Stainless steel seamless tubes EN 10216-5

Introduction of Steel Tube EN 10216-5 . Standard

Stainless steel seamless tubes to EN 10216-5 standard are tubes made from stainless steel materials that conform to the European standard EN 10216-5. This standard specifies the technical delivery conditions for seamless tubes made from austenitic and austenitic-ferritic stainless steels for use in high-temperature and high-pressure applications.

The stainless steel materials used in the manufacture of these tubes are chosen for their corrosion resistance, high temperature resistance, and strength. They are typically made from grades such as 1.4301 (304), 1.4401 (316), 1.4404 (316L), and 1.4462 (Duplex).

Stainless steel seamless tubes to EN 10216-5 standard are commonly used in industries such as petrochemical, chemical, and power generation, where they are used in applications such as heat exchangers, boilers, and pressure vessels. These tubes are known for their excellent corrosion resistance, which makes them ideal for use in environments where exposure to corrosive substances is common.

In summary, stainless steel seamless tubes to EN 10216-5 standard are high-quality tubes made from stainless steel materials that are designed to withstand high temperatures and pressures and offer excellent corrosion resistance.

Seamless steel tubes for pressure purposes: Stainless steel tubes
Foreword This document (EN 10216 -5:2004) has been prepared by Technical Committee ECISS/TC 29 "Steel tubes and fittings for steel tubes", the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2005, and conflicting national standards shall be withdrawn at the latest by March 2005. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the EU Directive 97/23/EC. For relationship with the EU Directive 97/23/EC, see informative Annex ZA, which is an integral part of this document. Other parts of EN 10216 are: Part 1: Non-alloy steel tubes with specified room temperature properties; Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties; Part 3: Alloy fine grain steel tubes; Part 4: Non-alloy and alloy steel tubes with specified low temperature properties. Another European Standard series covering tubes for pressure purposes is: — EN 10217: Welded steel tubes for pressure purposes – Technical delivery conditions.











1 Scope This document specifies the technical delivery conditions in two test categories for seamless tubes of circular cross section made of austenitic (including creep resisting steel) and austenitic- ferritic stainless steel which are applied for pressure and corrosion resisting purposes at room temperature, at low temperatures or at elevated temperatures.


2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. The requirements of this part of EN 10216 rule when they differ from those in the standards and documents referred to below: EN 10002-1, Metallic materials – Tensile testing – Part 1: Method of test at ambient temperature. EN 10002-5, Metallic materials – Tensile testing – Part 5: Method of test at elevated temperatures. EN 10020:2000, Definition and classification of grades of steel. EN 10021:1993, General technical delivery conditions for steel and iron products. EN 10027-1, Designation systems for steels – Part 1: Steel names, principal symbols. EN 10027-2, Designation systems for steels – Part 2: Numerical systems. EN 10028-7, Flat products made of steels for pressure purposes – Part 7: Stainless steels. EN 10045-1, Metallic materials – Charpy impact test – Part 1: Test method. EN 10052:1993, Vocabulary of heat treatment terms for ferrous products. EN 10088-1, Stainless steels – Part 1: List of stainless steels. EN 10204, Metallic products – Types of inspection documents. EN 10233, Metallic materials – Tubes – Flattening test. EN 10234, Metallic materials – Tubes – Drift expanding test. EN 10236, Metallic materials – Tubes – Ring expanding test. EN 10237, Metallic materials – Tubes – Ring tensile test. EN 10246-2, Non-destructive testing of steel tubes – Part 2: Automatic eddy current testing of seamless and welded (except submerged arc-welded) austenitic and ferritic-austenitic steel tubes for verification of hydraulic leak tightness. EN 10246-6, Non- destructive testing of steel tubes – Part 6: Automatic full peripheral ultrasonic testing of seamless steel tubes for the detection of transverse imperfections. EN 10246-7, Non-destructive testing of steel tubes – Part 7: Automatic full peripheral ultrasonic testing of seamless and welded (except submerged arc welded) steel tubes for the detection of longitudinal imperfections. EN 10246-17, Non-destructive testing of steel tubes – Part 17: Ultrasonic testing of tube ends of seamless and welded steel tubes for detection of laminar imperfections. SAGAWEB pour : EDF R&D EDF Branche Energies le EN 10256, Non-destructive testing of steel tubes – Qualification and competence of level 1 and level 2 non-destructive testing personnel. EN 10168, Steel products – Inspection documents – List of information and description. EN 10266:2003, Steel tubes, fittings and structural hollow sections – Symbols and definitions of terms for use in product standards. EN ISO 377, Steel and steel products – Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997). EN ISO 643, Steels – Micrographic determination of the apparent grain size (ISO 643:2003) EN ISO 1127, Stainless steel tubes – Dimensions, tolerances and conventional masses per unit length (ISO 1127:1992). EN ISO 2566-2, Steel – Conversion of elongation values – Part 2: Austenitic steels (ISO 2566-2:1984). EN ISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels – Part 2: Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels – Corrosion test in media containing sulfuric acid (ISO 3651.2:1998). EN ISO 14284, Steel and iron – Sampling and preparation of samples for the determination of the chemical composition (ISO 14284:1996). CR 10260, Designation systems for steel – Additional symbols. CR 10261, ECISS Information Circular 11 – Iron and steel – Review of available methods of chemical analysis.

































3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 10020:2000, EN 10021:1993, EN 10052:1993 and EN 10266:2003 together with the following apply. 3.1 test category classification that indicates the extent and level of inspection and testing 3.2 employer organization for which a person works on a regular basis NOTE The employer may be either the tube manufacturer or supplier or a third party organization providing Non-Destructive Testing (NDT) services






4 Symbols For the purposes of this document, the symbols given in EN 10266 and the following apply: TC test category NOTE See also Table 1 for symbols of the delivery condition. 5 Classification and designation 5.1 Classification According to the classification system in EN 10020, the steel grades are classified as: austenitic steels (corrosion resisting or creep resisting steels); austenitic-ferritic steels. For more details see EN 10088-1. 5.2 Designation For the tubes covered by this part of EN 10216 the steel designation consists of: number of this part of EN 10216 (EN 10216-5); plus either: steel name in accordance with EN 10027-1 and CR 10260; or: steel number allocated in accordance with EN 10027-2.






6 Information to be supplied by the purchaser 6.1 Mandatory information The following information shall be supplied by the purchaser at the time of enquiry and order: a) quantity (mass or total length or number); b) term "tube"; c) dimensions (outside diameter D and wall thickness T) (see 8.8.1); d) designation of the steel grade according to this part of EN 10216 (see 5.2); e) test category (see 9.3). 6.2 Options A number of options are specified in this part of EN 10216 and these are listed below. In the event that the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the tube shall be supplied in accordance with the basic specification (see 6.1). 1. Information about steelmaking process (see 7.1). 2. Delivery condition (see 7.2.4). 3. Specified range for sulphur content (see Table 2, footnote b). 4. Product analysis (see 8.2.2). 5. Additional mechanical tests on samples which have undergone a different or additional heat treatment (see 8.3.1). 6. Impact test at room temperature (see 8.3.1). 7. Agreed mechanical properties at room temperature for austenitic corrosion resisting steel tubes with wall thicknesses greater than 60 mm (see Table 6, footnote a). 8. Agreed mechanical properties at room temperature for austenitic creep resisting steel tubes with wall thicknesses greater than 50 mm (see Table 7, footnote a). 9. Verification of proof strength Rp0,2 or Rp1,0 at elevated temperatures (see 8.3.2.1). 10. Agreed proof strength values at elevated temperatures for austenitic corrosion resisting steel tubes with wall thicknesses greater than 60 mm (see Table 9, footnote a). 11. Impact test at low temperature (see 8.3.3). 12. Intergranular corrosion test (see 8.4). 13. Selection of leak-tightness test method (see 8.5.2.1). 14. Non-destructive testing for test category 2 tubes with specified outside diameter less than or equal to 101,6 mm and specified wall thickness less than or equal to 5,6 mm for detection of longitudinal imperfections (see 8.5.2.2). 15. Non-destructive testing for test category 2 tubes for detection of transverse imperfections (see 8.5.2.2). 16. Non-destructive testing for test category 2 tubes with specified wall thickness greater than 40 mm for detection of laminar imperfections at tube ends (see 8.5.2.2). 17. Special ends preparation (see 8.7). 18. Exact lengths (see 8.8.3). 19. Sized tube ends for tube of D > 219,1 mm (see Table 12). 20. Tolerance classes D 4 and T 4 for tubes ordered cold finished (see Table 13). 21. Type of inspection document other than the standard document (see 9.2.1). 22. Test pressure for hydrostatic leak-tightness test (see 11.6.1). 23. Wall thickness measurement away from the ends (see 11.7). 24. Additional marking (see 12.2). 25. Special protection (see 13). 6.3 Examples of an order 6.3.1 Example 1 2 000 m of hot finished descaled seamless tube with an outside diameter of 168,3 mm, a wall thickness of 4,5 mm, in accordance with this part of EN 10216, tolerance classes D 2 and T 2, made of steel grade X2CrNi19-11, to test category 1, with a 3.1.B inspection certificate in accordance with EN 10204: 2 000 m – HFD Tube – 168,3 X 4,5 – EN 10216-5 – X2CrNi19-11 – TC 1 6.3.2 Example 2 300 m of cold finished descaled seamless tube with an outside diameter of 42,4 mm, a wall thickness of 2,6 mm, in accordance with this part EN 10216, tolerance classes D 3 and T 3, made of steel grade 1.4301, to test category 2, with intergranular corrosion test (EN ISO 3651-2, method A), verification of proof strength at 300 °C, non-destructive testing for detection of longitudinal and transverse imperfections, with a 3.2 inspection certificate in accordance with EN 10204: 300 m – CFD Tube – 42,4 X 2,6 – EN 10216-5 – 1.4301 – TC 2 – Option 9: 300 °C – Option 12: A – Option 14 – Option 15 – Option 21: 3.2










































7 Manufacturing process 7.1 Steelmaking process The steelmaking process is at the discretion of the manufacturer, but see option 1. Option 1: The purchaser shall be informed about the steelmaking process used. The process shall be reported in the inspection document. 7.2 Tube manufacture and delivery conditions 7.2.1 All NDT activities shall be carried out by qualified and competent level 1, 2 and/or 3 personnel authorised to operate by the employer. The qualification shall be in accordance with EN 10256 or, at least, an equivalent to it. It is recommended that the level 3 personnel be certified in accordance to EN 473 or, at least an equivalent to it. The operating authorisation issued by the employer shall be in accordance with a written procedure. NDT operations shall be authorised by a level 3 NDT individual approved by the employer. NOTE The definition of level 1, 2 and 3 can be found in appropriate standards, e.g. EN 473 and EN 10256. 7.2.2 The tubes shall be manufactured by a seamless process, and may be hot finished or cold finished. The terms “ hot finished “ and “ cold finished “ apply to the condition of the tube before it is heat treated in accordance with 7.2.3. The process of manufacture is left to the discretion of the manufacturer, but see option 2. 7.2.3 The tubes shall be supplied in the solution annealed condition over their full length in either: reference heat treatment conditions; solution annealed conditions obtained directly by extrusion and subsequent cooling provided the mechanical properties, corrosion resistance and other properties are in accordance with this part of EN 10216. All specified mechanical properties shall be met even after a subsequent reference heat treatment. Solution treatment shall consist of heating the tubes uniformly to a temperature within the range given for the steel grade concerned in Tables 6, 7 and 8 and cooling rapidly. 7.2.4 The types of delivery condition of the tubes are given in Table 1. Unless option 2 is specified, the type of delivery condition is at the discretion of the manufacturer. Option 2: The delivery condition is specified by the purchaser.




















Table 1 — Delivery conditions a
Symbol ^b						Type of delivery condition									Surface condition
HFD						Hot finished heat treated, descaled									Metallically clean
CFD						Cold finished heat treated, descaled									Metallically clean
CFA						Cold finished bright annealed									Metallically bright
CFG						Cold finished heat treated, ground									Metallically bright-ground, the type and degree of roughness shall be agreed at the time of enquiry and order c
CFP						Cold finished heat treated, polished									Metallically bright-polished, the type and degree of roughness shall be agreed at the time of enquiry and order c
^aCombinations of the different conditions may be agreed at the time of enquiry and order. ^b The symbols are abbreviations for type of condition. Example: CFD = Cold Finished Descaled. ^c The enquiry and the order shall indicate whether the roughness requirement applies on the internal or external tube surface, or internal and external.


8 Requirements 8.1 General When supplied in a delivery condition indicated in 7.2.4 and inspected in accordance with clauses 9, 10 and 11, the tubes shall conform to the requirements of this part of EN 10216. In addition, the general technical delivery requirements specified in EN 10021 shall apply. 8.2 Chemical composition 8.2.1 Cast analysis The cast analysis reported by the steel manufacturer shall apply and conform to the requirements of Tables 2 or 3 for austenitic steels and of Table 4 for austenitic-ferritic steels. Option 3: (see Table 2). NOTE When welding tubes produced in accordance with this part of EN 10216, account should be taken to the fact that the behaviour of the steel during and after welding is dependent not only on the steel, but also on the applied heat treatment and the conditions of preparing for and carrying out the welding. 8.2.2 Product analysis Option 4: Product analysis for the tubes shall be supplied. Table 5 specifies the permissible deviation of the product analysis from the specified limits on cast analysis given in Tables 2, 3 and 4.











Table 2 — Chemical composition (cast analysis) a of austenitic corrosion resisting steels, in % by mass (continued)
Steel grade					C max	Si	Mn	P max	S max	N		Cr			Cu	Mo		Nb		Ni		Ti		Others
Steel name			Steel number
X2CrNi18-9			1.4307		0,030	≤ 1,00	≤ 2,00	0,040	0,015b	≤ 0,11		17,50 to 19,50			_	_		_		8,00 to 10,00c		_		_
X2CrNi19-11			1.4306		0,030	≤ 1,00	≤ 2,00	0,040	0,015b	≤ 0,11		18,00 to 20,00			_	_		_		10,00 to 12,00d		_		_
X2CrNiN18-10			1.4311		0,030	≤ 1,00	≤ 2,00	0,040	0,015	0,12 to 0,22		17,00 to 19,50			_	_		_		8,50 to 11,50		_		_
X5CrNi18-10			1.4301		0,07	≤ 1,00	≤ 2,00	0,040	0,015b	≤ 0,11		17,00 to 19,50			_	_		_		8,00 to 10,50		_		_
X6CrNiTi18-10			1.4541		0,08	≤ 1,00	≤ 2,00	0,040	0,015	_		17,00 to 19,00			_	_		_		9,00 to 12,00d		5xC to 0,70		_
X6CrNiNb18-10			1.455		0,08	≤ 1,00	≤ 2,00	0,040	0,015	_		17,00 to 19,00			_	_		10xC to 1,00		9,00 to 12,00d		_		_
X1CrNi25-21			1.4335		0,020	≤ 0,25	≤ 2,00	0,025	0,010	≤ 0,11		24,00 to 26,00			_	≤ 0,20		_		20,00 to 22,00		_		_
X2CrNiMo17-12-2			1.4404		0,030	≤ 1,00	≤ 2,00	0,040	0,015b	≤ 0,11		16,50 to 18,50			_	2,00 to 2,50		_		10,00 to 13,00e		_		_
X5CrNiMo17-12-2			1.4401		0,07	≤ 1,00	≤ 2,00	0,040	0,015b	≤ 0,11		16,50 to 18,50			_	2,00 to 2,50		_		10,00 to 13,00		_		_
X1CrNiMoN25-22-2			1.4466		0,020	≤ 0,70	≤ 2,00	0,025	0,010	0,10 to 0,16		24,00 to 26,00			_	2,00 to 2,50		_		21,00 to 23,00		_		_
X6CrNiMoTi17-12-2			1.4571		0,08	≤ 1,00	≤ 2,00	0,040	0,015b	_		16,50 to 18,50			_	2,00 to 2,50		_		10,50 to 13,50c		5xC to 0,70		_
X6CrNiMoNb17-12-2			1.458		0,08	≤ 1,00	≤ 2,00	0,040	0,015	_		16,50 to 18,50			_	2,00 to 2,50		10xC to 1,00		10,50 to 13,50		_		_
X2CrNiMoN17-13-3			1.4429		0,030	≤ 1,00	≤ 2,00	0,040	0,015	0,12 to 0,22		16,50 to 18,50			_	2,50 to 3,00		_		11,00 to 14,00d		_		_
X3CrNiMo17-13-3			1.4436		0,05	≤ 1,00	≤ 2,00	0,040	0,015b	≤ 0,11		16,50 to 18,50			_	2,50 to 3,00		_		10,50 to 13,00d		_		_
X2CrNiMo18-14-3			1.4435		0,030	≤ 1,00	≤ 2,00	0,040	0,015b	≤ 0,11		17,00 to 19,00			_	2,50 to 3,00		_		12,50 to 15,00		_		_
X2CrNiMoN17-13-5			1.4439		0,030	≤ 1,00	≤ 2,00	0,040	0,015	0,12 to 0,22		16,50 to 18,50			_	4,00 to 5,00		_		12,50 to 14,50		_		_
X1NiCrMoCu31-27-4			1.4563		0,020	≤ 0,70	≤ 2,00	0,030	0,010	≤ 0,11		26,00 to 28,00			0,70 to 1,50	3,00 to 4,00		_		30,00 to 32,00		_		_
X1NiCrMoCu25-20-5			1.4539		0,020	≤ 0,70	≤ 2,00	0,030	0,010	≤ 0,15		19,00 to 21,00			1,20 to 2,00	4,00 to 5,00		_		24,00 to 26,00		_		_
X1CrNiMoCuN20-18-7			1.4547		0,020	≤ 0,70	≤ 1,00	0,030	0,010	0,18 to 0,25		19,50 to 20,50			0,50 to 1,00	6,00 to 7.00		_		17.50 to 18,50		_		_
X1NiCrMoCuN25-20-7			1.4529		0,020	≤ 0,50	≤ 1,00	0,030	0,010	0,15 to 0,25		19,00 to 21,00			0,50 to 1,50	6,00 to 7,00		_		24,00 to 26,00		_		_
X2NiCrAlTi32-20			1.4558		0,030	≤ 0,70	≤ 1,00	0,020	0,015	_		20,00 to 23,00			_	_		_		32,00 to 35,00		8X(C+N) to 0,60		Al: 0,15 to 0,45
^a Elements not listed in this table shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropriate precautions are to be taken to avoid the addition of such elements from scrap and other materials used in production which would impair mechanical properties and the suitability of the steel. ^b For products to be machined a controlled sulphur content of 0,015 % to 0,030 % is permitted by agreement provided the resistance to corrosion is still satisfied for the intended purpose. Option 3: A sulphur content of 0,015 % to 0,030 % is specified. ^c Where for special reasons, e.g. hot workability it is necessary to minimize the deltaferrite content, or with the aim of low permeability, the maximum nickel content may be increased by 0,50 %. ^d Where for special reasons, e.g. hot workability it is necessary to minimize the deltaferrite content, or with the aim of low permeability, the maximum nickel content may be increased by 1,00 %. ^eWhere for special reasons, e.g. hot workability it is necessary to minimize the deltaferrite content, or with the aim of low permeability, the maximum nickel content may be increased by 1,50 %.





Table 3 – Chemical composition (cast analysis) a of austenitic creep resisting steels, in % by mass
Steel grade				C		Si		Mn		P max	S max	N		Cr		Cu	Mo	Nb		Ni		Ti		Others
Steel name		Steel number
X6CrNi18-10		1.4948		0,04 to 0,08		≤ 1,00		≤ 2,00		0,035	0,015	≤ 0,11		17,00 to 19,00		–	–	–		8,00 to 11,00		–		–
X7CrNiTi18-10		1.494		0,04 to 0,08		≤ 1,00		≤2,00		0,040	0,015	≤ 0,11		17,00 to 19,00		–	–	–		9,00 to13,00		5x(C+N)to 0,80
X7CrNiNb18-10		1.4912		0,04 to 0,1		≤ 1,00		≤ 2,00		0,040	0,015	≤ 0,11		17,00 to 19,00		–	–	10xC to 1,20		9,00 to 12,00
X6CrNiTiB18-10		1.4941		0,04 to 0,08		≤ 1,00		≤ 2,00		0,035	0,015	–		17,00 to 19,00		–	–	–		9,00 to12,00		5xC to0,80		B: 0,0015 to 0,0050
X6CrNiMo17-13-2		1.4918		0,04 to 0,08		≤ 0,75		≤ 2,00		0,035	0,015	≤ 0,11		16,00 to 18,00		–	2,00 to 2,50			12,00 to14,00		–		–
X5NiCrAlTi31-20 (+RA) ^b		1.4958(+RA)		0,03 to 0,08		≤ 0,70		≤ 1,50		0,015	0,010	–		19,00 to 22,00		≤ 0,50	–	≤ 0,10		30,00 to32,50		0,20 to0,50		Al: 0,20 to 0,50 Al+Ti: ≤ 0,70 Co: ≤ 0,5Ni+Co = 30,0 to 32,5


X8NiCrAlTi32-21		1.4959		0,05 to 0,10		≤ 0,70		≤ 1,50		0,015	0,010	–		19,00 to 22,00		≤ 0,50	–	–		30,00 to34,00		0,25 to 0,65		Al: 0,20 to 0,65
X3CrNiMoBN17-13-3		1.491		≤ 0,04		≤ 0, 75		≤ 2,00		0,035	0,015	0,10 to 0,18		16,00 to 18,00		–	2,00 to 3,00	–		12,00 to14,00		–		B: 0,0015 to 0,0050
X8CrNiNb16-13		1.4961		0,04 to 0,10		0,30 to 0,60		≤ 1,50		0,035	0,015	–		15,00 to 17,00		–	–	10xC to 1,20		12,00 to14,00		–		–
X8CrNiMoVNb16-13		1.4988		0,04 to 0,10		0,30 to 0,60		≤ 1,50		0,035	0,015	0,06 to 0,14		15,50 to 17,50		–	1,10 to 1,50	10xC to 1,20		12,50 to14,50		–		V: 0,60 to 0,85
X8CrNiMoNb16-16		1.4981		0,04 to 0,10		0,30 to 0,60		≤ 1,50		0,035	0,015	–		15,50 to 17,50		–	1,60 to 2,00	10xC to 1,20^c		15,50 to17,50		–		–
X10CrNiMoMnNbVB15-10-1		1.4982		0,06 to 0,15		0,20 to 1,00		5,50 to 7,00		0,035	0,015	–		14,00 to 16,00		–	0,80 to 1,20	0,75 to 1,25		9,00 to11,00		–		V: 0,15 to 0,40 B 0,003 to 0,009
^a Elements not listed in this table shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropriate precautions are to be taken to avoid the addition of such elements from scrap and other materials used in production which would impair mechanical properties and the suitability of the steel. ^b Recrystallizing annealed condition. ^cIncluding Ta.



Table 4 – Chemical composition (cast analysis) a of austenitic-ferritic steels, in % by mass
Steel grade					C		Si		Mn		Pmax	Smax		N		Cr		Cu		Mo		Ni		Others
Steel name		Steel number
X2CrNiMoN22-5-3		1.4462			0,030		≤ 1,00		≤ 2,00		0,035	0,015		0,10 to 0,22		21,00 to 23,00		_		2,50 to 3,50		4,50 to 6,50		_
X2CrNiMoSi18-5-3		1.4424			0,030		1,40 to 2,00		1,20 to 2,00		0,035	0,015		0,05 to 0,10		18,00 to 19,00		_		2,50 to 3,00		4,50 to 5,20		_
X2CrNiN23-4 b		1.4362			0,030		≤ 1,00		≤ 2,00		0,035	0,015		0,05 to 0,20		22,00 to 24,00		0,10 to 0,60		0,10 to 0,60		3,50 to 5,50		_
X2CrNiMoN25-7-4 b		1.441			0,030		≤ 1,00		≤ 2,00		0,035	0,015		0,20 to 0,35		24,00 to 26,00		_		3,00 to 4,50		6,00 to 8,00		_
X2CrNiMoCuN25-6-3		1.4507			0,030		≤ 0,70		≤ 2,00		0,035	0,015		0,15 to 0,30		24,00 to 26,00		1,00 to 2,50		2,70 to 4,00		5,50 to 7,50		_
X2CrNiMoCuWN25-7-4		1.4501			0,030		≤ 1,00		≤ 1,00		0,035	0,015		0,20 to 0,30		24,00 to 26,00		0,50 to 1,00		3,00 to4,00		6,00 to 8,00		W: 0,50 to 1,00
Table 5 – Permissible deviations of the product analysis from specified limits on cast analysis given in Tables 2, 3 and 4
Element							Limiting value for the cast analysis according to Tables 2, 3 and 4 % by mass										Permissible deviation of the product analysis a % by mass
Carbon							≤ 0,030										+ 0,005
							> 0,030 ≤ 0,15										± 0,01
Silicon							≤ 2,00										± 0,05
Manganese							≤ 1,00										+ 0,03
							> 1,00 ≤ 2,00										± 0,04
							> 2,00 ≤ 7,00										± 0,10
Phosphorus							≤ 0,030										+ 0,003
							> 0,030 ≤ 0,040										+ 0,005
Sulphur							≤ 0,015										+ 0,003
							> 0,015 ≤ 0,030										+0,005
Nitrogen							≤ 0,35										± 0,01
Aluminium							≤ 0,65										± 0,10
Boron							≥0,001 5 ≤ 0,009 0										± 0,0003
Chromium							> 14,00 ≤ 20,00										± 0,20
							>20,00 ≤ 28,00										± 0,25
Cobalt							≤ 0,50										+ 0,10
Copper							≤ 1,00										± 0,07
							> 1,00 ≤ 2,50										± 0,10
Molybdenum							≤ 0,60										± 0,03
							> 0,60 ≤ 1,75										± 0,05
							> 1,75 ≤ 7,00										± 0,10
Niobium							≤ 1,25										± 0,05
Nickel							> 3,50 ≤ 5,00										± 0,07
							> 5,00 ≤ 10,00										± 0,10
							> 10,00 ≤ 20,00										± 0,15
							>20,00 ≤35,00										± 0,20
Titanium							≤ 0,80										± 0,05
Vanadium							≤ 0,85										± 0,03
Tungsten							≤ 1,00										± 0,05
^a If several product analyses are carried out on one cast, and the contents of an individual element determined lie outside the permissible range of the chemical composition specified for the cast analysis, then it is only allowed to exceed the permissible maximum value or to fall short of the permissible minimum value, but not both for one cast.

8.3 Mechanical properties 8.3.1 At room temperature The mechanical properties of the tubes at room temperature shall conform to the relevant requirements in Tables 6, 7 and 8 and in clause 11. If heat treatments different from, or additional to, the reference heat treatment are to be carried out after the delivery of the tubes, the purchaser may request, at the time of enquiry and order, additional mechanical tests on samples, that have been given heat treatments different from or additional to, those given in Tables 6, 7 and 8. The heat treatment of the samples and the mechanical properties to be obtained from tests on them shall be agreed between the purchaser and the manufacturer at the time of enquiry and order. Option 5: Additional mechanical tests on samples which have undergone a different or additional heat treatment shall be carried out. Option 6: Impact test shall be carried out at room temperature (see Tables 6, 7 and 8). Option 7: (see Table 6, footnote a). Option 8: (see Table 7, footnote a). 8.3.2 At elevated temperature 8.3.2.1 Proof strength The minimum proof strength Rp0,2 and Rp1,0 values at elevated temperatures are specified in Tables 9, 10 and 11. Option 9: Proof strength Rp0,2 or Rp1,0 (for austenitic-ferritic steels in Table 11 only Rp0,2 apply) shall be verified. The test temperature shall be agreed at the time of enquiry and order. Option 10: (see Table 9, footnote a). 8.3.2.2 Creep rupture strength Annex A gives mean values as preliminary data about creep rupture strength. NOTE Steel grades not mentioned in Table A.1 are not intended for use in the creep range. 8.3.3 At low temperature Impact energy values at specified low temperature shall conform to the requirements in Tables 6 and 8. Option 11: Impact test at low temperature shall be carried out.



















Table 6 – Mechanical properties for wall thicknesses up to 60 mm a of austenitic corrosion resisting steels in the solution annealed condition (+AT) and information about intergranular corrosion (continued) b
Steel grade					Tensile properties at room temperature ^c					Impact properties^c							Reference heat treatment conditions					Resistance to intergranular corrosion
					Proof strength					Minimum average absorbed energy KVJ
					Rp0,2 min	Rp1,0 min	Tensile strength Rm			Elongation A min (%)		at RT			at -196°C		Solution temperature d °C			Cooling in^e		f		Method in EN ISO 3651-2
Steel name			Steel number		MPa	MPa	MPa			l	t	l	t		t
X2CrNi18-9			1.4307		180	215	460 to 680			40	35	100	60		60		1 000 to 1 100			w, a		yes		A
X2CrNi19-11			1.4306		180	215	460 to 680			40	35	100	60		60		1 000 to 1 100			w, a		yes		A
X2CrNiN18-10			1.4311		270	305	550 to 760			35	30	100	60		60		1 000 to 1 100			w, a		yes		A
X5CrNi18-10			1.4301		195	230	500 to 700			40	35	100	60		60		1 000 to 1 100			w, a		yes g		A
X6CrNiTi18-10 (cold finish)			1.4541		200	235	500 to 730			35	30	100	60		60		1 020 to 1 120			w, a		yes		A
X6CrNiTi18-10 (hot finish)			1.4541		180	215	460 to 680			35	30	100	60		60		1 020 to 1 120			w, a		yes		A
X6CrNiNb18-10			1.455		205	240	510 to 740			35	30	100	60		60		1 020 to 1 120			w, a		yes		A
X1CrNi25-21			1.4335		180	210	470 to 670			45	40	100	60		60		1 030 to 1 110			w, a		yes		A
X2CrNiMo17-12-2			1.4404		190	225	490 to 690			40	30	100	60		60		1 020 to 1 120			w, a		yes		A
X5CrNiMo17-12-2			1.4401		205	240	510 to 710			40	30	100	60		60		1 020 to 1 120			w, a		yes g		A
X1CrNiMoN25-22-2			1.4466		260	295	540 to 740			40	30	100	60		60		1 070 to 1 150			w, a		yes		A or B
X6CrNiMoTi17-12-2 (cold finish)			1.4571		210	245	500 to 730			35	30	100	60		–		1 020 to 1 120			w, a		yes		A
X6CrNiMoTi17-12-2 (hot finish)			1.4571		190	225	490 to 690			35	30	100	60		60		1 020 to 1 120			w, a		yes		A
X6CrNiMoNb17-12-2			1.458		215	250	510 to 740			35	30	100	60		–		1 020 to 1 120			w, a		yes		A
X2CrNiMoN17-13-3			1.4429		295	330	580 to 800			35	30	100	60		60		1 020 to 1 120			w, a		yes		A
X3CrNiMo17-13-3			1.4436		205	240	510 to 710			40	30	100	60		60		1 020 to 1 120			w, a		yes g		A
X2CrNiMo18-14-3			1.4435		190	225	490 to 690			40	30	100	60		60		1 020 to 1 120			w, a		yes		A
X2CrNiMoN17-13-5			1.4439		285	315	580 to 800			35	30	100	60		60		1 060 to 1 140			w, a		yes		A
X1NiCrMoCu31-27-4			1.4563		215	245	500 to 750			40	35	120	90		60		1 070 to 1 150			w, a		yes		B or C
X1NiCrMoCu25-20-5			1.4539		230	250	520 to 720			35	30	120	90		60		1 060 to 1 140			w, a		yes		C
X1CrNiMoCuN20-18-7			1.4547		300	340	650 to 850			35	30	100	60		60		1 140 to 1 200			w, a		yes		C
X1NiCrMoCuN25-20-7			1.4529		270	310	600 to 800			35	30	100	60		60		1 120 to 1 180			w, a		yes		C
X2NiCrAlTi32-20			1.4558		180	210	450 to 700			35	30	120	90		60		950 to 1 050			w, a		yes		A
^a For wall thicknesses greater than 60 mm the mechanical properties are subject to agreement at the time of enquiry and order. Option 7: Agreed mechanical properties for wall thicknesses greater than 60 mm apply. ^b Inspection and testing to be carried out are summarised in Table 15. ^c l = longitudinal; t = transverse. ^dThe maximum temperatures are for guidance only. e w = water; a = air; cooling sufficiently rapid. ^f When tested according to EN ISO 3651-2 (Appropriate method, A or B or C, as indicated) up to the limit temperatures indicated in the last column of Table 9. ^g In delivery condition. (Normally not fulfilled in the sensitized condition).








Table 7 – Mechanical properties for wall thicknesses up to 50 mm a of austenitic creep resisting steels in the solution annealed condition (+AT) and information about intergranular corrosion b
Steel grade						Tensile properties at room temperature c								Impact properties at room temperature c		Reference heat treatment conditions						Resistance to intergranular corrosion
						Proof strength		Tensile strength Rm			Elongation A min (%)			Minimum average absorbed energy KVJ		Solution temperature d °C			Cooling in ^e			f	Method in EN ISO 3651-2
						Rp0,2min	Rp1,0min
Steel name			Steel number			MPa	MPa	MPa				l	t	l	t
X6CrNi18-10			1.4948			185	225		500 to 700			40	30	100	60		1 000 to 1 080		w, a			no	A
X7CrNiTi18-10			1.494			190	220		510 to 710			35	30	100	60		1 100 to 1 150		w, a			no	A
X7CrNiNb18-10			1.4912			205	240		510 to 710			40	30	100	60		1 070 to 1 125		w, a			no	A
X6CrNiTiB18-10			1.4941			195	235		490 to 680			35	30	100	60		1 070 to 1 150		w, a			no	A
X6CrNiMo17-13-2			1.4918			205	245		490 to 690			35	30	100	60		1 020 to 1 100		w, a			no	A
X5NiCrAlTi31-20			1.4958			170	200		500 to 750			35	30	120	80		1 150 to 1 200		w, a			no	A
X5NiCrAlTi31-20 + RA			1.4958+RA			210	240		500 to 750			35	30	120	80		920 to 1 000 g		w,a			no	A
X8NiCrAlTi32-21			1.4959			170	200		500 to 750			35	30	120	80		1 150 to 1 200 h		w, a			no	A
X3CrNiMoBN17-13-3			1.491			260	300		550 to 750			35	30	120	80		1 020 to 1 100		w, a			no	A
X8CrNiNb16-13			1.4961			205	245		510 to 690			35	22	100	60		1 050 to 1 100		w, a			no	A
X8CrNiMoVNb16-13			1.4988			255	295		540 to 740			30	20	60	40		1 100 to 1 150 i		w, a			no	A
X8CrNiMoNb16-16			1.4981			215	255		530 to 690			35	22	100	60		1 050 to 1 100		w,a			no	A
X10CrNiMoMnNbVB15-10-1			1.4982			220	270		540 to 740			35	30	100	60		1 050 to 1 150		w, a			no	A
^a For wall thicknesses greater than 50 mm the mechanical properties are subject to agreement at the time of enquiry and order. Option 8: Agreed mechanical properties for wall thicknesses greater than 50 mm apply. ^b Inspection and testing to be carried out are summarised in Table 15. ^c l = longitudinal; t = transverse. ^dThe maximum temperatures are for guidance only. ^ew = water; a = air; cooling sufficiently rapid. ^fWhen tested according to EN ISO 3651-2 (Appropriate method, A or B or C, as indicated) up to the limit temperatures indicated in the last column of Table 10. ^gAfter solution annealing the grain size shall be 1 to 5 according to EN ISO 643. ^h After solution annealing the grain size according to EN ISO 643 shall be 1 to 5 for cold worked tube and 5 or coarser for hot extruded tube.









Table 8 – Mechanical properties for wall thicknesses up to 30 mm of austenitic-ferritic steels in the solution annealed condition (+AT) and information about intergranular corrosion^a
Steel grade				Tensile properties at room temperature b								Impact properties ^b					Reference heat treatment conditions						Resistance to intergranular corrosion
				Proof strength Rp0,2 min.		Tensile strength Rm			Elongation A min (%)			Minimum average absorbed energy KVJ					Solution temperature c			Cooling in d			e	Method in EN ISO 3651-2
												at RT			at -40 °C
Steel name		Steel number		MPa		MPa			l		t	l	t		t
X2CrNiMoN22-5-3		1.4462		450		640 to 880 f			22		22	120	90		40		1 020 to 1 100			w, a			yes	B
X2CrNiMoSi18-5-3		1.4424		480		700 to 900			30		30	120	80		–		975 to 1 050			w, a			yes	A
X2CrNiN23-4		1.4362		400		600 to 820			25		25	120	90		40		950 to 1 050			w, a			yes	A
X2CrNiMoN25-7-4		1.441		550		800 to 1000			20		20	100	100		40		1 040 to 1 120			w, a			yes	B or C
X2CrNiMoCuN25-6-3		1.4507		500		700 to 900			20		20	100	100		40		1 040 to 1 120			w			yes	B
X2CrNiMoCuWN 25-7-4		1.4501		550		800 to 1 000			20		20	100	100		40		1 040 to 1 120			w			yes	B or C
^a Inspection and testing to be carried out are summarised in Table 15. ^b l = longitudinal; t = transverse. ^cThe maximum temperatures are for guidance only. ^d w = water; a = air; cooling sufficiently rapid. ^e When tested according to EN ISO 3651-2 (Appropriate method, A or B or C, as indicated) up to the limit temperatures indicated in the last column of Table 11. ^f For cold finished and solution annealed tubes the maximum tensile strength is 920 MPa.






Table 9 – Minimum proof strength Rp0,2 and Rp1,0 at elevated temperatures for wall thicknesses up to 60 mm a of austenitic corrosion resisting steels in the solution annealed condition (+AT) and guideline for the limit temperature for intergranular corrosion (continued)
Steel grade	Rp0,2 , min Mpa at a temperature (°C) of												Rp1,0 , min Mpa at a temperature (°C) of											Limit temp.b °C

Steel name	Steel number	50	100	150	200	250	300	350	400	450	500	550	50	100	150	200	250	300	350	400	450	500	550
X2CrNi18-9	1.4307	165	145	130	118	108	100	94	89	85	81	80	200	180	160	145	135	127	121	116	112	109	108	350
X2CrNi19-11	1.4306	165	145	130	118	108	100	94	89	85	81	80	200	180	160	145	135	127	121	116	112	109	108	350
X2CrNiN18-10	1.4311	255	205	175	157	145	136	130	125	121	119	118	282	240	210	187	175	167	160	156	152	149	147	400
X5CrNi18-10	1.4301	180	155	140	127	118	110	104	98	95	92	90	218	190	170	155	145	135	129	125	122	120	120	300
X6CrNiTi18-10 (cold finish.) (hot finish.)	1.4541	190	176	167	157	147	136	130	125	121	119	118	222	208	195	185	175	167	161	156	152	149	147	400
	1.4541	162	147	132	118	108	100	94	89	85	81	80	201	181	162	147	137	127	121	116	112	109	108	400
X6CrNiNb18-10	1.455	195	175	165	155	145	136	130	125	121	119	118	232	210	195	185	175	167	161	156	152	149	147	400
X1CrNi25-21	1.4335	170	150	140	130	120	115	110	105	–	–	–	200	180	170	160	150	140	135	130	–	–	–	400
X2CrNiMo17-12-2	1.4404	182	165	150	137	127	119	113	108	103	100	98	217	200	180	165	153	145	139	135	130	128	127	400
X5CrNiMo17-12-2	1.4401	196	175	158	145	135	127	120	115	112	110	108	230	210	190	175	165	155	150	145	141	139	137	300
X1CrNiMoN25-22-2	1.4466	230	195	170	160	150	140	135	–	–	–	–	262	225	205	190	180	170	165	–	–	–	–	400
X6CrNiMoTi17-12-2 (cold fin.) (hot fin.)	1.4571	202	185	177	167	157	145	140	135	131	129	127	234	208	195	185	175	167	161	156	152	149	147	400
	1.4571	182	166	152	137	127	118	113	108	103	100	98	201	181	162	147	137	127	121	116	112	109	108	400
X6CrNiMoNb17-12-2	1.458	202	186	177	167	157	145	140	135	131	129	127	240	221	206	196	186	175	169	164	160	158	157	400
X2CrNiMoN17-13-3	1.4429	255	215	195	175	165	155	150	145	140	138	136	290	245	225	205	195	185	180	175	170	168	166	400
X3CrNiMo17-13-3	1.4436	195	175	158	145	135	127	120	115	112	110	108	228	210	190	175	165	155	150	145	141	139	137	300
X2CrNiMo18-14-3	1.4435	180	165	150	137	127	119	113	108	103	100	98	217	200	180	165	153	145	139	135	130	128	127	400
X2CrNiMoN17-13-5	1.4439	260	225	200	185	175	165	155	150	–	–	–	290	255	230	210	200	190	180	175	–	–	–	400
X1NiCrMoCu31-27-4	1.4563	210	190	175	160	155	150	145	135	125	120	115	240	220	205	190	185	180	175	165	155	150	146	550
X1NiCrMoCu25-20-5	1.4539	221	205	190	175	160	145	135	125	115	110	105	244	235	220	205	190	175	165	155	145	140	135	400
X1CrNiMoCuN20-18-7	1.4547	267	230	205	190	180	170	165	160	153	148	–	306	270	245	225	212	200	195	190	184	180	–	400
X1NiCrMoCuN25-20-7	1.4529	254	230	210	190	180	170	165	160	–	–	–	296	270	245	225	215	205	195	190	–	–	–	400
X2NiCrAlTi32-20	1.4558	168	155	145	140	135	130	125	120	110	100	90	198	185	175	170	165	160	155	150	140	130	120	400
Table 10 – Minimum proof strength Rp0,2 and Rp1,0 at elevated temperatures for wall thicknesses up to 50 mm of austenitic creep resisting steels in the solution annealed condition (+AT) and guideline for the limit temperature for intergranular corrosion
Steel grade		Rp0,2 , min Mpa Temperature (°C)											Rp1,0 , min Mpa Temperature (°C)											Limit temp. a °C
Steel name	Steel number	50	100	150	200	250	300	350	400	450	500	550	50	100	150	200	250	300	350	400	450	500	550
X6CrNi18-10	1.4948	174	157	142	127	117	108	103	98	93	88	83	201	191	172	157	147	137	132	127	122	118	113	400
X7CrNiTi18-10	1.494	172	156	145	135	128	124	120	116	113	111	109	207	191	179	170	163	159	155	151	148	146	144	400
X7CrNiNb18-10	1.4912	190	171	162	153	147	139	133	129	–	124	–	225	204	192	182	172	166	162	159	–	155	–
X6CrNiTiB18-10	1.4941	180	162	152	142	137	132	127	123	118	113	108	219	201	191	181	176	172	167	162	157	152	147	400
X6CrNiMo17-13-2	1.4918	184	177	162	147	137	127	122	118	113	108	103	228	211	194	177	167	157	152	147	142	137	132	400
X5NiCrAlTi31-20	1.4958	157	140	127	115	105	95	90	85	82	80	75	180	160	147	135	125	115	110	105	102	100	95	400
X5NiCrAlTi31-20 +RA	1.4958+RA	195	180	170	160	152	145	137	130	125	120	115	225	205	193	180	172	165	160	155	150	145	140	400
X8NiCrAlTi32-21	1.4959	157	140	127	115	105	95	90	85	82	80	75	180	160	147	135	125	115	110	105	102	100	95	400
X3CrNiMoBN17-13-3	1.491	234	205	187	170	159	148	141	134	130	127	124	273	240	220	200	189	178	171	164	160	157	154	400
X8CrNiNb16-13	1.4961	197	175	166	157	147	137	132	128	123	118	118	231	205	195	186	176	167	162	157	152	147	147	400
X8CrNiMoVNb16-13	1.4988	239	215		196		177		167		157	152	273	245		226		206		196		186	181	400
X8CrNiMoNb16-16	1.4981	202	195		177		157		147		137	137	242	225		206		186		177		167	167	400
X10CrNiMoMnNbVB15-10-1	1.4982	213	188	171	161	153	148	145	144	141	139	136	254	232	210	195	190	187	184	182	179	178	175	400
^aUp to these temperatures, the material should, within 100 000 h, not have changed so as to show susceptibility to intergranular corrosion, when tested in conformity with EN ISO 3651-2. See also Table 7.
Table 11 – Minimum proof strength Rp0,2 at elevated temperatures for wall thicknesses up to 30 mm of austenitic-ferritic steels in the solution annealed (+AT) condition and guideline for the limit temperature for intergranular corrosion
Steel grade				Rp0,2 min Mpa Temperature °C
Steel name	Steel number			50				100					150				200				250 ^a
X2CrNiMoN22-5-3	1.4462			415				360					335				310				295
X2CrNiMoSi18-5-3	1.4424			430				370					350				330				325
X2CrNiN23-4	1.4362			370				330					310				290				280
X2CrNiMoN25-7-4	1.441			530				480					445				420				405
X2CrNiMoCuN25-6-3	1.4507			485				450					420				400				380
X2CrNiMoCuWN25-7-4	1.4501			502				450					420				400				380
8.4 Corrosion resistance The information given in Tables 6, 7 and 8 refer to the resistance of the steels to intergranular corrosion when tested in accordance with EN ISO 3651-2 to the indicated method A or B or C. Guideline values for the limit temperature for susceptibility to intergranular corrosion are indicated in Tables 9, 10 and 11. Option 12: A test for the resistance to intergranular corrosion shall be carried out. If other specific corrosion tests are required, they shall be agreed at the time of enquiry and order. 8.5 Appearance and soundness 8.5.1 Appearance 8.5.1.1 The tubes shall be free from external and internal surface defects that can be detected by visual examination. 8.5.1.2 The internal and external surface finish of the tubes shall be typical of the manufacturing process and, where applicable, the heat treatment employed. Normally the finish and surface condition shall be such that any surface imperfections requiring dressing can be identified. 8.5.1.3 It shall be permissible to dress, only by grinding or machining, surface imperfections provided that, after doing so, the wall thickness in the dressed area is not less than the specified minimum wall thickness. All dressed areas shall blend smoothly into the contour of the tube. 8.5.1.4 Surface imperfections which encroach on the specified minimum wall thickness shall be considered defects and tubes containing these shall be deemed not to conform to this part of EN 10216. 8.5.2 Soundness 8.5.2.1 Leak-tightness The tubes shall pass a hydrostatic test (see 11.6.1) or an eddy current test (see 11.6.2) for leak-tightness. Unless option 13 is specified, the choice of the test method is at the discretion of the manufacturer. Option 13: The test method for verification of leak-tightness according to 11.6.1 or 11.6.2 is specified by the purchaser. 8.5.2.2 Non-destructive testing The tubes of test category 2 with outside diameter greater than 101,6 mm or wall thickness greater than 5,6 mm shall be submitted to a non-destructive testing for the detection of longitudinal imperfections, according to 11.9.1. Option 14: The tubes of test category 2 with specified outside diameter less than or equal to 101,6 mm and specified wall thickness less than or equal to 5,6 mm shall be submitted to a non-destructive testing for the detection of longitudinal imperfections according to 11.9.1. Option 15: The tubes of test category 2 shall be submitted to a non-destructive testing for the detection of transverse imperfections according to 11.9.2. Option 16: The tubes of test category 2 with specified wall thickness greater than 40 mm shall be submitted to a non-destructive testing for the detection of the laminar imperfections at the tube ends according to 11.9.3. 8.6 Straightness The deviation from straightness of any tube length L shall not exceed 0,001 5 L. Deviations from straightness over any one meter length shall not exceed 3 mm. 8.7 Preparation of ends Tubes shall be delivered with square cut ends. The ends shall be free from excessive burrs. Option17: Tubes with wall thickness T ≥ 3,2 mm shall be delivered with bevelled ends (see Figure 1). The bevel shall have an angle α of 30° +5° with a root face C of 1,6 mm ± 0,8 mm, except that for wall thickness T greater than 20 mm, an agreed alternative bevel may be specified. 8.8 Dimensions, masses and tolerances 8.8.1 Outside diameter and wall thickness Tubes shall be ordered by outside diameter D and wall thickness T. Preferred outside diameters D and wall thicknesses T are given in EN ISO 1127. 8.8.2 Mass For the calculation of mass per unit length the density values given in EN 10088-1, Table A.1 to Table A.4 and EN 10028-7, Table A.1 shall be used. 8.8.3 Lengths Unless option 18 is specified, the tubes shall be delivered in random lengths. The delivery range shall be agreed at the time of enquiry and order. Option 18: The tubes shall be delivered in exact lengths and the length shall be specified at the time of enquiry and order. The tolerances on these lengths shall conform to 8.8.4.2. 8.8.4 Tolerances 8.8.4.1 Tolerances on outside diameter and wall thickness The diameter and the wall thickness of the tubes shall be within the relevant tolerance limits given in Table 12 for hot finished tubes and in Table 13 for cold finished tubes. Tolerance classes T1 to T4 and D1 to D4 were taken from EN ISO 1127. Out of roundness is included in the tolerances on diameter and eccentricity is included in the tolerances on wall thickness.


































Table 12 – Tolerances on outside diameter D and wall thickness T for tubes ordered hot finished
Outside diameter D		Tolerances on D										Tolerances on T
mm		Tolerance class				Permissible deviation						Tolerance class				Permissible deviation
30 ≤ D ≤ 219,1		D 2				± 1,0 % or ± 0,5 mm whichever is the greater						T 1				± 15 % or ± 0,6 mm whichever is the greater ^b
												T 2				± 12,5 % or ± 0,4 mm whichever is the greater
219,1 < D ≤ 610		D 1				±1,5 % or ± 0,75 mm whichever is the greater^a										+ 22,5 % − 15 % c
												T 1				± 15% or ± 0,6 mm whichever is the greater ^d
												T 2				± 12,5% or ± 0,4 mm whichever is the greater^e
^a Option 19: The tubes shall be ordered with sized ends. In this case a permissible deviation of the outside diameter of 0,6 % applied to the tube ends over a length of approx. 100 mm. ^bApplies to tubes with wall thickness T ≤ 0,01 D and T ≤ 4 mm. ^c Applies to tubes with wall thickness T ≤ 0,05 D. ^dApplies to tubes with wall thickness T: 0,05 D < T ≤ 0,09 D. ^e Applies to tubes with wall thickness T > 0,09 D.




Table 13 – Tolerances on outside diameter D and wall thickness T for tubes ordered cold finished
Tolerances on D ≤ 219,1 mm											Tolerances on T
Tolerance class				Permissible deviation							Tolerance class							Permissible deviation
D 3				± 0,75 % or ± 0,3 mm whichever is the greater							T 3							± 10 % or ± 0,2 mm whichever is the greater
D 4^a				± 0,5 % or ± 0,1 mm whichever is the greater							T 4 ^a							± 7,5 % or ± 0,15 mm whichever is the greater
^aOption 20: Tolerance classes D 4 and T 4 is specified for tubes ordered cold finished
8.8.4.2 Tolerance on exact lengths The tolerances for exact lengths shall be as given in Table 14.

Table 14 – Tolerances on exact lengths
Dimensions in mm
Length L												Tolerance on exact length
L≤6000												+5 0
6000<L≤12000												+10 0
L>12000												+ by agreement 0
9 Inspection 9.1 Type of inspection Conformity to the requirements of the order, for tubes according to this part of EN 10216, shall be verified by specific inspection. When an inspection document 3.1.B is specified the material manufacturer shall state in the confirmation of the order whether he is operating according to a “quality-assurance system”, certified by a competent Body established within the Community, and whether he has undergone a specific assessment for materials. NOTE See the EU Directive 97/23/EC Annex I section 4.3 third paragraph. 9.2 Inspection documents 9.2.1 Types of inspection documents Unless option 21 is specified, an inspection certificate 3.1.B, according to EN 10204, shall be issued. Option 21: One of the inspection documents 3.1.C or 3.2 according to EN 10204 shall be issued. If an inspection document 3.1.C or 3.2 is specified, the purchaser shall notify the manufacturer of the name and address of the organisation or person who is to carry out the inspection and produce the inspection document. In the case of the inspection report 3.2 it shall be agreed which party shall issue the certificate. NOTE Document 3.1.A is not acceptable for compliance with the EU Directive 97/23/EC. 9.2.2 Content of inspection documents The content of the inspection document shall be according to EN 10168. In all types of inspection documents a statement on the conformity of the products delivered with the requirements of this specification and the order shall be included. The inspection certificate or inspection report shall contain the following codes and information: A commercial transactions and parties involved; B description of products to which the inspection document applies; C02-C03 direction of the test pieces and testing temperature; C10-C13 tensile test; C40-C43 impact test, if applicable; C60-C69 other tests (e.g. flattening); C71-C92 chemical composition on cast analysis (product analysis if applicable); D01 marking and identification, surface appearance, shape and dimensional properties; D02-D99 leak-tightness test, NDT, material identification; Z validation. In addition for inspection document 3.1.B the manufacturer shall state the references to the certificate (see 9.1) of the appropriate "quality-assurance system", if applicable. 9.3 Summary of inspection and testing The tubes shall be inspected and tested in accordance with test category 1 or test category 2 as specified at the time of enquiry and order (see 6.1). Inspection and testing to be carried out are summarised in Table 15.
























10 Sampling 10.1 Test unit For heat treated tubes, a test unit shall comprise tubes of the same specified diameter and wall thickness, the same steel grade, the same cast, the same manufacturing process, subjected to the same finishing treatment in a continuous furnace or heat treated in the same furnace charge in a batch-type furnace. For extruded tubes, a test unit shall comprise tubes of the same specified diameter and wall thickness, the same steel grade, the same cast, the same manufacturing process. The number of tubes, in random manufacturing lengths1)) per test unit shall be max 100. 1) The random manufacturing lengths may differ from the delivery length (see 8.8.3).





Table 15 – Summary of inspection and testing
Type of inspection and test								Frequency of testing										Refer to				Testing standard
								Test category 1					Test category 2
Mandatory tests	Cast analysis							one per cast					one per cast					11.1
	Tensile test at room temperature							one per test unit					two per test unit					11.2.1				EN 10002-1
	Flattening test ^a or							one per test unit					10 % per test unit (at least one per test unit)					11.3.1				EN 10233
	Ring tensile test ^a or																	11.3.2				EN 10237
	Drift expanding test ^a or																	11.3.3				EN 10234
	Ring expanding test ^a																	11.3.4				EN 10236
	Leak tightness test							each tube										11.6				EN 10246-2
	Dimensional inspection																	11.7
	Visual examination																	11.8
	NDT for the detection of longitudinal imperfections for D >101,6 mm or T > 5,6 mm							–										11.9				EN 10246-7
	Material identification							each tube										11.10
Optional tests	Product analysis (option 4)							one per cast					one per cast					11.1
	Tensile test at elevated temperature (option 9)							as agreed upon or one per cast and same heat treatment condition					as agreed upon or one per cast and same heat treatment condition					11.2.2				EN 10002-5
	Impact test at room temperature (option 6)																	11.4				EN 10045-1
	Impact test at low temperature (option 11)																	11.4				EN 10045-1
	Intergranular corrosion test (option 12)																	11.5				EN ISO 3651-2
	Wall thickness measurement away from tube ends (option 23)							each tube					each tube					11.7
	NDT for the detection of longitudinal imperfections for D ≤ 101,6 mm and T ≤5,6 mm (option 14)							–										11.9				EN 10246-7
	NDT for the detection of transverse imperfections (option 15)							–										11.9				EN 10246-6
	NDT for the detection of laminar imperfections at tubes ends for T > 40 mm. (option 16)							–										11.9				EN 10246-17
^aTesting method is at the manufacturer’s discretion in accordance with Table 16.
10.2 Preparation of samples and test pieces 10.2.1 Selection and preparation of samples for product analysis Samples for product analysis shall be taken from the test pieces or samples for mechanical testing or from the whole thickness of the tube at the same location as for the mechanical test samples, according to EN ISO 14284. 10.2.2 Location, orientation and preparation of samples and test pieces for mechanical tests 10.2.2.1 General Samples and test pieces shall be taken at the tube ends and according to the requirements of EN ISO 377. 10.2.2.2 Test pieces for tensile test The test pieces for tensile tests at room temperature shall be prepared according to EN 10002-1. The test pieces for tensile tests at elevated temperature shall be prepared according to EN 10002-5. At the manufacturer's discretion: for tubes with an outside diameter D ≤ 219,1 mm the test piece shall be either a full tube section or a strip section or a machined circular cross section (T > 10 mm) and shall be taken in a direction either transverse, where possible, or longitudinal to the axis of the tube; for tubes with an outside diameter D > 219,1 mm, the test piece shall either be a machined circular cross section (T > 10 mm) from an unflattened sample or a strip section and be taken in a direction either transverse, where possible, or longitudinal to the axis of the tube. 10.2.2.3 Test pieces for flattening, ring tensile, drift expanding and ring expanding tests The test pieces for the flattening, ring tensile, drift expanding and ring expanding tests shall consist of a full tube section according to EN 10233, EN 10237, EN 10234 or EN 10236 respectively. 10.2.2.4 Test pieces for impact test Three standard Charpy V-notch test pieces shall be prepared according to EN 10045-1. If the nominal product thickness is such that standard test pieces cannot be produced without flattening of the section, then the test pieces of width less than 10 mm, but not less than 5 mm shall be prepared; the largest obtainable width shall be used. Where test pieces of at least 5 mm width cannot be obtained, the tubes shall not be subjected to impact testing. The test pieces shall be taken transverse to the tube axis unless Dmin, as calculated by the following equation, is greater than the specified outside diameter, in which case longitudinal test pieces shall be used: Dmin = (T-5) + [756,25 / (T-5)] The test pieces shall be prepared such that the axis of the notch is perpendicular to the surface of the tube, see Figure 2. 1 Longitudinal test piece 2 Transverse test piece Notch oriented perpendicular to tube axis Figure 2 — Impact test piece orientation 10.2.2.5 Test pieces for intergranular corrosion test The test pieces for the intergranular corrosion test shall be prepared according to EN ISO 3651-2. 11 Test methods 11.1 Chemical analysis The elements to be determined and reported shall be those specified in Tables 2, 3 and 4. The choice of a suitable physical or chemical analytical method for the analysis shall be at the discretion of the manufacturer. In case of dispute the method used shall be agreed between manufacturer and purchaser taking into account CR 10261. 11.2 Tensile test 11.2.1 At room temperature The test shall be carried out at room temperature according to EN 10002-1, and the following determined: tensile strength (Rm); 0,2 % proof strength (Rp0,2) and, where applicable, the 1,0 % proof strength (Rp1,0); percentage elongation after fracture with reference to a gauge length (L0) of 5,65 √S0; if a non proportional test piece is used, the percentage elongation value shall be converted to the value for a gauge length L0 = 5,65 √S0 using the conversion tables in EN IS0 2566-2. 11.2.2 At elevated temperature The test shall be carried out according to EN 10002- 5 at the temperature agreed at the time of enquiry and order (see 6.2) and the 0,2 % proof strength (Rp0,2) and, where applicable, the 1,0 % proof strength (Rp1,0) shall be determined. 11.3 Technological tests Depending on the tube dimensions one of the tests given in Table 16 shall be carried out.








































Table 16 – Technological tests
Outside diameter D mm				Wall thickness T mm
				< 2						2 ≤ T ≤ 16								16 < T ≤ 40
≤ 18				Flattening test a						Flattening test a								–
> 18 ≤ 150				Flattening test a						Ring expanding test a								Flattening test b
> 150				–						Ring tensile test								Ring tensile test c, d
^a The test may, at the discretion of the manufacturer, be replaced by drift expanding test for wall thicknesses ≤ 10 mm. ^b For T/D ≤ 0,15. ^cThe test may, at the discretion of the manufacturer, be replaced by flattening test for T/D ≤ 0,15. ^d Inside diameter ≥ 100 mm.



11.3.1 Flattening test The test shall be carried out according to EN 10233. The tube section shall be flattened in a press until the distance H between the platens reaches the value given by the following equation: where: H is the distance between platens, in mm, to be measured under load; D is the specified outside diameter, in mm; T is the specified wall thickness, in mm; C is the constant factor of deformation, which is: — 0,09 for austenitic steels and — 0,07 for austenitic-ferritic steels. After testing, the test piece shall be free from cracks or breaks. However, slight incipient cracks at its edges shall not be regarded as justification for rejection. 11.3.2 Ring tensile test The test shall be carried out according to EN 10237. The tube section shall be subjected to strain in the circumferential direction until fracture occurs. After fracture the test pieces shall not show any visible cracks without the use of magnifying aids (excluding the fracture point). 11.3.3 Drift expanding test The test shall be carried out according to EN 10234. The tube section shall be expanded with a 60° conical tool until the % increase in outside diameter shown in Table 17 is reached.













Table 17 – Drift expanding test requirements
% increase in outside diameter for d/D ^a
≤ 0,6								0,6 < d/D ≤ 0,8									> 0,8
9								15									17
^ad = D – 2T.
After testing, the test piece shall (excluding the fracture point) be free from cracks or breaks. However, slight incipient cracks at its edges shall not be regarded as justification for rejection. 11.3.4 Ring expanding test The test shall be carried out according to EN 10236. The tube section shall be expanded with a conical tool until it breaks. If an expansion of 40 % of the inside diameter for austenitic steels and of 30 % for austenitic-ferritic steels is reached the test may be considered as finished. The surface outside the fracture zone shall excluding the fracture point be free from cracks or breaks. However, slight incipient cracks at its edges shall not be regarded as justification for rejection. 11.4 Impact test 11.4.1 The test shall be carried out according to EN 10045-1 at the temperature specified by the applicable option (see 6.2). 11.4.2 The mean value of the three test pieces shall meet the requirements given in Tables 6, 7 or 8. One individual value may be below the specified value, provided that it is not less than 70 % of that value. 11.4.3 If the width (W ) of the test piece is less than 10 mm, the measured impact energy (KVp) shall be converted to impact energy (KVc) using the following equation: where KVC is the calculated impact energy, in J; KVp is the measured impact energy, in J; W is the width of the test piece, in mm. The calculated impact energy KVc shall comply with the requirements given in 11.4.2. 11.4.4 If the requirements of 11.4.2 are not met, then an additional set of three test pieces may be taken at the discretion of the manufacturer from the same sample and tested. To consider the test unit as conforming, after testing the second set, the following conditions shall be satisfied simultaneously: the average value of six tests shall be equal to or greater than the specified minimum average value; not more than two of six individual values may be lower than the specified minimum average value; not more than one of the six individual values may be lower than 70 % of the specified minimum average value. 11.4.5 The dimensions in millimetres of the test pieces, the measured impact energy values and the resulting average value shall be reported. 11.5 Intergranular corrosion test The intergranular corrosion test shall be carried out according to EN ISO 3651-2 to the specified method (A or B or C). 11.6 Leak tightness test 11.6.1 Hydrostatic test The hydrostatic test shall be carried out at a test pressure P of 70 bar2) or at a test pressure calculated using the following equation, whichever is lower: where P is the test pressure, in bar; D is the specified outside diameter, in mm; T is the specified wall thickness, in mm; S is the stress, in MPa, corresponding to 70 % of the specified minimum proof strength (Rp0,2) (see Tables 6, 7 and 8) for the steel grade concerned. The test pressure shall be held for not less than 5s for tubes with an outside diameter D less than or equal to 457 mm and for not less 10 s for tubes with an outside diameter greater than 457 mm. The tube shall withstand the test without showing leakage or visible deformation. NOTE This hydrostatic leak-tightness test is not a strength test. Option 22: A test pressure different from that specified in 11.6.1 and corresponding to a stress below 90 % of the specified minimum proof strength (Rp0,2) (see Tables 6, 7 and 8) for the steel grade concerned is specified. 11.6.2 Eddy current test The test shall be carried out according to EN 10246-2. 11.7 Dimensional inspection Specified dimensions, including straightness, shall be verified. The outside diameter shall be measured at the tube ends. For tubes with outside diameter D ≥ 406,4 mm, the diameter may be measured using a circumference tape. Unless option 23 is specified the wall thickness shall be measured at both tube ends. 2) 1 bar = 100 kPa. Option 23: The wall thickness shall be measured away from the tube ends according to an agreed procedure. 11.8 Visual examination Tubes shall be visually examined to ensure conformity to the requirements of 8.5.1. 11.9 Non-destructive testing 11.9.1 Tubes of test category 2 with outside diameter D > 101,6 mm or wall thickness T > 5,6 mm shall be subjected to ultrasonic testing for the detection of longitudinal imperfections, according to EN 10246-7, to acceptance level U2, sub-category C. Regions at the tube ends not automatically tested shall either be subjected to manual/semi-automatic ultrasonic testing according to EN 10246-7 to acceptance level U2, sub-category C or be cropped off. If option 14 (see 8.5.2.2) is specified, the tubes with outside diameter D ≤ 101,6 mm and wall thickness T ≤ 5,6 mm shall be subjected to ultrasonic testing for the detection of longitudinal imperfections according to EN 10246-7 to acceptance level U2, sub-category C. 11.9.2 If option 15 (see 8.5.2.2) is specified, the tubes shall be subjected to ultrasonic testing for the detection of transverse imperfections according to EN 10246-6 to acceptance level U2, sub-category C. 11.9.3 If option 16 (see 8.5.2.2) is specified the tubes shall be subjected to ultrasonic testing for the detection of the laminar imperfections at the tube ends according to EN 10246-17. 11.10 Material identification Each tube shall be tested by an appropriate method to ensure that the correct grade is being supplied. 11.11 Retests, sorting and reprocessing For retests, sorting reprocessing the requirements of EN 10021 shall apply. 12 Marking 12.1 Marking to be applied Depending on the size of the tubes, the following marking shall either be applied on a label attached to the bundle or the box of tubes, or be marked indelibly on each tube at least at one end. The marking shall include the following information: manufacturer's name or trade mark; dimension of the tubes; number of this part of EN 10216 and the steel name (or number) (see 5.2); cast number or a code number; test category; mark of the inspection representative; identification number (e.g. order or item number) which permits the correlation of the product or delivery unit to the related document, and at the discretion of the manufacturer: symbol identifying the delivery condition (see Table 1). Example of marking: X – 168,3 X 4,5 – EN 10216-5 – 1.4301 – TC1 – HFD – Y – Z1 – Z2 where X is the manufacturer’s mark; TC1 is the designation of the test category 1; HFD is the identification of the delivery condition; Y is the cast number or a code number; Z1 is the mark of the inspection representative; Z2 is the identification number. 12.2 Additional marking Option 24: Additional marking, as agreed upon at the time of enquiry and order, shall be applied. 13 Handling and packaging The tubes shall be protected from carbon steel strapping, which shall not come into contact with the tubes. Option 25: If special protection is to be applied, this shall be specified at the time of enquiry and order































































Table A.1 – Creep rupture strength values (continued)
Steel designation			Temperature^a				Creep rupture strength b in MPa for
name	number		°C				10 000 h					100 000 h					200 000 h					250 000 h
X6CrNi18-10	1.4948		500				250					192					176					—
			510				239					182					166					—
			520				227					172					156					—
			530				215					162					146					—
			540				203					151					136					—
			550				191					140					125					—
			560				177					128					114					—
			570				165					117					104
			580				154					107					95					—
			590				143					98					86					—
			600				132					89					78					—
			610				122					81					70					—
			620				113					73					62					—
			630				104					65					55
			640				95					52					49					—
			650				87					58					43					—
			660				80					47					34					—
			670				73					42					38					—
			680				67					37					30					—
			690				61					32					26
			700				55					28					22					—
			710				-45					-22					—					—
			720				-41					-20					—					—
			730				-38					-18					—					—
			740				-36					-16					—					—
			750				-34					-15					—
X7CrNiTi18-10	1.494		550				186					142					—					—
			575				162					110					—					—
			600				135					83					—					—
			625				111					65					—					—
			650				88					49					—					—
			675				67					36					—
			700				49					25					—					—
			725				38					19					—					—
			750				31					14					—					—
			775				24					11					—					—
			800				20					8					—					—
X7CrNiNb18-10	1.4912		540				253					186 ∗					169 ∗					—
			550				237					172 ∗					156 ∗					—
			580				192					135 ∗					122 ∗					—
			600				166					115 ∗					102 ∗					—
			620				142					97 ∗					86 ∗					—
			650				112					74 ∗					64 ∗					—
			670				96					61					(51) ∗					—
			700				74															—
X6CrNiTiB18-10	1.4941		550				230					170					150					—
			560				220					150					130					—
			570				210					140					120					—
			580				190					120					110					—
			590				170					110					100					—
			600				160					100					90					—
			610				140					92					82					—
			620				130					84					74					—
			630				120					76					66					—
			640				110					68					60					—
			650				100					62					54					—
			660				90					56					48					—
			670				82					50					43					—
			680				74					44					40					—
			690				66					39					38					—
			700				60					35					29					—
X6CrNiMo17-13-2	1.4918		550				250					175					—					—
			560				235					164					—					—
			570				220					153					—					—
			580				205					142					—					—
			590				190					131					—					—
			600				175					120					—					—
			610				160					109					—					—
			620				147					98					—					—
			630				135					88					—					—
			640				123					78					—					—
			650				111					69					—					—
			660				100					60					—					—
			670				91					52					—					—
			680				82					46					—					—
			690				73					40					—					—
			700				65					34					—					—
X5NiCrAlTi31-20	1.4958		500				290					215					-196					—
			510				279					205					-186					—
			520				267					195					-176					—
			530				254					184					-166					—
			540				240					172					-155					—
			550				225					160					-143					—
			560				208					147					-130					—
			570				190					133					-117					—
			580				172					119					-105					—
			590				155					106					-93					—
			600				140					95					-83					—
			610				128					85					-74					—
			620				118					78					-68					—
			630				109					72					-63					—
			640				103					67					-59					—
			650				97					63					-55					—
			660				91					59					-52					—
			670				85					55					-48					—
			680				80					52					-45					—
			690				74					48					-41					—
			700				69					44					-38					—
X5NiCrAlTi31-20	1.4958+Rac		500				315					258					-242					—
			510				297					241					-225					—
			520				280					224					-207					—
			530				262					206					-190					—
			540				243					189					-172					—
			550				224					171					-155					—
			560				204					153					-138					—
			570				184					136					-122					—
			580				165					119					-106					—
			590				147					104					-92					—
			600				131					90					-80					—
			610				117					79					-70					—
			620				106					70					-62					—
			630				96					62					-55					—
			640				87					56					-49					—
			650				80					51					-44					—
			660				73					46					-40					—
			670				67					42					-36					—
			680				61					38					-33					—
			690				55					34					-29					—
			700				50					30					-26					—
X8NiCrAl Ti32-21	1.4959		700				74,0					50,0					(44,0)					—
			710				68,0					45,0					(39,4)					—
			720				62,0					40,9					(35,5)					—
			730				56,0					37,4					(32,2)					—
			740				51,5					34,3					(29,3)					—
			750				47,5					31,6					(26,8)					—
			760				43,7					29,1					(24,6)					—
			770				40,5					27,0					(22,4)					—
			780				37,5					24,9					(20,7)					—
			790				35,0					23,1					(19,0)					—
			800				32,6					21,4					(17,5)					—
			810				30,4					19,8					(16,2)					—
			820				28,4					18,4					(15,1)					—
			830				26,5					17,0					(14,0)					—
			840				24,7					15,7					(13,0)					—
			850				23,0					14,4					(12,1)					—
			860				21,4					13,3					(11,2)					—
			870				19,9					12,2					(10,3)					—
			880				18,4					11,2					(9,5)					—
			890				17,0					10,3					(8,7)					—
			900				15,6					9,4					(8,0)					—
			910				14,4					8,6					(7,3)					—
			920				13,2					7,8					(6,7)					—
			930				12,1					7,1					(6,2)					—
			940				11,1					6,4					(5,6)					—
			950				10,1					5,8					(5,0)					—
			960				9,2					5,3					(4,5)					—
			970				8,4					4,8					(4,1)					—
			980				7,7					4,4					(3,7)					—
			990				7,0					4,0					(1,3)					—
			1000				6,4					3,7					(1,0)					—
X3CrNiMoBN17-13-3	1.491		550				290					220					-200					—
			560				272					202					-184					—
			570				254					186					-166					—
			580				237					170					-151					—
			590				220					155					-137					—
			600				205					141					-122					—
			610				190					127					-113					—
			620				174					114					-100					—
			630				162					102					-91					—
			640				148					92					-81					—
			650				135					83					-73					—
			660				122					75					-65					—
			670				112					68					-58					—
			680				102					61					-52					—
			690				93					56					-46					—
			700				84					52					-46					—
			710				78					48					-39					—
			720				71					45					-36					—
			730				65					41					-34					—
			740				58					37					-31					—
			750				52					34					-28					—
			760				48					31					-26					—
			770				44					28					-24					—
			780				41					25					-21					—
			790				37					22					-19					—
			800				33					20					-17					—
X8CrNiNb16-13	1.4961		580				182					129					115					—
			590				170					119					105					—
			600				157					108					94					—
			610				145					98					85					—
			620				134					89					77					—
			630				124					80					69					—
			640				113					72					61					—
			650				103					64					53					—
			660				93					57					47					—
			670				84					50					41					—
			680				76					44					36					—
			690				70					39					31					—
			700				64					34					27					—
			710				59					30					25					—
			720				55					27					22					—
			730				51					25					19					—
			740				47					22					17					—
			750				44					20					15					—
X8CrNiMoVNb16-13	1.4988		580				299					209					180					—
			590				274					189					164					—
			600				250					172					147					—
			610				228					156					132					—
			620				207					139					117					—
			630				189					125					105					—
			640				173					111					93					—
			650				157					98					82					—
			580				270					186					162					—
			590				246					169					147					—
			600				225					152					132					—
			610				205					136					118					—
			620				186					122					103					—
			630				169					107					91					—
			640				152					94					80					—
			650				137					83					71					—
X8CrNiMoNb16-16	1.4981		660				124					75					63					—
			670				111					66					55					—
			680				100					59					49					—
			690				91					51					42					—
			700				83					44					35					—
			710				77					37					29					—
			720				70					31					24					—
			730				64					26					20					—
			740				59					23					17					—
			750				54					20					15					—
X10CrNiMoMnNbVB 15-10-1	1.4982		600				241					199					183					177
			610				231					185					165					158
			620				221					167					143					134
			630				210					147					118					109 *
			640				198					122					97					90 *
			650				184					100					82					78 *
			660				167					84					72					69 *
			670				147					74					64					62 *
			680				124					66					58					56 *
			690				102					59					52					51 *
			700				86					54					48					46 *
			710				75					49					43					42 *
			720				67					45					39					37 *
			730				61					40 *					35 *					—
			740				55					36 *					—					—
			750				51					30 *					—					—
			760				46					—					—					—
			770				42					—					—					—
			780				38					—					—					—
^a For cooling conditions see Table 7. ^b Values in parantheses involve time and/or stress extrapolation; values with asterisk involve time extrapolation. ^c+RA = recrystallizing annealed condition.

Supplier of seamless stainless steel Tubes according to EN 10216-5 standard.

TAP Vietnam International Investment Joint Stock Company (TAP Vietnam) is a well-known supplier of Stainless Steel Seamless tubes to EN 10216-5 standard. The company is dedicated to providing high-quality stainless steel products to customers worldwide. With years of experience in the industry, TAP Vietnam has become a reliable partner for many businesses in need of stainless steel products.

Stainless steel is widely used in many industries due to its unique properties, such as its resistance to corrosion and high-temperature strength. Seamless tubes are an important component in many industrial applications, including chemical processing, oil and gas, and food and beverage industries.

TAP Vietnam's stainless steel seamless tubes to EN 10216-5 standard are made of the highest quality materials, ensuring durability and reliability. The tubes are available in a variety of sizes and thicknesses to meet the needs of different industries. The company's products are tested and certified to meet the most stringent international standards, ensuring that they meet the requirements of even the most demanding applications.

One of the key advantages of TAP Vietnam's products is their consistency. The company uses advanced manufacturing processes and quality control measures to ensure that each tube meets the same high standards. This means that customers can rely on TAP Vietnam's products to perform consistently over time, reducing the risk of failures or defects.

Another advantage of TAP Vietnam's stainless steel seamless tubes is their versatility. The tubes are suitable for a wide range of applications, from high-temperature and high-pressure environments to corrosive environments. This versatility makes them an excellent choice for a variety of industries, including chemical processing, oil and gas, and food and beverage.

TAP Vietnam's commitment to quality and customer satisfaction has made them a trusted supplier of stainless steel seamless tubes to EN 10216-5 standard. The company's team of experts is dedicated to providing customers with the highest level of service and support, from product selection to delivery and beyond. Whether customers need standard products or custom solutions, TAP Vietnam is ready to meet their needs.

In conclusion, TAP Vietnam International Investment Joint Stock Company is a leading supplier of stainless steel seamless tubes to EN 10216-5 standard. With their commitment to quality, consistency, and customer satisfaction, TAP Vietnam is a reliable partner for businesses in need of high-quality stainless steel products. If you are looking for a trusted supplier of stainless steel seamless tubes, TAP Vietnam is an excellent choice.

Seamless Steel Tube X5CrNiMo17-12-2, EN 10216-5	Seamless Steel Tube X2CrNiMo17-12-2, EN 10216-5	Seamless Steel Tube X1CrNi25-21, EN 10216-5
Seamless Steel Tube X6CrNiNb18-10, EN 10216-5	Seamless Steel Tube X6CrNiTi18-10, EN 10216-5	Seamless Steel Tube X5CrNi18-10, EN 10216-5
Seamless Steel Tube X2CrNiN18-10, EN 10216-5	Seamless Steel Tube X2CrNi19-11, EN 10216-5	Seamless Steel Tube X2CrNi18-9, EN 10216-5

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Supplier of seamless stainless steel Tubes according to EN 10216-5 standard.

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