SIST EN 10297-2:2006

Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel

This European Standard specifies the technical delivery conditions for seamless tubes, of circular cross section, made from stainless steels, for mechanical and general engineering purposes.

Nahtlose kreisförmige Stahlrohre für den Maschinenbau und allgemeine technische Anwendungen - Technische Lieferbedingungen - Teil 2: Rohre aus nichtrostenden Stählen

Dieses Dokument enthält die technischen Lieferbedingungen für nahtlose Rohre mit kreisförmigem Querschnitt aus nichtrostendem Stahl, die für die Anwendung im Maschinenbau und für allgemeine technische Anwendungen bestimmt sind.

Tubes sans soudure de section circulaire en acier pour utilisation en mécanique générale et en construction mécanique - Conditions techniques de livraison - Partie 2: Tubes en acier inoxydable

La présente partie de l'EN 10297 spécifie les conditions techniques de livraison des tubes sans soudure de section circulaire en acier inoxydable pour utilisation en mécanique générale et en construction mécanique.

Okrogle nevarjene jeklene cevi za strojništvo in splošno uporabo v tehniki – Tehnični dobavni pogoji – 2. del: Nerjavna jekla

General Information

• Status: Published
• Publication Date: 28-Feb-2006
• ICS: 77.140.75 - Steel pipes and tubes for specific use
• Technical Committee: IFEK - Ferrous metals
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-2006
• Due Date: 01-Mar-2006
• Completion Date: 01-Mar-2006
• Ref Project: EN 10297-2:2005 - Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel

Relations

• Corrected By: SIST EN 10297-2:2006/AC:2007 - Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel
• Effective Date: 01-May-2007
• Parent: SIST EN 10294-1:2005 - Hollow bars for machining - Technical delivery conditions - Part 1: Non alloy and alloy steels
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 10297-2:2006
01-marec-2006
2NURJOHQHYDUMHQHMHNOHQHFHYL]DVWURMQLãWYRLQVSORãQRXSRUDERYWHKQLNL±
7HKQLþQLGREDYQLSRJRML±GHO1HUMDYQDMHNOD
Seamless circular steel tubes for mechanical and general engineering purposes -
Technical delivery conditions - Part 2: Stainless steel
Nahtlose kreisförmige Stahlrohre für den Maschinenbau und allgemeine technische
Anwendungen - Technische Lieferbedingungen - Teil 2: Rohre aus nichtrostenden
Stählen
Tubes sans soudure de section circulaire en acier pour utilisation en mécanique
générale et en construction mécanique - Conditions techniques de livraison - Partie 2:
Tubes en acier inoxydable
Ta slovenski standard je istoveten z: EN 10297-2:2005
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST EN 10297-2:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 10297-2:2006

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SIST EN 10297-2:2006
EUROPEAN STANDARD
EN 10297-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 77.140.75

English Version
Seamless steel tubes for mechanical and general engineering
purposes - Technical delivery conditions - Part 2: Stainless steel
Tubes sans soudure en acier pour utilisation en mécanique Nahtlose kreisförmige Stahlrohre für den Maschinenbau
générale et en construction mécanique - Conditions und allgemeine technische Anwendungen - Technische
techniques de livraison - Partie 2: Tubes en acier Lieferbedingungen - Teil 2: Nichtrostender Stähle
inoxydable
This European Standard was approved by CEN on 25 March 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10297-2:2005: E
worldwide for CEN national Members.

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SIST EN 10297-2:2006
EN 10297-2:2005 (E)
Contents Page
Foreword .3
Introduction.4
1 Scope .5
2 Normative references .5
3 Terms and definitions.6
4 Symbols.6
5 Classification and designation .6
6 Information to be supplied by the purchaser.6
7 Manufacturing process.7
8 Requirements .8
9 Inspection and testing .20
10 Sampling.22
11 Test methods.23
12 Marking .25
13 Handling and packaging.25
Annex A (normative) Process route and surface conditions .26
Annex B (informative) Guideline data on heat treatment during fabrication and hot working as part of
further processing .27
Annex C (normative) Formulae for calculation of nominal sectional properties .32
Bibliography.33

2

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SIST EN 10297-2:2006
EN 10297-2:2005 (E)
Foreword
This document (EN 10297-2:2005) 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 June 2006, and conflicting national standards shall be withdrawn at the latest by
June 2006.
Another part of EN 10297 is:
Part 1: Non-alloy and alloy steel tubes
Another European Standard series, covering seamless steel tubes for mechanical and general engineering
purposes, currently being prepared is:
EN 10296-2 Welded circular steel tubes for mechanical and general engineering purposes — Technical delivery
conditions – Part 2: Stainless steel.
Other series of European Standards being prepared in this area are prEN 10294 - hollow bars for machining and
EN 10305 - steel tubes for precision applications.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
3

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SIST EN 10297-2:2006
EN 10297-2:2005 (E)
Introduction
The European Committee for Standardisation (CEN) draws attention to the fact that it is claimed that compliance
with this document may involve the use of patents applied to steel grades 1.4362, 1.4410, 1.4477 and 1.4854, the
compositions of which are given in Tables 3 and 4.
CEN takes no position concerning the evidence, validity and scope of these patent rights.
The holders of these patent rights have assured CEN that they are willing to negotiate licences, under reasonable
and non-discriminatory terms and conditions, with applicants throughout the world. In this respect, the statements
of the holders of these patent rights are registered with CEN. Information may be obtained from:

Grades 1.4362, 1.4410 and 1.4477
Sandvik AB
SE-811 81 SANDVIKEN
Sweden

Grade 1.4854
Outokumpu OYJ
Intelectual Property Management
P.O Box 27
FI – 02201 ESPOO
Finland

Attention is drawn to the possibility that some of the elements within this document may be the subject of patent
rights other than those indicated above. CEN shall not be responsible for identifying any or all such patent rights.
4

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SIST EN 10297-2:2006
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1 Scope
This European Standard specifies the technical delivery conditions for seamless tubes, of circular cross section,
made from stainless steels, for mechanical and general engineering purposes.
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.
EN 10002-1, Metallic materials – Tensile testing – Part 1: Method of test (at ambient temperature)
EN 10020:2000, Definition and classification of grades of steel
EN 10021:1993, General technical delivery requirements for steel and iron products
EN 10027-1, Designation systems for steel – Part 1: Steel names, principal symbols
EN 10027-2, Designation systems for steel – Part 2: Numerical system
EN 10052:1993, Vocabulary of heat treatment terms for ferrous products
EN 10088-1, Stainless steels – Part 1: List of stainless steels
EN 10168, Steel products – Inspection documents – List of information and description
EN 10204, Metallic products – Types of inspection documents
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 austenitic-ferritic steel tubes for verification of hydraulic leak-
tightness
EN 10246-3, Non-destructive testing of steel tubes – Part 3: Automatic eddy current testing of seamless and
welded (except submerged arc-welded) steel tubes for the detection of imperfections
EN 10246-5, Non-destructive testing of steel tubes – Part 5: Automatic full peripheral magnetic transducer/flux
leakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection
of longitudinal 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 10256, Non-destructive testing of steel tubes – Qualification and competence of level 1 and 2 non-destructive
testing personnel
EN 10266:2003, Steel tubes, fittings and structural hollow sections - Symbols and definitions of terms for use in
product standards
CR 10260:1998, Designation system for steel – Additional symbols
EN ISO 377, Steel and steel products – Location and preparation of samples and test pieces for mechanical testing
(ISO 377:1997)
EN ISO 1127, Stainless steel tubes – Dimensions, tolerances and conventional masses per unit length
(ISO 1127:1992)
5

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SIST EN 10297-2:2006
EN 10297-2:2005 (E)
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)
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 10020:2000, EN 10021:1993,
EN 10052:1993 and EN 10266:2003 together with the following apply.
employer
organisation for which the person works on a regular basis.
NOTE The employer may be either the tube manufacturer or a third party organisation providing non-destructive testing
(NDT) services.
4 Symbols
For the purposes of this European Standard, the symbols given in EN 10266:2003 and CR 10260:1998 apply.
Not applicable.
5 Classification and designation
5.1 Classification
In accordance with the classification system in EN 10020, the steel grades listed in Tables 1, 2, 3 and 4 are
stainless steels.
5.2 Designation
For tubes covered by this document the steel designation consists of:
 number of this document (EN 10297-2);
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, wall thickness T) (see 8.7.1);
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SIST EN 10297-2:2006
EN 10297-2:2005 (E)
d) steel designation according to this document (see 5.2);
e) delivery condition, where necessary (see 7.2.2).
6.2 Options
A number of options are specified in this document and these are listed below with appropriate clause references.
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) process route and/or surface condition (see 7.2.1);
2) controlled sulphur content (see Tables 1, 2, and 3);
3) non-destructive testing (see 8.4.2);
4) leak tightness test (see 8.4.2);
5) straightness (see 8.5);
6) exact lengths (see 8.7.2);
7) outside diameter and thickness tolerances (see 8.7.3.1);
8) specific inspection and testing (see 9.1);
9) test report 2.2 (see 9.2.1);
10) inspection certificate, 3.2 (see 9.2.1);
11) leak tightness test method (see 11.2.1).
6.3 Example of an order
Twenty five tonnes of seamless steel tubes with a specified outside diameter of 60,3 mm, a specified wall thickness
of 3,6 mm, in accordance with EN 10297-2, made from steel grade 1.4016, and with a test report 2.2 (option 9) in
accordance with EN 10204.
25 t - tube - 60,3 x 3,6 - EN 10297-2 – 1.4016 - Option 9
7 Manufacturing process
7.1 Steelmaking process
The steelmaking process is at the discretion of the manufacturer.
7.2 Tube manufacturing and delivery conditions
7.2.1 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
7.2.2. Acceptable process routes and surface conditions are given in Table A.1. The choice of process route and
surface condition is left to the discretion of the manufacturer, unless Option 1 is specified.
Option 1: The process route and/or surface condition is specified by the purchaser from those in Table A.1.
7.2.2 Tubes shall be supplied in the delivery conditions given in Tables 6, 7, 8 or 9, as applicable. Possible
delivery conditions are annealed (+A) for ferritic steels, quenched and tempered (+QT) for martensitic steels and
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EN 10297-2:2005 (E)
solution annealed (+AT) for austenitic and austenitic-ferritic steels. (See Annex B for guidance on heat treatment
following fabrication and further processing.)
For steel grade 1.4006, the purchaser shall specify the delivery condition, either QT 550 or QT 650. The process
route and surface condition for this grade shall be at the discretion of the manufacturer unless Option 1 (see 7.2.1)
is specified.
Solution heat treatment shall consist of heating the tubes uniformly to the appropriate required temperature and
then cooling rapidly. The solution treatment may be omitted if the conditions during hot working and subsequent
cooling are such that the mechanical properties of the product can be met and the requirements for resistance to
intergranular corrosion as defined in EN ISO 3651-2 can be obtained. See Annex B for guidance on heat treatment
during fabrication and hot working as part of further processing.
7.2.3 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 with 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 the appropriate standards, e.g. EN 473 and EN 10256.
8 Requirements
8.1 General
Tubes, when supplied in a delivery condition in accordance with 7.2.2, using a process route and to a surface
condition given in Table A.1 and inspected in accordance with Clause 9, shall comply with the requirements of this
document.
In addition, the general technical delivery requirements specified in EN 10021 shall apply.
Grades additional to those in Tables 1, 2, 3 and 4 may be supplied by agreement; the chemical analysis and the
mechanical properties for these shall be agreed at the time of enquiry and order.
8.2 Chemical composition
The cast analysis reported by the steel producer shall apply and shall conform to the requirements in Tables 1, 2, 3
or 4, as appropriate.
Elements not included in Tables 1, 2, 3 and 4 shall not be intentionally added to the steel without the agreement of
the purchaser, except for elements which may be added for finishing the cast. All appropriate measures shall be
taken to prevent the addition of undesirable elements from scrap or other materials used in the steelmaking
process.
The permissible deviations of a product analysis from the specified limits of the cast analysis are given in Table 5.
NOTE When subsequently welding tubes produced according to this document, account should be taken of the fact that
the behaviour of the steel during and after welding is dependent not only on the steel but also on the conditions of preparing for
and carrying out the welding. Some of the steels specified in this document cannot be welded unless specialised techniques are
employed by specialist welders.
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Table 1 — Chemical composition (cast analysis) for tubes made fromferritic and martensitic corrosion resistant steels, in % by mass
Steel grade C Si Mn P S Cr Ni Ti Others
Steel name Steel min. max. max. max. max. max. min. max. max. min. max. min. max.
number
Ferritic steels


X2CrTi12 1.4512 0,030 1,00 1,00 0,040 0,015 10,5 12,5 6 x (C + 0,65
N)
a
X6CrAl13 1.4002 0,08 1,00 1,00 0,040 0,015 12,0 14,0  Al
Al0,10
0,30
.

a
X6Cr17 1.4016 0,08 1,00 1,00 0,040 0,015 16,0 18,0
b
a
X3CrTi17 1.4510 0,05 1,00 1,00 0,040 0,015 16,0 18,0
[4 x
0,80
(C+N) +
b
0,15]
Martensitic steel

a
X12Cr13 1.4006 0,08 0,15 1,00 1,50 0,040 0,015 11,5 13,5 0,75
a
Option 2 a controlled sulphur content of 0,015 % to 0,030 % is specified.
b
Stabilisation may be applied by the use of titanium or niobium or zirconium. According to the atomic number of these elements and the content of carbon and nitrogen, the
7 7
equivalence shall be the following: Ti ≈ Nb ≈ Zr.
4 4
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Table 2 — Chemical composition (cast analysis) for tubes made from austenitic corrosion resistant steels, in % by mass
Steel grade C Si Mn P S Cr  Mo Ni Cu N Others
Steel name Steel min. max. min. max. max. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max.
number
a
X2CrNi18-9 1.4307 0,030 1,00 2,00 0,045 17,5 19,5 8,0 10,5  0,11
0,015
a
X2CrNi19-11 1.4306 0,030 1,00 2,00 0,045 18,0 20,0 10,0 12,0  0,11
0,015
a
X2CrNiN18-10 1.4311 0,030 1,00 2,00 0,045 17,019,5 8,5 11,5,  0,120,22
0,015
a
X5CrNi18-10 1.4301 0,07 1,00 2,00 0,045 17,0 19,5 8,0 10,5  0,11
0,015
X8CrNiS18-9 1.4305 0,10 1,00 2,00 0,045 0,15 0,35 17,0 19,0 8,0 10,0 1,00 0,11
a b
X6CrNiTi18-10 1.4541 0,08 1,00 2,00 0,045 17,0 19,0 9,0   Ti Ti
0,015 12,0
5 x C 0,70
b
X6CrNiNb18-10 1.4550 0,08 1,00 2,00 0,045 0,015 17,0 19,0 9,0   Nb Nb
12,0
10 x C 1,00
X1CrNi25-21 1.4335 0,020 0,25 2,00 0,025 0,010 24,0 26,0 0,20 20,0 22,0  0,11
a
X2CrNiMo17-12-2 1.4404 0,030 1,00 2,00 0,045 16,5 18,5 2,00 2,50 10,0 14,5  0,11
0,015
a
X5CrNiMo17-12-2 1.4401 0,07 1,00 2,00 0,045 16,5 18,5 2,00 2,50 10,0 13,0  0,11
0,015
X1CrNiMoN25-22-2 1.4466 0,020 0,70 2,00 0,025 0,010 24,0 26,0 2,00 2,50 21,0 23,0  0,10 0,16
a
X6CrNiMoTi17-12-2 1.4571 0,08 1,00 2,00 0,045 16,5 18,5 2,00 2,50 10,5 14,0   Ti Ti
0,015
5 x C 0,70
X6CrNiMoNb17-12- 1.4580 0,08 1,00 2,00 0,045 0,015 16,5 18,5 2,00 2,50 10,5 13,5   Nb Nb
2
10 x C 1,00
X2CrNiMoN17-13-3 1.4429 0,030 1,00 2,00 0,045 0,015 16,5 18,5 2,50 3,00 11,0 15,0  0,12 0,22
a
X3CrNiMo17-13-3 1.4436 0,05 1,00 2,00 0,045 16,5 18,5 2,50 3,00 10,5 14,0 0,11

0,015
a
X2CrNiMo18-14-3 1.4435 0,030 1,00 2,00 0,045 17,0 19,0 2,50 3,00 12,5 15,0  0,11
0,015
X2CrNiMoN17-13-5 1.4439 0,030 1,00 2,00 0,045 0,015 16,5 18,5 4,0 5,0 12,5 14,5  0,12 0,22
X1NiCrMoCu31-27- 1.4563 0,020 0,70 2,00 0,030 0,010 26,0 28,0 3,0 4,0 30,0 32,0 0,70 1,50 0,11
4
X1NiCrMoCu25-20- 1.4539 0,020 0,70 2,00 0,030 0,010 19,0 21,0 4,0 5,0 24,0 26,0 1,20 2,00 0,15
5
X1CrNiMoCuN20- 1.4547 0,020 0,70 1,00 0,030 0,010 19,5 20,5 6,0 7,0 17,5 18,5 0,50 1,00 0,18 0,25
18-7
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Table 2 — Chemical composition (cast analysis) for tubes made from austenitic corrosion resistant steels, in % by mass
(concluded)
X1NICrMoCuN25- 1.4529 0,020 0,50 1,00 0,030 0,010 19,0 21,0 6,0 7,0 24,0 26,0 0,50 1,50 0,15 0,25
20-7

X2NiCrAlTi32-20 1.4558 0,030 0,70 1,00 0,020 0,015 20,0 23,0 32,0 35,0   Ti Ti
8 x (C+N) 0,60
Al Al
0,15 0,45
a
Option 2 a controlled sulphur content of 0,015 % to 0,030 % is specified.
b
Where for special reasons, e.g. hot workability, it is necessary to minimize the delta ferrite content, or with the aim of low permeability, the maximum nickel content may be
increased by 1,00 %.

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Table 3 — Chemical composition (cast analysis) for tubes made from austenitic-ferritic corrosion resistant steels, in % by mass
Steel grade C Si Mn P S Cr Mo Ni Cu N Others
Steel name Steel max. min. max. min. max. max. max. min. max. min. max. min. max. min. max. min. max. min. max.
number
a
1.4362 0,030 1,00 2,000,0350,01522,024,0 0,10 0,60 3,5 5,5 0,100,600,050,20
X2CrNiN23-4
b
X3CrNiMoN27-5-2 1.4460 0,05 1,00 2,000,035 25,0 28,0 1,30 2,00 4,5 6,5  0,05 0,20
0,015
a
1.4477 0,030 0,50 0,80 1,50 0,030 0,015 28,0 30,0 1,50 2,60 5,8 7,5  0,30 0,40
X2CrNiMoN29-7-2
X2CrNiMoN22-5-3 1.4462 0,030 1,00 2,000,0350,01521,023,0 2,5 3,5 4,5 6,5  0,100,22
X2CrNiMoCuN25-6-3 1.4507 0,030 0,70 2,000,0350,01524,026,0 2,7 4,0 5,5 7,5 1,002,500,150,30
a
X2CrNiMoN25-7-4 1.4410 0,030 1,00 2,000,0350,01524,026,0 3,0 4,5 6,0 8,0  0,240,35
X2CrNiMoCuWN25-7-4 1.4501 0,030 1,00 1,000,0350,01524,026,0 3,0 4,0 6,0 8,0 0,501,000,200,30W W
0,50 1,00
X2CrNiMoSi18-5-3 1.4424 0,030 1,40 2,00 1,20 2,00 0,035 0,015 18,0 19,0 2,50 3,00 4,5 5,2  0,05 0,10

a
Patented steel grade.

b
Option 2 a controlled sulphur content of 0,015 % to 0,030 % is specified.
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Table 4 — Chemical composition (cast analysis) for tubes made from ferritic and austenitic heat resisting steels, in % by mass
Steel grade C Si Mn P S Cr Ni N Ti Others
Steel name Steel min. max. min. max. max. max. max. min. max. min. max. min. max. min. max. min. max.
number
Ferritic steels
X18CrN28 1.4749 0,15 0,20 1,00 1,00 0,040 0,015 26,0 29,0  0,15 0,25
Austenitic steels
X8CrNiTi18-10 1.4878 0,10 1,00 2,00 0,0450,01517,019,0 9,0 12,0  5xC 0,80
X9CrNiSiNCe21-11-2 1.4835 0,05 0,12 1,40 2,50 1,00 0,045 0,015 20,0 22,0 10,0 12,0 0,12 0,20  Ce Ce
0,03 0,08
X12CrNi23-13 1.4833 0,15 1,00 2,00 0,0450,01522,024,0 12,014,0 0,11
X8CrNi25-21 1.4845 0,10 1,50 2,00 0,0450,01524,026,0 19,022,0 0,11
X10NiCrAlTi32-21 1.4876 0,12 1,00 2,00 0,0300,01519,023,0 30,034,0  0,150,60 Al Al
0,15 0,60
a
X6NiCrSiNCe35-25 1.4854 0,04 0,08 1,20 2,00 2,00 0,040 0,015 24,0 26,0 34,0 36,0 0,12 0,20  Ce Ce
0,03 0,08
a
Patented steel grade

13

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SIST EN 10297-2:2006
EN 10297-2:2005 (E)

Table 5 — Permissible deviations of the product analysis from the specified limits on cast analysis given in
Tables 1 to 4
Element Limiting values for the Permissible deviation of

cast analysis in the product analysis
accordance with
Tables 1, 2, 3 and 4

% by mass % by mass
C + 0,005
≤ 0,030
> 0,030 ≤ 0,20 ± 0,01
Si ≤ 1,00 + 0,05
> 1,00 ≤ 2,50 ±0,10
Mn
≤ 1,00 ± 0,03

> 1,00 ≤ 2,00 ±0,04
P + 0,005
≤ 0,045
+ 0,003
≤ 0,015
S
> 0,015 ≤ 0,030 ±0,005

> 0,15 ≤ 0,35 ± 0,02

> 10,50 ≤ 15,0 ± 0,15
Cr
> 15,0 ≤ 20,0 ± 0,20

> 20,0 ≤ 30,0 ± 0,25
Mo
≤0,60 ±0,03
> 0,60 < 1,75
± 0,05
≥ 1,75 ≤ 7,00 ± 0,10
Ni <1,00 ± 0,03

≥ 1,0 ≤ 5,0 ± 0,07
> 5,0 ≤ 10,0 ± 0,10
> 10,0 ≤ 20,0 ± 0,15
> 20,0 ≤ 36,0 ± 0,20
Al
≥ 0,10 ≤ 0,30 ± 0,05

> 0,30 ≤ 0,60 ± 0,10
Cu ≤ 1,00 ± 0,07
> 1,00 ≤ 2,50 ± 0,10
N ≤ 0,40 ± 0,01
Nb
≤ 1,00 ± 0,05
Ti
≤ 0,80 ± 0,05
W ± 0,05
≥ 0,50 ≤ 1,00
Ce
≤ 0,08 ± 0,01
8.3 Mechanical properties
The mechanical properties of the tubes covered by this document shall conform to the requirements in Tables, 6, 7,
8 and 9.

14

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SIST EN 10297-2:2006
EN 10297-2:2005 (E)
Table 6 — Delivery conditions and mechanical properties for tubes made from ferritic and martensitic
corrosion resistant steels
Steel grade Delivery Proof strength Tensile Elongation Resistance to
condition strength A intergranular
b
min. min. min. corrosion
a
MPa MPa %
c c
Steel Steel R R R l t
p0,2 p1,0 m
name number
Ferritic steels
X2CrTi12 1.4512 +A 210 220 380 25 25 No
X6CrAl13 1.4002 +A 210 220 400 17 17 No

d
X6Cr17 1.4016 +A 240 250 430 20 20 Yes
X3CrTi17 1.4510 +A 230 240 420 23 23 Yes
Martensitic steels
X12Cr13 1.4006 +QT 550 400 410 550 15 15 No
 +QT 650 450 460 650 12 12 No
2
a
1 MPa = 1 N/mm

b
When tested in accordance with EN ISO 3651-2.
c

l = longitudinal, t = transverse.

d
Not if welding is subsequently carried out.

15

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SIST EN 10297-2:2006
EN 10297-2:2005 (E)
Table 7 — Delivery conditions and mechanical properties for tubes made from austenitic corrosion
resistant steels
Steel grade Delivery Proof strength Tensile Elongation Resistance to
condition strength A intergranular
b
min. min min. corrosion
a
MPa MPa %

Steel name Steel c c
R R R l t
p0,2 p1,0 m
number
X2CrNi18-9 1.4307 +AT 180 215 460 40 35 Yes
X2CrNi19-11 1.4306 +AT 180 215 460 40 35 Yes
X2CrNiN18-10 1.4311 +AT 270 305 550 35 30 Yes

d
X5CrNi18-10 1.4301 +AT 195 230 500 40 35
Yes
X8CrNiS18-9 1.4305 +AT 190 230 500 35 35 No
X6CrNiTi18-10 1.4541 +AT (Cold 200 235 500 35 30 Yes
finished)
 +AT (Hot 180 215 460 35 30 Yes
finished)
X6CrNiNb18-10 1.4550 +AT 205 240 510 35 30 Yes
X1CrNi25-21 1.4335 +AT 180 210 470 45 40 Yes
X2CrNiMo17-12-2 1.4404 +AT 190 225 490 40 30 Yes
d
X5CrNiMo17-12-2 1.4401 +AT 205 240 510 40 30
Yes
X1CrNiMoN25-22-2 1.4466 +AT 260 295 540 40 30 -
X6CrNiMoTi17-12-2 1.4571 +AT (Cold 210 245 500 35 30 Yes
finished)
 +AT(Hot 190 225 490 35 30 Yes
finished)
X6CrNiMoNb17-12-22 1.4580 +AT 215 250 510 35 30 Yes
X2CrNiMoN17-13-3 1.4429 +AT 295 330 580 35 30 Yes
d
X3CrNiMo17-13-3 1.4436 +AT 205 240 510 40 30
Yes
X2CrNiMo18-14-3 1.4435 +AT 190 225 490 40 35 Yes
X2CrNiMoN17-13-5 1.4439 +AT 285 315 580 35 30 Yes
X1NiCrMoCu31-27-4 1.4563 +AT 215 245 500 40 35 Yes
X1NiCrMoCu25-20-5 1.4539 +AT 230 250 520 35 30 Yes
X1CrNiMoCuN20-18-7 1.4547 +AT 300 340 650 35 30 Yes
X1NICrMoCuN25-20- 1.4529 +AT 270 310 600 35 - Yes
7
X2NiCrAlTi32-20 1.4558 +AT 180 210 450 35 - -
2
a
1 MPa = 1 N/mm

b
When tested in accordance with EN ISO 3651-2.
c
l = longitudinal, t = transverse.
d
Normally not fulfilled in the sensitized condition.

16

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SIST EN 10297-2:2006
EN 10297-2:2005 (E)
Table 8 — Delivery conditions and mechanical properties for tubes made from austenitic-ferritic
corrosion resistant steels
Steel grade Delivery Proof strength Tensile Elongation Resistance to
condition strength A intergranular


b
min min min
corrosion
a
MPa MPa %
c c
Steel name Steel
R R R
  l  t
p0,2 p1,0 m
number
Austenitic-ferritic steels
X3CrNiMoN27-5-2 1.4460 +AT 460 470 620 20 - Yes
e
d d d
X2CrNiMoN29-7-2 1.4477 +AT 25 25 Yes
550 560 750
X2CrNiMoN22-5-3 1.4462 +AT 450 460 640 22 - Y
...