SIST EN 10296-2:2006

Welded 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 welded tubes, of circular cross section, made from stainless steels, for mechanical and general engineering purposes.

Geschweißte kreisförmige Stahlrohre für den Maschinenbau und allgemeine technische Anwendungen - Technische Lieferbedingungen - Teil 2: Nichtrostende Stähle

Dieser Teil der EN 10296 enthält die technischen Lieferbedingungen für geschweißte Rohre mit kreisförmigem Querschnitt aus nichtrostendem Stahl, die für die Anwendung im Maschinenbau und für allgemeine technische Anwendungen bestimmt sind.

Tubes ronds soudés 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 10296 spécifie les conditions techniques des tubes soudés de section circulaire en acier inoxydable pour utilisation en mécanique générale et en construction mécanique.

Okrogle varjene 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 10296-2:2005 - Welded circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel

Relations

• Corrected By: SIST EN 10296-2:2006/AC:2007 - Welded 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 10296-2:2006
01-marec-2006
Okrogle varjene jeklene cevi za strojništvo in splošno uporabo v tehniki – Tehnični
dobavni pogoji – 2. del: Nerjavna jekla
Welded circular steel tubes for mechanical and general engineering purposes - Technical
delivery conditions - Part 2: Stainless steel
Geschweißte kreisförmige Stahlrohre für den Maschinenbau und allgemeine technische
Anwendungen - Technische Lieferbedingungen - Teil 2: Nichtrostende Stähle
Tubes ronds soudés 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 10296-2:2005
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST EN 10296-2:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 10296-2:2006

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SIST EN 10296-2:2006
EUROPEAN STANDARD
EN 10296-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 77.140.75

English Version
Welded circular steel tubes for mechanical and general
engineering purposes - Technical delivery conditions - Part 2:
Stainless steel
Tubes ronds soudés en acier pour utilisation en mécanique Geschweißte kreisförmige Stahlrohre für den
générale et en construction mécanique - Conditions Maschinenbau und allgemeine technische Anwendungen -
techniques de livraison - Partie 2: Tubes en acier Technische Lieferbedingungen - Teil 2: Nichtrostende
inoxydable Stähle
This European Standard was approved by CEN on 4 April 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 10296-2:2005: E
worldwide for CEN national Members.

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SIST EN 10296-2:2006
EN 10296-2:2005 (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.7
7 Manufacturing process.8
8 Requirements .9
9 Inspection and testing .18
10 Sampling.20
11 Test methods.22
12 Marking .24
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 .30
Bibliography.31

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
Foreword
This document (EN 10296-2:2005) 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 10296 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 10297: Seamless circular steel tubes for mechanical and general engineering purposes — Technical
delivery conditions.
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 10296-2:2006
EN 10296-2:2005 (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 and 1.4854, the compositions of
which are given in Tables 1 and 2.
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:

Grade 1.4362
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 European Standard 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 10296-2:2006
EN 10296-2:2005 (E)
1 Scope
This European Standard specifies the technical delivery conditions for welded 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 910, Destructive tests on welds in metallic materials - Bend tests
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 10246-7, 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 10246-8, Non-destructive testing of steel tubes – Part 8: Automatic ultrasonic testing of the weld seam of
electric welded steel tubes for the detection of longitudinal imperfections
EN 10246-9, Non-destructive testing of steel tubes – Part 9: Automatic ultrasonic testing of the weld seam of
submerged arc welded steel tubes for the detection of longitudinal and/or transverse imperfections
EN 10246-10, Non-destructive testing of steel tubes – Part 10: Radiographic testing of the weld seam of automatic
fusion arc welded steel tubes for the detection of 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 steel structural hollow sections - Symbols and definitions of terms for use
in product standards.
CR 10260:1998, Designation system for steel – Additional symbols
5

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
EN ISO 377, Steel and steel products – Location and preparation of samples and test pieces for mechanical testing
(ISO 377:1997)
EN ISO 8491, Metallic materials – Tube (in full section) - Bend test (ISO 8491:1998)
EN ISO 8492, Metallic materials – Tube - Flattening test (ISO 8492:1998)
EN ISO 8493, Metallic materials – Tube - Drift expanding test (ISO 8493:1998)
EN ISO 8496, Metallic materials – Tube - Ring tensile test (ISO 8496:1998)
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)
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 and 2 are stainless
steels.
5.2 Designation
For tubes covered by this document the steel designation consists of:
 number of this document (EN 10296-2);
plus either:
 steel name in accordance with EN 10027-1 and CR 10260; or
 steel number allocated in accordance with EN 10027-2.
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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
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);
d) steel designation (see 5.2);
e) delivery condition for austenitic and austenitic-ferritic grades (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) weld bead finish (see 7.2.1);
3) pickled tube (see 7.2.2);
4) controlled sulphur content (see Table 1);
5) non-destructive testing of the weld (see 8.4.2);
6) leak tightness test (see 8.4.2);
7) straightness (see 8.5);
8) random lengths (see 8.7.2);
9) exact lengths (see 8.7.2);
j) outside diameter tolerances (see 8.7.3.1)
k) specific inspection and testing (see 9.1);
l) test report 2.2 (see 9.2.1);
m) inspection document, 3.2 (see 9.2.1);
n) leak tightness test method (see 11.7.1).
6.3 Example of an order
Fifteen tonnes of welded steel tubes with a specified outside diameter of 60,3 mm, a specified wall thickness of
3,2 mm, in accordance with EN 10296-2, made from steel grade 1.4301, solution annealed, (supplied in 6 m
standard length) and with a test report 2.2 (option 12) in accordance with EN 10204.
15 t – Tube - 60,3 x 3.2 - EN 10296-2 - 1.4301+AT- option 12
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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
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 produced from hot or cold rolled strip or plate/sheet, longitudinally welded across the
abutting edges, by a continuous automatic process with or without the addition of filler metal. The welding process
is at the discretion of the manufacturer.
Acceptable process routes and surface conditions are given in Table A.1. The choice of process route, base
material, hot or cold rolled feedstock and the surface condition, is at 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.
Tubes shall be delivered with one of the following weld bead finishes:
 Finish A: Internal and external weld bead not removed;
 Finish B: External weld bead removed internal weld bead not removed;
 Finish C: Internal and external weld bead rolled or removed.
Finish A shall not be used for high frequency (HF) welded tube.
The weld bead finish is at the discretion of the manufacturer unless Option 2 is specified.
Option 2: The weld bead finish; A, B or C is specified by the purchaser.
The finished tubes shall not include the welds used to join the lengths of strip prior to forming the tube. However
jointers are permitted when the purchaser specifies lengths in excess of the production maximum, if agreed at the
time of enquiry and order.

7.2.2 Tubes produced in accordance with 7.2.1 shall be delivered in the following delivery conditions:
- ferritic steels: as welded (+AR) or annealed (+A), at the discretion of the manufacturer;
- austenitic and austenitic-ferritic steels: as-welded (+AR) or solution annealed (+AT), as specified by the purchaser
(see 6.1).
See Annex B for guidance on heat treatment following fabrication and further processing.
When Option 3 is specified, the tubes shall be supplied pickled.
Option 3: Tubes shall be supplied pickled.
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.
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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
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 conform to the requirements of this
document.
In addition, the general technical delivery requirements specified in EN 10021 shall apply.
8.2 Chemical composition
The cast analysis reported by the steel producer shall apply and shall conform to the requirements of Tables 1 or 2,
as appropriate.
Elements not included in Tables 1 and 2 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 3.
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 standard cannot be welded unless specialised techniques are
employed by specialist welders.
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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
Table 1 — Chemical composition (cast analysis) for tubes made from ferritic, austenitic and austenitic-ferritic corrosion resistant steel, in % by mass
Steel grade C Si Mn P S Cr Mo Ni Cu N Nb Ti
Steel name Steel max. max. max. max. max. min. max. min max. min. max. min. max. min. max. min. max. min. max.
number
Ferritic steels
X2CrNi12 1.4003 0,030 1,00 1,500,0400,01510,5`12,5 0,301,00  0,030
X2CrTi12 1.4512 0,030 1,00 1,000,0400,01510,512,5    0,030  6x (C+N) 0,65
a
X6Cr17 1.4016 0,08 1,00 1,000,0400,01516,018,0
a b
X3CrTi17 1.4510 0,05 1,00 1,000,0400,01516,018,0     [4x 0,80
(C+N)
+0,15
b
X2CrMoTi18-2 1.4521 0,025 1,00 1,000,0400,01517,020,01,802,50   0,030  4x (C+N) 0,80
+0, 15
X6CrMoNb17-1 1.4526 0,08 1,00 1,000,0400,01516,018,00,801,40   0,040 7x(C+1,00
N) +
0,10
X2CrTiNb18 1.4509 0,030 1,00 1,000,0400,01517,518,5    3xC + 1,00 0,10 0,69
0,30
Austenitic steels
X2CrNiN18-7 1.4318 0,030 1,00 2,000,0450,01516,518,5 6,0 8,0  0,10 0,20
a
X2CrNi18-9 1.4307 0,030 1,00 2,000,0450,01517,519,5 8,0 10,5  0,11
a
X2CrNi19-11 1.4306 0,030 1,00 2,000,0450,01518,020,0 10,012,0  0,11
a
X2CrNiN18-10 1.4311 0,030 1,00 2,000,0450,01517,019,5 8,5 11,5  0,12 0,22
a
X5CrNi18-10 1.4301 0,07 1,00 2,000,0450,01517,019,5 8,0 10,5  0,11
a
X6CrNiTi18-10 1.4541 0,08 1,00 2,000,0450,01517,019,0 9,0 12,0    5xC 0,70
X6CrNiNb18-10 1.4550 0,08 1,00 2,000,0450,01517,019,0 9,0 12,0   10xC 1,00
a
X2CrNiMo17-12-2 1.4404 0,030 1,00 2,000,0450,015 16,5 18,5 2,00 2,50 10,0 13,0  0,11
a
X5CrNiMo17-12-2 1.4401 0,07 1,00 2,000,0450,015 16,5 18,5 2,00 2,50 10,0 13,0  0,11
a
X6CrNiMoTi17-12-2 1.4571 0,08 1,00 2,000,0450,01516,518,52,002,5010,513,5    5xC 0,70
a
X2CrNiMo17-12-3 1.4432 0,030 1,00 2,000,0450,015 16,5 18,5 2,50 3,00 10,5 13,0  0,11
X2CrNiMoN17-13-3 1.4429 0,030 1,00 2,000,0450,01516,518,52,503,0011,014,0  0,12 0,22
a
X3CrNiMo17-13-3 1.4436 0,05 1,00 2,000,0450,015 16,5 18,5 2,50 3,00 10,5 13,0  0,11
a
X2CrNiMo18-14-3 1.4435 0,030 1,00 2,000,0450,015 17,0 19,0 2,50 3,00 12,5 15,0  0,11
X2CrNiMoN17-13-5 1.4439 0,030 1,00 2,000,0450,01516,518,54,0 5,0 12,514,5  0,12 0,22
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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
Table 1 — Chemical composition (cast analysis) for tubes made from ferritic, austenitic and austenitic-ferritic corrosion resistant steel, in %by mass
(concluded)
Steel grade C Si Mn P S Cr Mo Ni Cu N Nb Ti
Steel name Steel max. max. max. max. max. min max. min max. min. max. min. max. min. max. min. max min. max.
number
X1NiCrMoCu25-20-5 1.4539 0,020 0,70 2,000,0300,01019,021,04,0 5,0 24,026,0 1,202,00 0,15
X1CrNiMoCuN20-18-7 1.4547 0,020 0,70 1,000,0300,01019,520,5 6,0 7,0 17,518,5 0,501,00 0,18 0,25
Austenitic ferritic steels
c
1.4362 0,030 1,00 2,00 0,035 0,015 22,0 24,0 0,10 0,60 3,5 5,5 0,10 0,60 0,05 0,20
X2CrNiN23-4
X2CrNiMoN22-5-3 1.4462 0,030 1,00 2,000,0350,01521,023,02,503,5 4,5 6,5  0,10 0,22
X2CrNiMoN25-7-4 1.4410 0,030 1,00 2,000,0350,01524,026,03,0 4,5 6,0 8,0  0,24 0,35
a
Option 4: a controlled sulfur 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

c
Patented steel grade.
11

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)

Table 2 — Chemical composition (Cast analysis) for tubes made from austenitic heat resisting steel, in % by mass
Steel grade C Si Mn P S Cr Ni N Ce
Steel name Steel min. max. min. max. max. max. max. min. max. min. max. min. max. min. max.
number
X15CrNiSi20-12 1.4828 0,20 1,50 2,50 2,00 0,045 0,015 19,0 21,0 11,0 13,0 0,11
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 0,03 0,08
X12CrNi23-13 1.4833 0,15 1,00 2,00 0,045 0,015 22,0 24,0 12,0 14,0 0,11
X8CrNi25-21 1.4845 0,10 1,50 2,00 0,045 0,015 24,0 26,0 19,0 22,0 0,11
X6CrNiSiNCe19-10 1.4818 0,04 0,08 1,00 2,00 1,00 0,045 0,015 18,0 20,0 9,0 11,0 0,12 0,20 0,03 0,08
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 0,03 0,08

a
Patented steel grade.

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)

Table 3 — Permissible deviations of the product analysis from the specified limits on cast analysis given
in Table 1 and Table 2
Element Limiting values for the Permissible deviation of the
cast analysis in product analysis
accordance with
Tables 1 and 2
% by mass
% by mass
C + 0,005
≤ 0,030
± 0,010
> 0,03 ≤ 0,20
Si ≤ 1,00 + 0,05
>1,00 ≤2,50 ± 0,10
Mn + 0,04
≤ 2,00
P + 0,005
≤ 0,045
S + 0,003
≤ 0,015
± 0,005
> 0,015 ≤ 0,030
Cr ± 0,15
≥ 10,5 ≤ 15,0
± 0,20
> 15,0 ≤ 20,0

> 20,0 ≤ 26,0 ± 0,25
Mo > 0,80 < 1,75
± 0,05
≥ 1,75 ≤ 7,0 ± 0,10
Ni ≤ 1,00 ± 0,03
≥4,5 ≤ 10,0 ± 0,10
> 10,0 ≤ 20,0 ± 0,15

> 20,0 ≤ 36,0 ± 0,20
Cu
≤ 1,00 ± 0,07
>1,00 ≤ 2,00 ± 0,10
N ≤ 0,35 ± 0,01
Nb ≤ 1,00 ± 0,05
Ti
≤ 0,80 ± 0,05
8.3 Mechanical properties
The mechanical properties of the tubes covered by this document shall conform to the requirements in Tables 4
and 5 and, those tests specified in Clause 11, as applicable.


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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
Table 4 — Mechanical properties for tubes made from ferritic or austenitic
or austenitic-ferritic corrosion resistant steels in thicknesses ≤≤≤≤ 30 mm
Steel Grade Resistance to
intergranular
Proof Tensile Elongation
a
corrosion
strength strength A
min min min
*) *) %
MPa MPa

b
Steel Name Steel b
R R R T
p0,2 p1,0 m l
Number
Ferritic steels
X2CrNi12 1.4003 280 290 450 20 18 No
X2CrTi12 1.4512 210 220 380 25 23 No
c
X6Cr17 1.4016 240 250 430 20 18
Yes
X3CrTi17 1.4510 230 240 420 23 21 Yes
X2CrMoTi18-2 1.4521 280 290 400 20 20 Yes
X6CrMoNb17-1 1.4526 280 290 480 25 23 Yes
X2CrTiNb18 1,4509 230 240 430 18 16 Yes
Austenitic steels
X2CrNiN18-7 1.4318 330 370 630 45 45 Yes
X2CrNi18-9 1.4307 180 215 470 40 35 Yes
X2CrNi19-11 1.4306 180 215 460 40 35 Yes
X2CrNiN18-10 1.4311 270 305 550 35 30 Yes

c
X5CrNi18-10 1.4301 195 230 500 40 35
Yes
X6CrNiTi18-10 1.4541 200 235 500 35 30 Yes
X6CrNiNb18-10 1.4550 205 240 510 35 30 Yes
X2CrNiMo17-12-2 1.4404 190 225 490 40 30 Yes

c
X5CrNiMo17-12-2 1.4401 205 240 510 40 30
Yes
X6CrNiMoTi17-12-2 1.4571 210 245 510 35 30 Yes
X2CrNiMo17-12-3 1.4432 190 225 490 40 30 Yes
X2CrNiMo17-13-3 1.4429 295 330 580 35 30 Yes
c
X3CrNiMo17-3-3 1.4436 205 240 510 40 30
Yes
X2CrNiMo18-14-3 1.4435 190 225 490 40 35 Yes
X2CrNiMoN17-13-5 1.4439 285 315 580 35 30 Yes
X1NiCrMoCu25-20-5 1.4539 220 250 520 35 30 Yes
X1CrNiMoCuN20-18-7 1.4547 300 340 650 35 30 Yes
Austenitic -ferritic steels
d
1.4362 Yes
400 600 20
X2CrNiN23-4
X2CrNiMoN27-5-2 1.4462 450 700 22 - Yes
X2CrNiMoN25-7-4 1.4410 550 800 15 Yes
2
*)
1 MPa = 1 N/mm

a
When tested in accordance with EN ISO 3651-2.

b
l = longitudinal, t = transverse

c
Normally not fulfilled in the sensitized or as-welded condition.

d
Patented steel grade.

14

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
Table 5 — Mechanical properties for tubes made from austenitic heat resistant steels in the solution
annealed (+AT) condition
Steel grade Proof strength Tensile Elongation
strength
A

min min
min
MPa *) MPa * %
a b a b
Steel name Steel R R R
l t
p 0,2 p 1,0 m
number
X15CrNiSi20-12 1.4828 230 270 550 30 30
X9CrNiSiNCe21-11-2 1.4835 310 350 650 40 40
X12CrNi23-13 1.4833 210 250 500 35 35
X8CrNi25-21 1.4845 210 250 500 35 35
X6CrNiSiNCe19-10 1.4818 290 330 600 40 40
c
1.4854 300 340 650 40 40
X6NiCrSiNCe35-25
* 2
1 MPa = 1 N/mm
a
l = longitudinal, t = transverse.
b Elongation 20% min for wall thickness ≤ 35 mm after cold deformation.
c
Patented steel grade.
8.4 Appearance and soundness
8.4.1 Appearance
8.4.1.1 Tubes shall be free from external and internal surface defects that can be detected by visual
examination.
8.4.1.2 The internal and external surface finish of the tubes shall be typical of the manufacturing process
and, where applicable, the heat treatment employed. The finish and surface condition shall be such that any
surface imperfections requiring dressing can be identified.
8.4.1.3 It shall be permissible to remove surface imperfections only by grinding or machining provided that,
after so doing, the tube 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.
8.4.1.4 Surface imperfections which encroach on the minimum wall thickness shall be considered defects
and tubes containing these shall be deemed not to conform to this document.
8.4.1.5 For tubes with an outside diameter D greater than or equal to 114,3 mm, repair of the weld shall be
permitted, provided that a compatible filler metal is used. Such weld repairs shall not exceed 20 % of the seam
length.
The repair welding shall be carried out according to a written welding procedure specification (WPS).
The repaired tube shall conform to all the requirements of this document.
15

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
8.4.2 Soundness
When Option 5 is specified, the seam weld of tubes supplied with specific inspection and testing shall be
subjected to non-destructive testing.
Option 5 Non-destructive testing of the weld for the full length of each tube shall be carried out in
accordance with 11.10.
When Option 6 i
...

SLOVENSKI STANDARD
SIST EN 10296-2:2006
01-marec-2006
2NURJOHYDUMHQHMHNOHQHFHYL]DVWURMQLãWYRLQVSORãQRXSRUDERYWHKQLNL±7HKQLþQL
GREDYQLSRJRML±GHO1HUMDYQDMHNOD
Welded circular steel tubes for mechanical and general engineering purposes - Technical
delivery conditions - Part 2: Stainless steel
Geschweißte kreisförmige Stahlrohre für den Maschinenbau und allgemeine technische
Anwendungen - Technische Lieferbedingungen - Teil 2: Nichtrostende Stähle
Tubes ronds soudés 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 10296-2:2005
ICS:
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
SIST EN 10296-2:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 10296-2:2006

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SIST EN 10296-2:2006
EUROPEAN STANDARD
EN 10296-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 77.140.75

English Version
Welded circular steel tubes for mechanical and general
engineering purposes - Technical delivery conditions - Part 2:
Stainless steel
Tubes ronds soudés en acier pour utilisation en mécanique Geschweißte kreisförmige Stahlrohre für den
générale et en construction mécanique - Conditions Maschinenbau und allgemeine technische Anwendungen -
techniques de livraison - Partie 2: Tubes en acier Technische Lieferbedingungen - Teil 2: Nichtrostende
inoxydable Stähle
This European Standard was approved by CEN on 4 April 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 10296-2:2005: E
worldwide for CEN national Members.

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SIST EN 10296-2:2006
EN 10296-2:2005 (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.7
7 Manufacturing process.8
8 Requirements .9
9 Inspection and testing .18
10 Sampling.20
11 Test methods.22
12 Marking .24
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 .30
Bibliography.31

2

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
Foreword
This document (EN 10296-2:2005) 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 10296 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 10297: Seamless circular steel tubes for mechanical and general engineering purposes — Technical
delivery conditions.
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 10296-2:2006
EN 10296-2:2005 (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 and 1.4854, the compositions of
which are given in Tables 1 and 2.
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:

Grade 1.4362
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 European Standard 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 10296-2:2006
EN 10296-2:2005 (E)
1 Scope
This European Standard specifies the technical delivery conditions for welded 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 910, Destructive tests on welds in metallic materials - Bend tests
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 10246-7, 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 10246-8, Non-destructive testing of steel tubes – Part 8: Automatic ultrasonic testing of the weld seam of
electric welded steel tubes for the detection of longitudinal imperfections
EN 10246-9, Non-destructive testing of steel tubes – Part 9: Automatic ultrasonic testing of the weld seam of
submerged arc welded steel tubes for the detection of longitudinal and/or transverse imperfections
EN 10246-10, Non-destructive testing of steel tubes – Part 10: Radiographic testing of the weld seam of automatic
fusion arc welded steel tubes for the detection of 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 steel structural hollow sections - Symbols and definitions of terms for use
in product standards.
CR 10260:1998, Designation system for steel – Additional symbols
5

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
EN ISO 377, Steel and steel products – Location and preparation of samples and test pieces for mechanical testing
(ISO 377:1997)
EN ISO 8491, Metallic materials – Tube (in full section) - Bend test (ISO 8491:1998)
EN ISO 8492, Metallic materials – Tube - Flattening test (ISO 8492:1998)
EN ISO 8493, Metallic materials – Tube - Drift expanding test (ISO 8493:1998)
EN ISO 8496, Metallic materials – Tube - Ring tensile test (ISO 8496:1998)
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)
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 and 2 are stainless
steels.
5.2 Designation
For tubes covered by this document the steel designation consists of:
 number of this document (EN 10296-2);
plus either:
 steel name in accordance with EN 10027-1 and CR 10260; or
 steel number allocated in accordance with EN 10027-2.
6

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
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);
d) steel designation (see 5.2);
e) delivery condition for austenitic and austenitic-ferritic grades (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) weld bead finish (see 7.2.1);
3) pickled tube (see 7.2.2);
4) controlled sulphur content (see Table 1);
5) non-destructive testing of the weld (see 8.4.2);
6) leak tightness test (see 8.4.2);
7) straightness (see 8.5);
8) random lengths (see 8.7.2);
9) exact lengths (see 8.7.2);
j) outside diameter tolerances (see 8.7.3.1)
k) specific inspection and testing (see 9.1);
l) test report 2.2 (see 9.2.1);
m) inspection document, 3.2 (see 9.2.1);
n) leak tightness test method (see 11.7.1).
6.3 Example of an order
Fifteen tonnes of welded steel tubes with a specified outside diameter of 60,3 mm, a specified wall thickness of
3,2 mm, in accordance with EN 10296-2, made from steel grade 1.4301, solution annealed, (supplied in 6 m
standard length) and with a test report 2.2 (option 12) in accordance with EN 10204.
15 t – Tube - 60,3 x 3.2 - EN 10296-2 - 1.4301+AT- option 12
7

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
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 produced from hot or cold rolled strip or plate/sheet, longitudinally welded across the
abutting edges, by a continuous automatic process with or without the addition of filler metal. The welding process
is at the discretion of the manufacturer.
Acceptable process routes and surface conditions are given in Table A.1. The choice of process route, base
material, hot or cold rolled feedstock and the surface condition, is at 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.
Tubes shall be delivered with one of the following weld bead finishes:
 Finish A: Internal and external weld bead not removed;
 Finish B: External weld bead removed internal weld bead not removed;
 Finish C: Internal and external weld bead rolled or removed.
Finish A shall not be used for high frequency (HF) welded tube.
The weld bead finish is at the discretion of the manufacturer unless Option 2 is specified.
Option 2: The weld bead finish; A, B or C is specified by the purchaser.
The finished tubes shall not include the welds used to join the lengths of strip prior to forming the tube. However
jointers are permitted when the purchaser specifies lengths in excess of the production maximum, if agreed at the
time of enquiry and order.

7.2.2 Tubes produced in accordance with 7.2.1 shall be delivered in the following delivery conditions:
- ferritic steels: as welded (+AR) or annealed (+A), at the discretion of the manufacturer;
- austenitic and austenitic-ferritic steels: as-welded (+AR) or solution annealed (+AT), as specified by the purchaser
(see 6.1).
See Annex B for guidance on heat treatment following fabrication and further processing.
When Option 3 is specified, the tubes shall be supplied pickled.
Option 3: Tubes shall be supplied pickled.
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

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
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 conform to the requirements of this
document.
In addition, the general technical delivery requirements specified in EN 10021 shall apply.
8.2 Chemical composition
The cast analysis reported by the steel producer shall apply and shall conform to the requirements of Tables 1 or 2,
as appropriate.
Elements not included in Tables 1 and 2 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 3.
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 standard cannot be welded unless specialised techniques are
employed by specialist welders.
9

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
Table 1 — Chemical composition (cast analysis) for tubes made from ferritic, austenitic and austenitic-ferritic corrosion resistant steel, in % by mass
Steel grade C Si Mn P S Cr Mo Ni Cu N Nb Ti
Steel name Steel max. max. max. max. max. min. max. min max. min. max. min. max. min. max. min. max. min. max.
number
Ferritic steels
X2CrNi12 1.4003 0,030 1,00 1,500,0400,01510,5`12,5 0,301,00  0,030
X2CrTi12 1.4512 0,030 1,00 1,000,0400,01510,512,5    0,030  6x (C+N) 0,65
a
X6Cr17 1.4016 0,08 1,00 1,000,0400,01516,018,0
a b
X3CrTi17 1.4510 0,05 1,00 1,000,0400,01516,018,0     [4x 0,80
(C+N)
+0,15
b
X2CrMoTi18-2 1.4521 0,025 1,00 1,000,0400,01517,020,01,802,50   0,030  4x (C+N) 0,80
+0, 15
X6CrMoNb17-1 1.4526 0,08 1,00 1,000,0400,01516,018,00,801,40   0,040 7x(C+1,00
N) +
0,10
X2CrTiNb18 1.4509 0,030 1,00 1,000,0400,01517,518,5    3xC + 1,00 0,10 0,69
0,30
Austenitic steels
X2CrNiN18-7 1.4318 0,030 1,00 2,000,0450,01516,518,5 6,0 8,0  0,10 0,20
a
X2CrNi18-9 1.4307 0,030 1,00 2,000,0450,01517,519,5 8,0 10,5  0,11
a
X2CrNi19-11 1.4306 0,030 1,00 2,000,0450,01518,020,0 10,012,0  0,11
a
X2CrNiN18-10 1.4311 0,030 1,00 2,000,0450,01517,019,5 8,5 11,5  0,12 0,22
a
X5CrNi18-10 1.4301 0,07 1,00 2,000,0450,01517,019,5 8,0 10,5  0,11
a
X6CrNiTi18-10 1.4541 0,08 1,00 2,000,0450,01517,019,0 9,0 12,0    5xC 0,70
X6CrNiNb18-10 1.4550 0,08 1,00 2,000,0450,01517,019,0 9,0 12,0   10xC 1,00
a
X2CrNiMo17-12-2 1.4404 0,030 1,00 2,000,0450,015 16,5 18,5 2,00 2,50 10,0 13,0  0,11
a
X5CrNiMo17-12-2 1.4401 0,07 1,00 2,000,0450,015 16,5 18,5 2,00 2,50 10,0 13,0  0,11
a
X6CrNiMoTi17-12-2 1.4571 0,08 1,00 2,000,0450,01516,518,52,002,5010,513,5    5xC 0,70
a
X2CrNiMo17-12-3 1.4432 0,030 1,00 2,000,0450,015 16,5 18,5 2,50 3,00 10,5 13,0  0,11
X2CrNiMoN17-13-3 1.4429 0,030 1,00 2,000,0450,01516,518,52,503,0011,014,0  0,12 0,22
a
X3CrNiMo17-13-3 1.4436 0,05 1,00 2,000,0450,015 16,5 18,5 2,50 3,00 10,5 13,0  0,11
a
X2CrNiMo18-14-3 1.4435 0,030 1,00 2,000,0450,015 17,0 19,0 2,50 3,00 12,5 15,0  0,11
X2CrNiMoN17-13-5 1.4439 0,030 1,00 2,000,0450,01516,518,54,0 5,0 12,514,5  0,12 0,22
10

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
Table 1 — Chemical composition (cast analysis) for tubes made from ferritic, austenitic and austenitic-ferritic corrosion resistant steel, in %by mass
(concluded)
Steel grade C Si Mn P S Cr Mo Ni Cu N Nb Ti
Steel name Steel max. max. max. max. max. min max. min max. min. max. min. max. min. max. min. max min. max.
number
X1NiCrMoCu25-20-5 1.4539 0,020 0,70 2,000,0300,01019,021,04,0 5,0 24,026,0 1,202,00 0,15
X1CrNiMoCuN20-18-7 1.4547 0,020 0,70 1,000,0300,01019,520,5 6,0 7,0 17,518,5 0,501,00 0,18 0,25
Austenitic ferritic steels
c
1.4362 0,030 1,00 2,00 0,035 0,015 22,0 24,0 0,10 0,60 3,5 5,5 0,10 0,60 0,05 0,20
X2CrNiN23-4
X2CrNiMoN22-5-3 1.4462 0,030 1,00 2,000,0350,01521,023,02,503,5 4,5 6,5  0,10 0,22
X2CrNiMoN25-7-4 1.4410 0,030 1,00 2,000,0350,01524,026,03,0 4,5 6,0 8,0  0,24 0,35
a
Option 4: a controlled sulfur 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

c
Patented steel grade.
11

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)

Table 2 — Chemical composition (Cast analysis) for tubes made from austenitic heat resisting steel, in % by mass
Steel grade C Si Mn P S Cr Ni N Ce
Steel name Steel min. max. min. max. max. max. max. min. max. min. max. min. max. min. max.
number
X15CrNiSi20-12 1.4828 0,20 1,50 2,50 2,00 0,045 0,015 19,0 21,0 11,0 13,0 0,11
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 0,03 0,08
X12CrNi23-13 1.4833 0,15 1,00 2,00 0,045 0,015 22,0 24,0 12,0 14,0 0,11
X8CrNi25-21 1.4845 0,10 1,50 2,00 0,045 0,015 24,0 26,0 19,0 22,0 0,11
X6CrNiSiNCe19-10 1.4818 0,04 0,08 1,00 2,00 1,00 0,045 0,015 18,0 20,0 9,0 11,0 0,12 0,20 0,03 0,08
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 0,03 0,08

a
Patented steel grade.

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)

Table 3 — Permissible deviations of the product analysis from the specified limits on cast analysis given
in Table 1 and Table 2
Element Limiting values for the Permissible deviation of the
cast analysis in product analysis
accordance with
Tables 1 and 2
% by mass
% by mass
C + 0,005
≤ 0,030
± 0,010
> 0,03 ≤ 0,20
Si ≤ 1,00 + 0,05
>1,00 ≤2,50 ± 0,10
Mn + 0,04
≤ 2,00
P + 0,005
≤ 0,045
S + 0,003
≤ 0,015
± 0,005
> 0,015 ≤ 0,030
Cr ± 0,15
≥ 10,5 ≤ 15,0
± 0,20
> 15,0 ≤ 20,0

> 20,0 ≤ 26,0 ± 0,25
Mo > 0,80 < 1,75
± 0,05
≥ 1,75 ≤ 7,0 ± 0,10
Ni ≤ 1,00 ± 0,03
≥4,5 ≤ 10,0 ± 0,10
> 10,0 ≤ 20,0 ± 0,15

> 20,0 ≤ 36,0 ± 0,20
Cu
≤ 1,00 ± 0,07
>1,00 ≤ 2,00 ± 0,10
N ≤ 0,35 ± 0,01
Nb ≤ 1,00 ± 0,05
Ti
≤ 0,80 ± 0,05
8.3 Mechanical properties
The mechanical properties of the tubes covered by this document shall conform to the requirements in Tables 4
and 5 and, those tests specified in Clause 11, as applicable.


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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
Table 4 — Mechanical properties for tubes made from ferritic or austenitic
or austenitic-ferritic corrosion resistant steels in thicknesses ≤≤≤≤ 30 mm
Steel Grade Resistance to
intergranular
Proof Tensile Elongation
a
corrosion
strength strength A
min min min
*) *) %
MPa MPa

b
Steel Name Steel b
R R R T
p0,2 p1,0 m l
Number
Ferritic steels
X2CrNi12 1.4003 280 290 450 20 18 No
X2CrTi12 1.4512 210 220 380 25 23 No
c
X6Cr17 1.4016 240 250 430 20 18
Yes
X3CrTi17 1.4510 230 240 420 23 21 Yes
X2CrMoTi18-2 1.4521 280 290 400 20 20 Yes
X6CrMoNb17-1 1.4526 280 290 480 25 23 Yes
X2CrTiNb18 1,4509 230 240 430 18 16 Yes
Austenitic steels
X2CrNiN18-7 1.4318 330 370 630 45 45 Yes
X2CrNi18-9 1.4307 180 215 470 40 35 Yes
X2CrNi19-11 1.4306 180 215 460 40 35 Yes
X2CrNiN18-10 1.4311 270 305 550 35 30 Yes

c
X5CrNi18-10 1.4301 195 230 500 40 35
Yes
X6CrNiTi18-10 1.4541 200 235 500 35 30 Yes
X6CrNiNb18-10 1.4550 205 240 510 35 30 Yes
X2CrNiMo17-12-2 1.4404 190 225 490 40 30 Yes

c
X5CrNiMo17-12-2 1.4401 205 240 510 40 30
Yes
X6CrNiMoTi17-12-2 1.4571 210 245 510 35 30 Yes
X2CrNiMo17-12-3 1.4432 190 225 490 40 30 Yes
X2CrNiMo17-13-3 1.4429 295 330 580 35 30 Yes
c
X3CrNiMo17-3-3 1.4436 205 240 510 40 30
Yes
X2CrNiMo18-14-3 1.4435 190 225 490 40 35 Yes
X2CrNiMoN17-13-5 1.4439 285 315 580 35 30 Yes
X1NiCrMoCu25-20-5 1.4539 220 250 520 35 30 Yes
X1CrNiMoCuN20-18-7 1.4547 300 340 650 35 30 Yes
Austenitic -ferritic steels
d
1.4362 Yes
400 600 20
X2CrNiN23-4
X2CrNiMoN27-5-2 1.4462 450 700 22 - Yes
X2CrNiMoN25-7-4 1.4410 550 800 15 Yes
2
*)
1 MPa = 1 N/mm

a
When tested in accordance with EN ISO 3651-2.

b
l = longitudinal, t = transverse

c
Normally not fulfilled in the sensitized or as-welded condition.

d
Patented steel grade.

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
Table 5 — Mechanical properties for tubes made from austenitic heat resistant steels in the solution
annealed (+AT) condition
Steel grade Proof strength Tensile Elongation
strength
A

min min
min
MPa *) MPa * %
a b a b
Steel name Steel R R R
l t
p 0,2 p 1,0 m
number
X15CrNiSi20-12 1.4828 230 270 550 30 30
X9CrNiSiNCe21-11-2 1.4835 310 350 650 40 40
X12CrNi23-13 1.4833 210 250 500 35 35
X8CrNi25-21 1.4845 210 250 500 35 35
X6CrNiSiNCe19-10 1.4818 290 330 600 40 40
c
1.4854 300 340 650 40 40
X6NiCrSiNCe35-25
* 2
1 MPa = 1 N/mm
a
l = longitudinal, t = transverse.
b Elongation 20% min for wall thickness ≤ 35 mm after cold deformation.
c
Patented steel grade.
8.4 Appearance and soundness
8.4.1 Appearance
8.4.1.1 Tubes shall be free from external and internal surface defects that can be detected by visual
examination.
8.4.1.2 The internal and external surface finish of the tubes shall be typical of the manufacturing process
and, where applicable, the heat treatment employed. The finish and surface condition shall be such that any
surface imperfections requiring dressing can be identified.
8.4.1.3 It shall be permissible to remove surface imperfections only by grinding or machining provided that,
after so doing, the tube 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.
8.4.1.4 Surface imperfections which encroach on the minimum wall thickness shall be considered defects
and tubes containing these shall be deemed not to conform to this document.
8.4.1.5 For tubes with an outside diameter D greater than or equal to 114,3 mm, repair of the weld shall be
permitted, provided that a compatible filler metal is used. Such weld repairs shall not exceed 20 % of the seam
length.
The repair welding shall be carried out according to a written welding procedure specification (WPS).
The repaired tube shall conform to all the requirements of this document.
15

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SIST EN 10296-2:2006
EN 10296-2:2005 (E)
8.4.2 Soundness
When Option 5 is specified, the seam weld of tubes supplied with specific inspection and testing shall be
subjected to non-destructive testing.
Option 5 Non-destructive testing of the weld for the full length of each tube shall be carried out in
accorda
...