ISO 9328-7:2018
(Main)Steel flat products for pressure purposes — Technical delivery conditions — Part 7: Stainless steels
Steel flat products for pressure purposes — Technical delivery conditions — Part 7: Stainless steels
ISO 9328-7:2018 specifies requirements for flat products for pressure purposes made of stainless steels, including austenitic creep-resisting steels, in thicknesses as specified in Tables 7 to 10. The requirements and definitions of ISO 9328‑1 also apply to this document.
Produits plats en acier pour service sous pression — Conditions techniques de livraison — Partie 7: Aciers inoxydables
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INTERNATIONAL ISO
STANDARD 9328-7
Third edition
2018-02
Steel flat products for pressure
purposes — Technical delivery
conditions —
Part 7:
Stainless steels
Produits plats en acier pour service sous pression — Conditions
techniques de livraison —
Partie 7: Aciers inoxydables
Reference number
©
ISO 2018
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification and designation . 1
5 Information to be supplied by the purchaser. 2
5.1 Mandatory information . 2
5.2 Options . 2
5.3 Example for ordering . 2
6 Requirements . 2
6.1 Steelmaking process . 2
6.2 Delivery condition . 2
6.3 Chemical composition and chemical corrosion properties . 2
6.4 Mechanical properties . 2
6.5 Surface condition . 3
6.6 Internal soundness . 3
6.7 Post-weld heat treatment . 3
6.8 Dimensions and tolerances . 3
6.9 Calculation of mass . 3
6.10 Physical properties . 3
7 Inspection . 3
7.1 Types of inspection and inspection documents . 3
7.2 Tests to be carried out . 3
7.3 Re-tests . 3
8 Sampling . 4
8.1 Frequency of testing . 4
8.2 Selection and preparation of samples and test pieces . 4
9 Test methods . 4
10 Marking . 4
Annex A (informative) Steel designations in accordance with this document and
designation of comparable steel grades in national or regional standards .30
Annex B (informative) Guidelines for further treatment (including heat treatment)
in fabrication .32
Annex C (informative) Post-weld heat treatment.36
Annex D (informative) Preliminary reference data for the tensile strength of austenitic-
ferritic steels at elevated temperatures .39
Annex E (informative) Reference data on strength values for 1 % (plastic) creep strain and
creep rupture .40
Annex F (informative) Reference data on mechanical properties of austenitic steels at room
temperature and at low temperature .47
Annex G (informative) Reference data on some physical properties .49
Annex H (informative) Numbering of steel grades in accordance with ISO 15510 .56
Bibliography .58
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 10, Steel for
pressure purposes.
This third edition cancels and replaces the second edition (ISO 9328-7:2011), which has been technically
revised. The following changes have been made:
— the term “product thickness” has been replaced with “nominal thickness”;
— new steel grades X1CrNiSI18-5-4, X2CrCuNbTiV22-1, X2CrNiMoN21-9-1, X2CrMnNiN21-5-1 and
X2CrNiMnMoCuN24-4-3-2 and all their technical data have been added;
— the technical data in Table 5 have been revised;
— the technical data in Table 9 have been aligned with EN 10028-7.
A list of all the parts in the ISO 9328 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
Introduction
The International Organization for Standardization (ISO) draws attention to the fact that it is claimed
that compliance with this document may involve the use of patents concerning eight steel grades.
ISO takes no position concerning the evidence, validity and scope of this patent right. The holder of
this patent right has assured ISO that he/she is willing to negotiate licences under reasonable and
non-discriminatory terms and conditions with applicants throughout the world. In this respect, the
statement of the holder of this patent right is registered with ISO. Information may be obtained from
the following sources.
c
For steel grades 1.4162 (but also consider footnote in Table 4) and 1.4662 from:
Outokumpu Stainless AB
SE-77480 AVESTA, Sweden
For steel grades 1.4420 and 1.4622 from:
Outokumpu Oyj
FI-02200 Espoo, Finland
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights other than those identified above. ISO shall not be held responsible for identifying any or
all such patent rights.
INTERNATIONAL STANDARD ISO 9328-7:2018(E)
Steel flat products for pressure purposes — Technical
delivery conditions —
Part 7:
Stainless steels
1 Scope
This document specifies requirements for flat products for pressure purposes made of stainless steels,
including austenitic creep-resisting steels, in thicknesses as specified in Tables 7 to 10.
The requirements and definitions of ISO 9328-1 also apply to this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
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 9328-1:2018,Steel flat products for pressure purposes — Technical delivery conditions — Part 1:
General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 9328-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
3.1
cryogenic temperature
temperature lower than −75 °C used in the liquefaction of gases
4 Classification and designation
Shall be in accordance with ISO 9328-1.
NOTE 1 Information on the designatio
...
INTERNATIONAL ISO
STANDARD 9328-7
Third edition
2018-02
Steel flat products for pressure
purposes — Technical delivery
conditions —
Part 7:
Stainless steels
Produits plats en acier pour service sous pression — Conditions
techniques de livraison —
Partie 7: Aciers inoxydables
Reference number
©
ISO 2018
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification and designation . 1
5 Information to be supplied by the purchaser. 2
5.1 Mandatory information . 2
5.2 Options . 2
5.3 Example for ordering . 2
6 Requirements . 2
6.1 Steelmaking process . 2
6.2 Delivery condition . 2
6.3 Chemical composition and chemical corrosion properties . 2
6.4 Mechanical properties . 2
6.5 Surface condition . 3
6.6 Internal soundness . 3
6.7 Post-weld heat treatment . 3
6.8 Dimensions and tolerances . 3
6.9 Calculation of mass . 3
6.10 Physical properties . 3
7 Inspection . 3
7.1 Types of inspection and inspection documents . 3
7.2 Tests to be carried out . 3
7.3 Re-tests . 3
8 Sampling . 4
8.1 Frequency of testing . 4
8.2 Selection and preparation of samples and test pieces . 4
9 Test methods . 4
10 Marking . 4
Annex A (informative) Steel designations in accordance with this document and
designation of comparable steel grades in national or regional standards .30
Annex B (informative) Guidelines for further treatment (including heat treatment)
in fabrication .32
Annex C (informative) Post-weld heat treatment.36
Annex D (informative) Preliminary reference data for the tensile strength of austenitic-
ferritic steels at elevated temperatures .39
Annex E (informative) Reference data on strength values for 1 % (plastic) creep strain and
creep rupture .40
Annex F (informative) Reference data on mechanical properties of austenitic steels at room
temperature and at low temperature .47
Annex G (informative) Reference data on some physical properties .49
Annex H (informative) Numbering of steel grades in accordance with ISO 15510 .56
Bibliography .58
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 10, Steel for
pressure purposes.
This third edition cancels and replaces the second edition (ISO 9328-7:2011), which has been technically
revised. The following changes have been made:
— the term “product thickness” has been replaced with “nominal thickness”;
— new steel grades X1CrNiSI18-5-4, X2CrCuNbTiV22-1, X2CrNiMoN21-9-1, X2CrMnNiN21-5-1 and
X2CrNiMnMoCuN24-4-3-2 and all their technical data have been added;
— the technical data in Table 5 have been revised;
— the technical data in Table 9 have been aligned with EN 10028-7.
A list of all the parts in the ISO 9328 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
Introduction
The International Organization for Standardization (ISO) draws attention to the fact that it is claimed
that compliance with this document may involve the use of patents concerning eight steel grades.
ISO takes no position concerning the evidence, validity and scope of this patent right. The holder of
this patent right has assured ISO that he/she is willing to negotiate licences under reasonable and
non-discriminatory terms and conditions with applicants throughout the world. In this respect, the
statement of the holder of this patent right is registered with ISO. Information may be obtained from
the following sources.
c
For steel grades 1.4162 (but also consider footnote in Table 4) and 1.4662 from:
Outokumpu Stainless AB
SE-77480 AVESTA, Sweden
For steel grades 1.4420 and 1.4622 from:
Outokumpu Oyj
FI-02200 Espoo, Finland
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights other than those identified above. ISO shall not be held responsible for identifying any or
all such patent rights.
INTERNATIONAL STANDARD ISO 9328-7:2018(E)
Steel flat products for pressure purposes — Technical
delivery conditions —
Part 7:
Stainless steels
1 Scope
This document specifies requirements for flat products for pressure purposes made of stainless steels,
including austenitic creep-resisting steels, in thicknesses as specified in Tables 7 to 10.
The requirements and definitions of ISO 9328-1 also apply to this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
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 9328-1:2018,Steel flat products for pressure purposes — Technical delivery conditions — Part 1:
General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 9328-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
3.1
cryogenic temperature
temperature lower than −75 °C used in the liquefaction of gases
4 Classification and designation
Shall be in accordance with ISO 9328-1.
NOTE 1 Information on the designatio
...
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