ISO 15156-3:2020
(Main)Petroleum and natural gas industries — Materials for use in H2S-containing environments in oil and gas production — Part 3: Cracking-resistant CRAs (corrosion-resistant alloys) and other alloys
Petroleum and natural gas industries — Materials for use in H2S-containing environments in oil and gas production — Part 3: Cracking-resistant CRAs (corrosion-resistant alloys) and other alloys
This document gives requirements and recommendations for the selection and qualification of CRAs (corrosion-resistant alloys) and other alloys for service in equipment used in oil and natural gas production and natural gas treatment plants in H2S-containing environments whose failure can pose a risk to the health and safety of the public and personnel or to the environment. It can be applied to help avoid costly corrosion damage to the equipment itself. It supplements, but does not replace, the materials requirements of the appropriate design codes, standards, or regulations. This document addresses the resistance of these materials to damage that can be caused by sulfide stress cracking (SSC), stress corrosion cracking (SCC), and galvanically induced hydrogen stress cracking (GHSC). This document is concerned only with cracking. Loss of material by general (mass loss) or localized corrosion is not addressed. Table 1 provides a non-exhaustive list of equipment to which this document is applicable, including exclusions. This document applies to the qualification and selection of materials for equipment designed and constructed using load controlled design methods. For design utilizing strain-based design methods, see ISO 15156‑1:2020, Clause 5. This document is not necessarily suitable for application to equipment used in refining or downstream processes and equipment.
Industries du pétrole et du gaz naturel — Matériaux pour utilisation dans des environnements contenant de l'hydrogène sulfuré (H2S) dans la production de pétrole et de gaz — Partie 3: ARC (alliages résistants à la corrosion) et autres alliages résistant à la fissuration
Le présent document spécifie des exigences et donne des recommandations concernant la sélection et la qualification des alliages ARC (alliages résistants à la corrosion) et d'autres alliages dans des équipements utilisés pour la production de pétrole et de gaz naturel et dans des installations de traitement de gaz naturel en milieux contenant de l'hydrogène sulfuré (H2S), où toute défaillance peut présenter un risque pour la santé et la sécurité du public et du personnel ou pour l'environnement. Il peut être appliqué pour aider à prévenir les dommages coûteux occasionnés par la corrosion aux équipements. Il complète, sans toutefois s'y substituer, les exigences concernant les matériaux dans les codes de construction, normes ou autres réglementations appropriés. Le présent document traite de la résistance de ces matériaux aux dommages pouvant être causés par la fissuration sous contrainte induite par les sulfures (SSC, sulfide stress-cracking), la corrosion fissurante sous contrainte (SCC, stress-corrosion cracking) et la fissuration sous contrainte par l'hydrogène induite par couplage galvanique (GHSC, galvanically-induced hydrogen stress cracking). Le présent document ne porte que sur la fissuration. Toute perte de matériau par corrosion générale (perte de masse) ou localisée n'est pas étudiée. Le Tableau 1 donne une liste non exhaustive d'équipements relevant du domaine d'application du présent document et comprenant une liste d'équipements pouvant en être exclus. Le présent document s'applique à la qualification et au choix des matériaux pour les équipements conçus et construits sur la base des méthodes de calcul sous charge contrôlée. Pour les conceptions effectuées sur la base de méthodes de calcul basées sur le niveau de déformation acceptable, voir l'ISO 15156‑1:2020, Article 5. Le présent document ne convient pas nécessairement à des équipements utilisés dans des processus et des équipements de raffinage ou en aval.
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INTERNATIONAL ISO
STANDARD 15156-3
Fourth edition
2020-11
Petroleum and natural gas
industries — Materials for use in H S-
containing environments in oil and
gas production —
Part 3:
Cracking-resistant CRAs (corrosion-
resistant alloys) and other alloys
Industries du pétrole et du gaz naturel — Matériaux pour utilisation
dans des environnements contenant de l'hydrogène sulfuré (H S) dans
la production de pétrole et de gaz —
Partie 3: ARC (alliages résistants à la corrosion) et autres alliages
résistants à la fissuration
Reference number
©
ISO 2020
© ISO 2020
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
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 3
4 Symbols and abbreviated terms . 5
5 Factors affecting the cracking-resistance of CRAs and other alloys in H S-containing
environments . 6
6 Qualification and selection of CRAs and other alloys with respect to SSC, SCC, and
GHSC in H S-containing environments . 6
6.1 General . 6
6.2 Evaluation of materials properties . 7
6.2.1 Hardness of parent metals . 7
6.2.2 Cracking-resistance properties of welds. 7
6.2.3 Cracking-resistance properties associated with other fabrication methods . 8
6.3 PREN . 9
7 Purchasing information and marking . 9
7.1 Information that should be supplied for material purchasing . 9
7.2 Marking, labelling, and documentation .10
Annex A (normative) Environmental cracking-resistant CRAs and other alloys (including
Table A.1 — Guidance on the use of the materials selection tables) .11
Annex B (normative) Qualification of CRAs for H S-service by laboratory testing .57
Annex C (informative) Information that should be supplied for material purchasing .67
Annex D (informative) Nominated sets of test conditions .69
Bibliography .70
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 of 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 www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore
structures for petroleum, petrochemical and natural gas industries, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 12, Materials, equipment and
offshore structures for petroleum, petrochemical and natural gas industries, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 15156-3:2015), which has been
technically revised. The main changes compared to the previous edition are as follows:
— Table A.27 UNS S17400 (17-4PH SS) has new limits. The use of the alloy at the annotated environmental
conditions is now limited to applications where sustained stress is no more than 50 % of SMYS;
— Table A.32 new limits and annotations for UNS N09946 separate from UNS N09945;
— Table A.41 inclusion of UNS R55400 (new a-b Ti alloy);
— Table A.3 UNS S20910 (Nitronic 50) note modifications;
— Tables A.22, A.23, A.26 through A.30, and A.33 temperature conversion corrections;
— Table A.23 new note for maximum design tensile stress for UNS J91540;
— Table A.32 newly added UNS N07718 (high strength Alloy 718, with two-step aging cycle, meeting
API 6A CRA composition and a maximum hardness of 45 HRC) and UNS N09955 requirements and
note letters designation changes on UNS N09925, N09935, N09945 and N09946;
— Table A.40 title modification and note clarification;
— Clause A.13 Cladding, overlays, and wear-resistant alloys modifications;
— Table A.18 and Table A.19 (Martensitic SS) remarks modifications;
— Table A.24 Duplex SS Hot Isostatically Pressed (HIP) inclusion and remarks modification;
iv © ISO 2020 – All rights reserved
— the informative Annex D, "Materials chemical compositions and other information", has been
removed due to copyright reasons;
— additions to the bibliography.
A list of all parts in the ISO 15156 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
Introduction
The consequences of sudden failures of metallic oil and gas field components associated with their
exposure to H S-containing production fluids led to the preparation of the first edition of NACE MR0175
which was published in 1975 by the National Association of Corrosion Engineers, now known as NACE
International.
The original and subsequent editions of NACE MR0175 established limits of H S partial pressure above
which precautions against sulfide stress cracking (SSC) were always considered necessary. They
also provided guidance for the selection and specification of SSC-resistant materials when the H S
thresholds were exceeded. In more recent editions, NACE MR0175 has also provided application limits
for some corrosion-resistant alloys in terms of environmental composition and pH, temperature, and
H S partial pressures.
In separate developments, the European Federation of Corrosion issued EFC Publication 16 in 1995 and
EFC Publication 17 in 1996. These documents are generally complementary to those of NACE, though
they differed in scope and detail.
In 2003, the publication of the ISO 15156 series and NACE MR0175/ISO 15156 was completed for the
first time. These technically identical documents utilized the above sources to provide requirements
and recommendations for materials qualification and selection for application in environments
containing wet H S in oil and gas production systems. They are complemented by NACE TM0177 and
NACE TM0284 test methods.
The revision of this document, i.e. ISO 15156, involves a consolidation of all changes agreed and published
in the Technical Circular 1, ISO 15156-3:2015/Cir.1:2016, the Technical Circular 2, ISO 15156-3:2015/
Cir.2:2018 and the Technical Circular 3, ISO 15156-3:2015/Cir.3:2019, published by the ISO 15156 series
Maintenance Agency secretariat at DIN.
The changes were developed by, and approved by the ballot of, representative groups from within
the oil and gas production industry. The great majority of these changes stem from issues raised by
document users. A description of the process by which these changes were approved can be found at
the ISO 15156 series maintenance website: www .iso .org/ iso15156maintenance.
When found necessary by oil and gas production industry experts, future interim changes to this
document will be processed in the same way and will lead to interim updates to this document in
the form of Technical Corrigenda or Technical Circulars. Document users should be aware that such
documents can exist and can impact the validity of the dated references in this document.
The ISO 15156 series Maintenance Agency at DIN was set up after approval by the ISO Technical
Management Board given in document 34/2007. This document describes the makeup of the agency,
which includes experts from NACE, EFC, and ISO/TC 67, and the process for approval of amendments.
It is available from the ISO 15156 series maintenance website and from the ISO/TC 67 Secretariat. The
website also provides access to related documents that provide more detail of the ISO 15156 series
maintenance activities.
vi © ISO 2020 – All rights reserved
INTERNATIONAL STANDARD ISO 15156-3:2020(E)
Petroleum and natural gas industries — Materials
for use in H S-containing environments in oil and gas
production —
Part 3:
Cracking-resistant CRAs (corrosion-resistant alloys) and
other alloys
WARNING — CRAs (corrosion-resistant alloys) and other alloys selected using this document
are resistant to cracking in defined HS-containing environments in oil and gas production,
but not necessarily immune to cracking under all service conditions. It is the equipment user's
responsibility to select the CRAs and other alloys suitable for the intended service.
1 Scope
This document gives requirements and recommendations for the selection and qualification of CRAs
(corrosion-resistant alloys) and other alloys for service in equipment used in oil and natural gas
production and natural gas treatment plants in H S-containing environments whose failure can pose
a risk to the health and safety of the public and personnel or to the environment. It can be applied to
help avoid costly corrosion damage to the equipment itself. It supplements, but does not replace, the
materials requirements of the appropriate design codes, standards, or regulations.
This document addresses the resistance of these materials to damage that can be caused by sulfide
stress cracking (SSC), stress corrosion cracking (SCC), and galvanically induced hydrogen stress
cracking (GHSC).
This document is concerned only with cracking. Loss of material by general (mass loss) or localized
corrosion is not addressed.
Table 1 provides a non-exhaustive list of equipment to which this documen
...
INTERNATIONAL ISO
STANDARD 15156-3
Fourth edition
2020-11
Petroleum and natural gas
industries — Materials for use in H S-
containing environments in oil and
gas production —
Part 3:
Cracking-resistant CRAs (corrosion-
resistant alloys) and other alloys
Industries du pétrole et du gaz naturel — Matériaux pour utilisation
dans des environnements contenant de l'hydrogène sulfuré (H S) dans
la production de pétrole et de gaz —
Partie 3: ARC (alliages résistants à la corrosion) et autres alliages
résistants à la fissuration
Reference number
©
ISO 2020
© ISO 2020
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
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 3
4 Symbols and abbreviated terms . 5
5 Factors affecting the cracking-resistance of CRAs and other alloys in H S-containing
environments . 6
6 Qualification and selection of CRAs and other alloys with respect to SSC, SCC, and
GHSC in H S-containing environments . 6
6.1 General . 6
6.2 Evaluation of materials properties . 7
6.2.1 Hardness of parent metals . 7
6.2.2 Cracking-resistance properties of welds. 7
6.2.3 Cracking-resistance properties associated with other fabrication methods . 8
6.3 PREN . 9
7 Purchasing information and marking . 9
7.1 Information that should be supplied for material purchasing . 9
7.2 Marking, labelling, and documentation .10
Annex A (normative) Environmental cracking-resistant CRAs and other alloys (including
Table A.1 — Guidance on the use of the materials selection tables) .11
Annex B (normative) Qualification of CRAs for H S-service by laboratory testing .57
Annex C (informative) Information that should be supplied for material purchasing .67
Annex D (informative) Nominated sets of test conditions .69
Bibliography .70
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 of 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 www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore
structures for petroleum, petrochemical and natural gas industries, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 12, Materials, equipment and
offshore structures for petroleum, petrochemical and natural gas industries, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 15156-3:2015), which has been
technically revised. The main changes compared to the previous edition are as follows:
— Table A.27 UNS S17400 (17-4PH SS) has new limits. The use of the alloy at the annotated environmental
conditions is now limited to applications where sustained stress is no more than 50 % of SMYS;
— Table A.32 new limits and annotations for UNS N09946 separate from UNS N09945;
— Table A.41 inclusion of UNS R55400 (new a-b Ti alloy);
— Table A.3 UNS S20910 (Nitronic 50) note modifications;
— Tables A.22, A.23, A.26 through A.30, and A.33 temperature conversion corrections;
— Table A.23 new note for maximum design tensile stress for UNS J91540;
— Table A.32 newly added UNS N07718 (high strength Alloy 718, with two-step aging cycle, meeting
API 6A CRA composition and a maximum hardness of 45 HRC) and UNS N09955 requirements and
note letters designation changes on UNS N09925, N09935, N09945 and N09946;
— Table A.40 title modification and note clarification;
— Clause A.13 Cladding, overlays, and wear-resistant alloys modifications;
— Table A.18 and Table A.19 (Martensitic SS) remarks modifications;
— Table A.24 Duplex SS Hot Isostatically Pressed (HIP) inclusion and remarks modification;
iv © ISO 2020 – All rights reserved
— the informative Annex D, "Materials chemical compositions and other information", has been
removed due to copyright reasons;
— additions to the bibliography.
A list of all parts in the ISO 15156 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
Introduction
The consequences of sudden failures of metallic oil and gas field components associated with their
exposure to H S-containing production fluids led to the preparation of the first edition of NACE MR0175
which was published in 1975 by the National Association of Corrosion Engineers, now known as NACE
International.
The original and subsequent editions of NACE MR0175 established limits of H S partial pressure above
which precautions against sulfide stress cracking (SSC) were always considered necessary. They
also provided guidance for the selection and specification of SSC-resistant materials when the H S
thresholds were exceeded. In more recent editions, NACE MR0175 has also provided application limits
for some corrosion-resistant alloys in terms of environmental composition and pH, temperature, and
H S partial pressures.
In separate developments, the European Federation of Corrosion issued EFC Publication 16 in 1995 and
EFC Publication 17 in 1996. These documents are generally complementary to those of NACE, though
they differed in scope and detail.
In 2003, the publication of the ISO 15156 series and NACE MR0175/ISO 15156 was completed for the
first time. These technically identical documents utilized the above sources to provide requirements
and recommendations for materials qualification and selection for application in environments
containing wet H S in oil and gas production systems. They are complemented by NACE TM0177 and
NACE TM0284 test methods.
The revision of this document, i.e. ISO 15156, involves a consolidation of all changes agreed and published
in the Technical Circular 1, ISO 15156-3:2015/Cir.1:2016, the Technical Circular 2, ISO 15156-3:2015/
Cir.2:2018 and the Technical Circular 3, ISO 15156-3:2015/Cir.3:2019, published by the ISO 15156 series
Maintenance Agency secretariat at DIN.
The changes were developed by, and approved by the ballot of, representative groups from within
the oil and gas production industry. The great majority of these changes stem from issues raised by
document users. A description of the process by which these changes were approved can be found at
the ISO 15156 series maintenance website: www .iso .org/ iso15156maintenance.
When found necessary by oil and gas production industry experts, future interim changes to this
document will be processed in the same way and will lead to interim updates to this document in
the form of Technical Corrigenda or Technical Circulars. Document users should be aware that such
documents can exist and can impact the validity of the dated references in this document.
The ISO 15156 series Maintenance Agency at DIN was set up after approval by the ISO Technical
Management Board given in document 34/2007. This document describes the makeup of the agency,
which includes experts from NACE, EFC, and ISO/TC 67, and the process for approval of amendments.
It is available from the ISO 15156 series maintenance website and from the ISO/TC 67 Secretariat. The
website also provides access to related documents that provide more detail of the ISO 15156 series
maintenance activities.
vi © ISO 2020 – All rights reserved
INTERNATIONAL STANDARD ISO 15156-3:2020(E)
Petroleum and natural gas industries — Materials
for use in H S-containing environments in oil and gas
production —
Part 3:
Cracking-resistant CRAs (corrosion-resistant alloys) and
other alloys
WARNING — CRAs (corrosion-resistant alloys) and other alloys selected using this document
are resistant to cracking in defined HS-containing environments in oil and gas production,
but not necessarily immune to cracking under all service conditions. It is the equipment user's
responsibility to select the CRAs and other alloys suitable for the intended service.
1 Scope
This document gives requirements and recommendations for the selection and qualification of CRAs
(corrosion-resistant alloys) and other alloys for service in equipment used in oil and natural gas
production and natural gas treatment plants in H S-containing environments whose failure can pose
a risk to the health and safety of the public and personnel or to the environment. It can be applied to
help avoid costly corrosion damage to the equipment itself. It supplements, but does not replace, the
materials requirements of the appropriate design codes, standards, or regulations.
This document addresses the resistance of these materials to damage that can be caused by sulfide
stress cracking (SSC), stress corrosion cracking (SCC), and galvanically induced hydrogen stress
cracking (GHSC).
This document is concerned only with cracking. Loss of material by general (mass loss) or localized
corrosion is not addressed.
Table 1 provides a non-exhaustive list of equipment to which this documen
...
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