EN ISO 11114-4:2017

Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 4: Test methods for selecting steels resistant to hydrogen embrittlement (ISO 11114-4:2017)

ISO 11114-4: 2017 specifies test methods and the evaluation of results from these tests in order to qualify steels suitable for use in the manufacture of gas cylinders (up to 3 000 l) for hydrogen and hydrogen bearing embrittling gases.
This document only applies to seamless steel gas cylinders.
The requirements of this document are not applicable if at least one of the following conditions for the intended gas service is fulfilled:
-      the working pressure of the filled embrittling gas is less than 20 % of the test pressure of the cylinder;
-      the partial pressure of the filled embrittling gas of a gas mixture is less than 5 MPa (50 bar) in the case of hydrogen and other embrittling gases, with the exception of hydrogen sulphide and methyl mercaptan; in such cases, the partial pressure shall not exceed 0,25 MPa (2,5 bar).
NOTE       In such cases, it is possible to design the cylinder as for ordinary (non-embrittling) gases.

Ortsbewegliche Gasflaschen - Verträglichkeit von Werkstoffen für Gasflaschen und Ventile mit den in Berührung kommenden Gasen - Teil 4: Prüfverfahren zur Auswahl von Stählen, die gegen Wasserstoffversprödung unempfindlich sind (ISO 11114-4:2017)

Dieses Dokument legt Prüfverfahren und die Beurteilung von Ergebnissen dieser Qualifikations¬prüfungen von Stählen, die für die Herstellung von Gasflaschen (bis 3 000 l Fassungsraum) für Wasserstoff und wasserstoffhaltige versprödende Gase geeignet sind, fest.
Dieses Dokument gilt ausschließlich für nahtlose Gasflaschen aus Stahl.
Die Anforderungen dieses Dokuments sind nicht anwendbar, wenn mindestens eine der folgenden Bedingungen für den vorgesehenen Gasbetrieb erfüllt ist:
   der Betriebsdruck des für die Füllung vorgesehenen versprödenden Gases beträgt weniger als 20 % des Prüfdrucks der Flasche;
   der Partialdruck des für die Füllung vorgesehenen versprödenden Gases aus einem Gasgemisch im Falle von Wasserstoff und anderen versprödenden Gasen beträgt weniger als 5 MPa (50 bar), mit Ausnahme von Schwefelwasserstoff und Methylmercaptan: bei welchen in diesem Falle der Partialdruck 0,25 MPa (2,5 bar) nicht überschreiten darf.
ANMERKUNG   In derartigen Fällen ist es möglich, die Gasflaschen so auszulegen, wie für gewöhnliche (nicht versprödende) Gase.

Bouteilles à gaz transportables - Compatibilité des matériaux et des robinets avec les contenus gazeux - Partie 4: Méthodes d'essai pour le choix des aciers résistants à la fragilisation par l'hydrogène (ISO 11114-4:2017)

ISO 11114-4:2017 spécifie des méthodes d'essai et l'évaluation des résultats de ces essais permettant de qualifier les aciers pouvant être utilisés pour fabriquer des bouteilles à gaz (jusqu'à 3 000 l) pour l'hydrogène et les gaz hydrogénés fragilisants.
Le présent document s'applique uniquement aux bouteilles à gaz en acier sans soudure.
Les exigences du présent document ne s'appliquent pas si au moins l'une des conditions suivantes concernant l'utilisation avec le gaz prévu, est remplie:
-      la pression d'utilisation du gaz fragilisant dans la bouteille représente moins de 20 % de la pression d'épreuve de la bouteille;
-      la pression partielle du gaz fragilisant du mélange gazeux contenu dans la bouteille représente moins de 5 MPa (50 bar) dans le cas de l'hydrogène et d'autres gaz fragilisants, sauf pour le sulfure d'hydrogène et le méthyle de mercaptan; dans de tels cas, la pression partielle ne doit pas dépasser 0,25 MPa (2,5 bar).
NOTE          Dans de tels cas, il est possible de concevoir les bouteilles comme pour des gaz ordinaires (non fragilisants).

Premične plinske jeklenke - Združljivost materialov za ventil in jeklenko s plinom - 4. del: Preskusne metode za izbiro jekel, odpornih proti vodikovi krhkosti (ISO 11114-4:2017)

Ta dokument določa preskusne metode in oceno rezultatov teh preskusov za kvalificiranje jekel, primernih za uporabo pri izdelavi plinskih jeklenk (do 3000 l) za vodik in pline z vodikovo krhkostjo.
Ta dokument se uporablja samo za nevarjene plinske jeklenke iz jekla.
Zahteve tega dokumenta ne veljajo, če je izpolnjen vsaj eden od naslednjih pogojev za predviden plin:
– delovni tlak napolnjenega krhkega plina znaša manj kot 20 % preskusnega tlaka v jeklenki;
– delni tlak napolnjenega krhkega plina ali plinske mešanice znaša manj kot 5 MPa (50 barov) v primeru vodika in drugih krhkih plinov, z izjemo vodikovega sulfida in metil merkaptana; v takšnih primerih delni tlak ne sme preseči 0,25 MPa (2,5 bara).
OPOMBA: V takšnih primerih se lahko jeklenko konstruira kot za običajne (nekrhke) pline.

General Information

• Status: Published
• Publication Date: 25-Apr-2017
• Withdrawal Date: 30-Oct-2017
• ICS: 23.020.30 - Pressure vessels, gas cylinders
• ICS: 23.020.35 - Gas cylinders
• ICS: 23.060.40 - Pressure regulators
• Technical Committee: CEN/TC 23 - Transportable gas cylinders
• Drafting Committee: CEN/TC 23 - Transportable gas cylinders
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 26-Apr-2017
• Completion Date: 26-Apr-2017
• Directive: 2008/68/EC - Directve 2008/68/EC of the European Parliament and of the council of 24 September 2008 on the inland transport of the dangerous goods
• Directive: 94/55/EC - Transport of dangerous goods by road
• Directive: 96/49/EC - Transport of dangerous goods by rail
• Directive: 96/86/EC - Transport of dangerous goods by road (94/55/EC Dir. amendment)
• Directive: 96/87/EC - Transport of dangerous goods by rail (96/49/EC Dir. amendment)
• Mandate: M/086 - Mandate to CEN for standardization in the field of transport of dangerous goods
• Ref Project: SIST EN ISO 11114-4:2017 - Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 4: Test methods for selecting steels resistant to hydrogen embrittlement (ISO 11114-4:2017)

Relations

• Replaces: EN ISO 11114-4:2005 - Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 4: Test methods for selecting metallic materials resistant to hydrogen embrittlement (ISO 11114-4:2005)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2017
1DGRPHãþD
SIST EN ISO 11114-4:2005
3UHPLþQHSOLQVNHMHNOHQNH=GUXåOMLYRVWPDWHULDORY]DYHQWLOLQMHNOHQNRVSOLQRP
GHO3UHVNXVQHPHWRGH]DL]ELURMHNHORGSRUQLKSURWLYRGLNRYLNUKNRVWL,62

Transportable gas cylinders - Compatibility of cylinder and valve materials with gas
contents - Part 4: Test methods for selecting steels resistant to hydrogen embrittlement
(ISO 11114-4:2017)
Ortsbewegliche Gasflaschen - Verträglichkeit von Werkstoffen für Gasflaschen und
Ventile mit den in Berührung kommenden Gasen - Teil 4: Prüfverfahren zur Auswahl von
Stählen, die gegen Wasserstoffversprödung unempfindlich sind (ISO 11114-4:2017)
Bouteilles à gaz transportables - Compatibilité des matériaux et des robinets avec les
contenus gazeux - Partie 4: Méthodes d'essai pour le choix des aciers résistants à la
fragilisation par l'hydrogène (ISO 11114-4:2017)
Ta slovenski standard je istoveten z: EN ISO 11114-4:2017
ICS:
23.020.35 Plinske jeklenke Gas cylinders
23.060.40 7ODþQLUHJXODWRUML Pressure regulators
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 11114-4
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2017
EUROPÄISCHE NORM
ICS 23.020.35 Supersedes EN ISO 11114-4:2005
English Version
Transportable gas cylinders - Compatibility of cylinder and
valve materials with gas contents - Part 4: Test methods
for selecting steels resistant to hydrogen embrittlement
(ISO 11114-4:2017)
Bouteilles à gaz transportables - Compatibilité des Ortsbewegliche Gasflaschen - Verträglichkeit von
matériaux et des robinets avec les contenus gazeux - Werkstoffen für Gasflaschen und Ventile mit den in
Partie 4: Méthodes d'essai pour le choix des aciers Berührung kommenden Gasen - Teil 4: Prüfverfahren
résistants à la fragilisation par l'hydrogène (ISO zur Auswahl von Stählen, die gegen
11114-4:2017) Wasserstoffversprödung unempfindlich sind (ISO
11114-4:2017)
This European Standard was approved by CEN on 8 December 2016.

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11114-4:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
This document (EN ISO 11114-4:2017) has been prepared by Technical Committee ISO/TC 58 “Gas
cylinders” in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders” the
secretariat of which is held by BSI.
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 October 2017, and conflicting national standards shall
be withdrawn at the latest by October 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 11114-4:2005.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 11114-4:2017 has been approved by CEN as EN ISO 11114-4:2017 without any
modification.
INTERNATIONAL ISO
STANDARD 11114-4
Second edition
2017-04
Transportable gas cylinders —
Compatibility of cylinder and valve
materials with gas contents —
Part 4:
Test methods for selecting steels
resistant to hydrogen embrittlement
Bouteilles à gaz transportables — Compatibilité des matériaux et des
robinets avec les contenus gazeux —
Partie 4: Méthodes d’essai pour le choix des aciers résistants à la
fragilisation par l’hydrogène
Reference number
ISO 11114-4:2017(E)
©
ISO 2017
ISO 11114-4:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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.
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ii © ISO 2017 – All rights reserved

ISO 11114-4:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviated terms . 2
3.1 Terms and definitions . 2
3.2 Symbols and abbreviated terms. 3
4 General requirements . 3
5 Test methods . 4
5.1 Disc test (method A) . 4
5.1.1 Principle of test . 4
5.1.2 Test conditions and procedure . 4
5.1.3 Treatment and interpretation of test results . 6
5.1.4 Failure in conducting test . 7
5.1.5 Test report . 7
5.2 Fracture mechanics test (method B) .10
5.2.1 Principle of the test method .10
5.2.2 Test procedure .10
5.2.3 Test results .14
5.3 Test method to determine the resistance to hydrogen assisted cracking of steel
cylinders (method C) .14
5.3.1 General.14
5.3.2 Specimen configurations and numbers of tests .15
5.3.3 Fatigue precracking .15
5.3.4 Specimen testing procedure .15
5.3.5 Test procedure .16
5.3.6 Crack growth examination .16
5.3.7 Cylinder material qualification .17
5.3.8 Failure in conducting test .17
5.3.9 Test report .17
5.4 Tensile tests .17
Bibliography .18
ISO 11114-4:2017(E)
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
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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 meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about I
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