1、Transportable gas cylinders Compatibility of cylinder and valve materials with gas contentsPart 4: Test methods for selecting steels resistant to hydrogen embrittlementBS EN ISO 11114-4:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROP
2、ENNE EUROPISCHE NORM EN ISO 11114-4 April 2017 ICS 23.020.35 Supersedes EN ISO 11114-4:2005English 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)
3、Bouteilles gaz transportables - Compatibilit des matriaux et des robinets avec les contenus gazeux - Partie 4: Mthodes dessai pour le choix des aciers rsistants la fragilisation par lhydrogne (ISO 11114-4:2017) Ortsbewegliche Gasflaschen - Vertrglichkeit von Werkstoffen fr Gasflaschen und Ventile mi
4、t den in Berhrung kommenden Gasen - Teil 4: Prfverfahren zur Auswahl von Sthlen, die gegen Wasserstoffversprdung 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 stipul
5、ate 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 St
6、andard 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 n
7、ational 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,
8、Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and
9、 by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11114-4:2017 ENational forewordThis British Standard is the UK implementation of EN ISO 11114-4:2017. It is identical to ISO 11114-4:2017. It supersedes BS EN ISO 11114-4:2005, which is withdrawn.The UK participation in its p
10、reparation was entrusted to Technical Committee PVE/3, Gas containers.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appli
11、cation. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 83957 3ICS 23.020.35Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Comm
12、ittee on 30 June 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 11114-4:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11114-4 April 2017 ICS 23.020.35 Supersedes EN ISO 11114-4:2005English Version Transportable gas cylinders - Compatibil
13、ity of cylinder and valve materials with gas contents - Part 4: Test methods for selecting steels resistant to hydrogen embrittlement (ISO 11114-4:2017) Bouteilles gaz transportables - Compatibilit des matriaux et des robinets avec les contenus gazeux - Partie 4: Mthodes dessai pour le choix des aci
14、ers rsistants la fragilisation par lhydrogne (ISO 11114-4:2017) Ortsbewegliche Gasflaschen - Vertrglichkeit von Werkstoffen fr Gasflaschen und Ventile mit den in Berhrung kommenden Gasen - Teil 4: Prfverfahren zur Auswahl von Sthlen, die gegen Wasserstoffversprdung unempfindlich sind (ISO 11114-4:20
15、17) 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
16、 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
17、 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 Mac
18、edonia, 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 COMIT EUROPEN DE NORMALIS
19、ATION EUROPISCHES KOMITEE FR 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 worldwide for CEN national Members. Ref. No. EN ISO 11114-4:2017 EBS EN ISO 11114-4:2017EN ISO 11114-4:2017 (E) 3 European f
20、oreword 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 sta
21、ndard, 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 right
22、s. 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-CENEL
23、EC 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, Ice
24、land, 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 a
25、ny modification. ISO 11114-4:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms, definitions, symbols and abbreviated terms . 23.1 Terms and definitions . 23.2 Symbols and abbreviated terms. 34 General requirements . 35 Test methods . 45.1 Disc test (method A) . 45.1.1 Princi
26、ple of test . 45.1.2 Test conditions and procedure 45.1.3 Treatment and interpretation of test results . 65.1.4 Failure in conducting test . 75.1.5 Test report . 75.2 Fracture mechanics test (method B) . 105.2.1 Principle of the test method 105.2.2 Test procedure 105.2.3 Test results . 145.3 Test me
27、thod to determine the resistance to hydrogen assisted cracking of steel cylinders (method C) 145.3.1 General. 145.3.2 Specimen configurations and numbers of tests .155.3.3 Fatigue precracking 155.3.4 Specimen testing procedure . 155.3.5 Test procedure 165.3.6 Crack growth examination . 165.3.7 Cylin
28、der material qualification . 175.3.8 Failure in conducting test 175.3.9 Test report 175.4 Tensile tests 17Bibliography .18 ISO 2017 All rights reserved iiiContents PageBS EN ISO 11114-4:2017ISO 11114-4:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms, definitions, symbols a
29、nd abbreviated terms . 23.1 Terms and definitions . 23.2 Symbols and abbreviated terms. 34 General requirements . 35 Test methods . 45.1 Disc test (method A) . 45.1.1 Principle of test . 45.1.2 Test conditions and procedure 45.1.3 Treatment and interpretation of test results . 65.1.4 Failure in cond
30、ucting test . 75.1.5 Test report . 75.2 Fracture mechanics test (method B) . 105.2.1 Principle of the test method 105.2.2 Test procedure 105.2.3 Test results . 145.3 Test method to determine the resistance to hydrogen assisted cracking of steel cylinders (method C) 145.3.1 General. 145.3.2 Specimen
31、configurations and numbers of tests .155.3.3 Fatigue precracking 155.3.4 Specimen testing procedure . 155.3.5 Test procedure 165.3.6 Crack growth examination . 165.3.7 Cylinder material qualification . 175.3.8 Failure in conducting test 175.3.9 Test report 175.4 Tensile tests 17Bibliography .18 ISO
32、2017 All rights reserved iiiContents PageBS EN ISO 11114-4:2017ISO 11114-4:2017(E)ForewordISO (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
33、 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 collaborate
34、s 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 crit
35、eria 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
36、 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
37、 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 ISOs adherence to the World Trade Organization (
38、WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.The committee responsible for this document is ISO/TC 58, Gas cylinders.This second edition cancels and replaces the first edition (ISO 11114-4:2005), which has been technically revised
39、 with the following changes: improvement of the procedure corresponding to Method C and adjustment of acceptance criteria; light modifications on procedures corresponding to Method A and Method B.A list of parts in the ISO 11114 series can be found on the ISO website.iv ISO 2017 All rights reservedB
40、S EN ISO 11114-4:2017ISO 11114-4:2017(E)ForewordISO (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 bod
41、y 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 Electrote
42、chnical 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
43、 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 r
44、esponsible 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
45、 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 ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers
46、to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.The committee responsible for this document is ISO/TC 58, Gas cylinders.This second edition cancels and replaces the first edition (ISO 11114-4:2005), which has been technically revised with the following changes: improvement o
47、f the procedure corresponding to Method C and adjustment of acceptance criteria; light modifications on procedures corresponding to Method A and Method B.A list of parts in the ISO 11114 series can be found on the ISO website.iv ISO 2017 All rights reserved ISO 11114-4:2017(E)IntroductionIt is widel
48、y recognized that compressed hydrogen and some hydrogen bearing gases can have an embrittling effect on steels. This embrittling effect has resulted in the failure of hydrogen gas cylinders (including some bursts) that has led gas cylinder users and manufacturers to adopt specific measures.The adopt
49、ion of these measures has eliminated all known failures of hydrogen cylinders from this embrittlement phenomenon as far has been reported.The basic recommendation is to limit the tensile strength of the steels (see ISO 11114-1) and eliminate manufacturing defects.This tensile strength limit of 950 MPa was developed for quenched and tempered gas cylinders of 34 Cr Mo 4 type steels using steelmaking practices, chemistry and manufacturing techniques typical of those used during the early 1980s and successfully used for
