1、September 2017 English price group 13No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.020.35; 23.060.40!%mP“27445
2、57www.din.deDIN EN ISO 11114-4Transportable gas cylinders Compatibility of cylinder and valve materials with gas contents Part 4: Test methods for selecting steels resistant to hydrogen embrittlement (ISO 111144:2017);English version EN ISO 111144:2017,English translation of DIN EN ISO 11114-4:2017-
3、09Ortsbewegliche 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 111144:2017);Englische Fassung EN ISO 111144:2017,Englische bersetzung von D
4、IN EN ISO 11114-4:2017-09Bouteilles 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 111144:2017);Version anglaise EN ISO 111144:2017,Traduction anglaise de DIN EN ISO
5、 11114-4:2017-09SupersedesDIN EN ISO 111144:200510www.beuth.deDocument comprises 27 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.08.17 DIN EN ISO 11114-4:2017-09 2 A comma is used as the decimal marker. National foreword Thi
6、s 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” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was DIN-Normenausschuss Dr
7、uckgasanlagen (DIN Standards Committee Pressurized Gas Installations), Working Committee NA 016-00-03 AA “Transportable gas cylinders and equipment; national Mirror Committee to CEN/TC 23 and ISO/TC 58”. The DIN Standards corresponding to the International Standards referred to in this document are
8、as follows: ISO 4287 DIN EN ISO 4287 ISO 7539-1 DIN EN ISO 7539-1 ISO 7539-6:2011 DIN EN ISO 7539-6:2012-01 ISO 9809-1 DIN EN ISO 9809-1 ISO 9809-2 DIN EN ISO 9809-2 ISO 9809-3 DIN EN ISO 9809-3 ISO 11114-1:2012 DIN EN ISO 11114-1:2012-07 ISO 11120 DIN EN ISO 11120 Amendments This standard differs f
9、rom DIN EN ISO 11114-4:2005-10 as follows: a) normative references have been updated; b) the title has been amended to “Test methods for selecting steels resistant to hydrogen embrittlement”; c) the tests have been developed following an extensive worldwide programme which comprises laboratory and f
10、ull scale tests; the last document on this topic was published by AFNOR in 2014. Previous editions DIN EN ISO 11114-4: 2005-10 DIN EN ISO 11114-4:2017-09 3 National Annex NA (informative) Bibliography DIN EN ISO 4287, Geometrical Product Specifications (GPS) Surface texture: Profile method Terms, de
11、finitions and surface texture parameters DIN EN ISO 7539-1, Corrosion of metals and alloys Stress corrosion testing Part 1: General guidance on testing procedures DIN EN ISO 7539-6:2012-01, Corrosion of metals and alloys Stress corrosion testing Part 6: Preparation and use of precracked specimens fo
12、r tests under constant load or constant displacement (ISO 7539-6:2011) DIN EN ISO 9809-1, Gas cylinders Refillable seamless steel gas cylinders Design, construction and testing Part 1: Quenched and tempered steel cylinders with tensile strength less than 1 100 MPa DIN EN ISO 9809-2, Gas cylinders Re
13、fillable seamless steel gas cylinders Design, construction and testing Part 2: Quenched and tempered steel cylinders with tensile strength greater than or equal to 1 100 MPa DIN EN ISO 9809-3, Gas cylinders Refillable seamless steel gas cylinders Design, construction and testing Part 3: Normalized s
14、teel cylinders DIN EN ISO 11114-1:2012-07, Gas cylinders Compatibility of cylinder and valve materials with gas contents Part 1: Metallic materials (ISO 11114-1:2012) DIN EN ISO 11120, Gas cylinders Refillable seamless steel tubes of water capacity between 150 l and 3 000 l Design, construction and
15、testing DIN EN ISO 11114-4:2017-09 4 This page is intentionally blank EUROPEAN 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 - Compatibility of cylinder and valve materials with gas contents
16、- 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 aciers rsistants la fragilisation par lhydrogne(ISO11114-
17、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 11114-4:2017) This European Standard was approved by CEN on 8 Decem
18、ber 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 obt
19、ained 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 C
20、EN-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, Irelan
21、d, 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 NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Manageme
22、nt 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 EEuropean foreword .3Introduction 51 Scope . 62 Normative references 63 Terms, definitions, symbols and abbreviated
23、terms . 73.1 Terms and definitions . 73.2 Symbols and abbreviated terms. 84 General requirements . 85 Test methods .95.1 Disc test (method A) . 95.1.1 Principle of test . 95.1.2 Test conditions and procedure 95.1.3 Treatment and interpretation of test results 115.1.4 Failure in conducting test 125.1
24、.5 Test report 125.2 Fracture mechanics test (method B) .155.2.1 Principle of the test method 155.2.2 Test procedure 155.2.3 Test results .195.3 Test method to determine the resistance to hydrogen assisted cracking of steel cylinders (method C) 195.3.1 General. 195.3.2 Specimen configurations and nu
25、mbers of tests . 205.3.3 Fatigue precracking 205.3.4 Specimen testing procedure . 205.3.5 Test procedure 215.3.6 Crack growth examination .215.3.7 Cylinder material qualification . 225.3.8 Failure in conducting test 225.3.9 Test report 225.4 Tensile tests 22Bibliography .23Contents PageDIN EN ISO 11
26、114-4:2017-09 EN ISO 11114-4:2017 (E) 2Foreword . 4European 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
27、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
28、 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 th
29、e 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
30、 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 11114-4:2
31、017 has been approved by CEN as EN ISO 11114-4:2017 without any modification. DIN EN ISO 11114-4:2017-09 EN ISO 11114-4:2017 (E) 3 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Intern
32、ational 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
33、 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,
34、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
35、 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 declaration
36、s 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
37、 ISOs 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.The committee responsible for this document is ISO/TC 58, Gas cylinders.This second edition cancels and replaces the first edition (ISO
38、11114-4:2005), which has been technically revised 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
39、 the ISO website.DIN EN ISO 11114-4:2017-09 EN ISO 11114-4:2017 (E) 4 IntroductionIt is widely 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 b
40、ursts) that has led gas cylinder users and manufacturers to adopt specific measures.The adoption 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 stee
41、ls (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 success
42、fully used for filling pressures up to 300 bar. This practice has been in widescale use up to the current time. Other higher pressures, although at lower tensile strength limits, have also been used.In recent years, improvements in steelmaking, e.g. by reducing the sulphur and phosphorus contents, h
43、ave indicated the possibility of increasing the tensile strength limit of 950 MPa for embrittling gas service. Experimental work has shown that the relevant parameters affecting hydrogen embrittlement are the following:a) microstructure resulting from the combination of the chemistry and the heat tr
44、eatment;b) mechanical properties of the material;c) applied stress;d) internal surface imperfections resulting in local stress concentrations;e) characteristics of the gas contained (composition, quality, pressure, etc.).When developing this document, only the material aspects, a) and b) and the cha
45、racteristics of the gas e) above, were considered. Other essential features, c) and d), are covered by the relevant parts of ISO 9809.Some low alloy steels other than 34 Cr Mo 4 may require tensile strength to be lower than 950 MPa, or may be permitted to be higher than 950 MPa, to be suitable for t
46、he manufacture of gas cylinders for embrittling gas service.This document specifies test methods to identify steels which, when combined with the cylinder manufacturing requirements specified in ISO 9809 (all parts), will result in cylinders suitable for use in embrittling gas service.These tests ha
47、ve been developed following an extensive world-wide programme which incorporated laboratory and full scale tests. See also AFNOR FD E29-753.DIN EN ISO 11114-4:2017-09 EN ISO 11114-4:2017 (E) 5 1 ScopeThis document specifies test methods and the evaluation of results from these tests in order to qual
48、ify 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
