1、BS ISO 20378:2017Welding consumables Rodsfor gas welding of non-alloyand creep-resisting steels ClassificationBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 20378:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 2037
2、8:2017.The UK participation in its preparation was entrusted to Technical Committee WEE/39, Welding consumables.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. U
3、sers are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 90085 3 ICS 25.160.20 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authorit
4、y of the Standards Policy and Strategy Committee on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 20378:2017 ISO 2017Welding consumables Rods for gas welding of non-alloy and creep-resisting steels ClassificationProduits consommables pour le soudage B
5、aguettes pour le soudage aux gaz des aciers non allis et des aciers rsistant au fluage ClassificationINTERNATIONAL STANDARDISO20378First edition2017-02Reference numberISO 20378:2017(E)BS ISO 20378:2017ISO 20378:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in
6、 SwitzerlandAll 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
7、be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 20378:2017ISO 20378:2017(E)Foreword iv1 S
8、cope . 12 Normative references 13 Terms and definitions . 14 Classification 15 Symbols and requirements 15.1 Symbol for the product/process 15.2 Symbol for the chemical composition of rods 16 Chemical analysis . 37 Rounding procedure . 38 Retesting . 39 Technical delivery conditions . 310 Designatio
9、n 3Annex A (informative) Welding behaviour . 4Bibliography 5 ISO 2017 All rights reserved iiiContents PageBS ISO 20378:2017ISO 20378:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of prepari
10、ng 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 lia
11、ison 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 Dir
12、ectives, 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 tha
13、t 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 de
14、clarations 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 informat
15、ion about 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.This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 3, Welding consumabl
16、es.This document is based on EN 125361and AWS A5.2/A5M2.Requests for official interpretations of any aspect of this document should be directed to the Secretariat of ISO/TC 44/SC 3 via your national standards body. A complete listing of these bodies can be found at www .iso .org.iv ISO 2017 All righ
17、ts reservedBS ISO 20378:2017INTERNATIONAL STANDARD ISO 20378:2017(E)Welding consumables Rods for gas welding of non-alloy and creep-resisting steels Classification1 ScopeThis document specifies a classification for the designation of rods for gas welding of nonalloy and creep-resisting steels in ter
18、ms of the chemical composition of the rod.2 Normative referencesThe 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 edit
19、ion of the referenced document (including any amendments) applies.ISO 544, Welding consumables Technical delivery conditions for filler materials and fluxes Type of product, dimensions, tolerances and markingsISO 80000-1:2009, Quantities and units Part 1: General. Corrected by ISO 800001:2009/Cor 1:
20、20113 Terms and definitionsNo terms and definitions are listed in this document.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 http:/ www .is
21、o .org/ obp4 ClassificationA rod shall be classified with the symbol for its chemical composition in accordance with Table 1. Information about welding behaviour is given in Annex A.The classification is divided into two parts:a) the first part gives a symbol indicating the product/process to be ide
22、ntified;b) the second part gives a symbol indicating the chemical composition of the rod.5 Symbols and requirements5.1 Symbol for the product/processThe symbol for the rod used in the gas welding process shall be the letter “O”.5.2 Symbol for the chemical composition of rodsThe symbol in Table 1 ind
23、icates the chemical composition of the rod, determined under conditions given in Clause 6. ISO 2017 All rights reserved 1BS ISO 20378:2017ISO 20378:2017(E)Table1 Symbols for chemical composition of rodsSymbolChemicalcompositiona% (by mass)CSiMnPSMoNiCrCubOthersI0,03to0,120,01to0,200,35to0,650,0300,0
24、250,30,30,150,35V0,03II0,03to0,200,05to0,250,50 to 1,200,0250,0250,30,30,150,35V0,03III0,05to0,150,05to0,250,95 to 1,250,0200,0200,30,35to0,800,150,35V0,03IV0,08to0,150,10to0,250,90 to 1,200,0200,0200,45to0,650,30,150,35V0,03V0,10to0,150,10to0,250,80 to 1,200,0200,0200,45to0,650,30,80 to 1,200,35V0,
25、03VI0,03to0,100,10to0,250,40to0,700,0200,0200,90 to 1,200,32,00to2,200,35V0,03450,080,100,500,0350,0400,200,300,200,30Al0,02600,150,10to0,350,90to1,400,0350,0350,200,300,200,30Al0,02650,150,10to0,700,90 to 1,600,0350,0350,200,300,400,30Al0,021000,18to0,230,20to0,350,70to0,900,0250,0250,15to0,250,40t
26、o0,700,40to0,600,15Al0,02ZAny other agreed compositioncaSingle values shown in the table are maximum values.bIncludingcoating.cConsumables for which the chemical composition is not listed in this table shall be symbolized with the prefix Z. The chemical composition ranges are not specified and there
27、fore, it is possible that two electrodes with the same Z classification are not interchangeable.2 ISO 2017 All rights reservedBS ISO 20378:2017ISO 20378:2017(E)6 Chemical analysisChemical analysis is performed on specimens of the rod. Any analytical technique can be used, but in case of dispute, ref
28、erence shall be made to established published methods.7 Rounding procedureActual test values obtained shall be subject to ISO 800001:2009, B.3, Rule A. If the measured values are obtained by equipment calibrated in units other than those of this document, the measured values shall be converted to th
29、e units of this document before rounding. If an average value is to be compared to the requirements of this document, rounding shall be done only after calculating the average. The rounded results shall fulfil the requirements of the appropriate table for the classification under test.8 RetestingIf
30、any test fails to meet the requirement, that test shall be repeated twice. The results of both retests shall meet the requirement. Specimens for the retest may be taken from the original sample or from a new sample. For chemical analysis, retesting need be only for those specific elements that fail
31、to meet its test requirement. If the results of one or both retests fail to meet the requirement, the material under test shall be considered as not meeting the requirements of this specification for that classification.In the event that, during preparation or after completion of any test, it is cle
32、arly determined that prescribed or proper procedures were not followed in preparing the sample or sample(s), or in conducting the tests, the test shall be considered invalid, without regard to whether the test was actually completed, or whether the test results met, or failed to meet, the requiremen
33、t. That test shall be repeated, following proper prescribed procedures. In this case, the requirement for doubling the number of samples does not apply.9 Technical delivery conditionsTechnical delivery conditions shall meet the requirements given in ISO 544.10 DesignationAn example of a designation
34、of a rod for gas welding which has a chemical composition within the limits for the alloy symbol III in accordance with Table 1:ISO 20378 - O IIIwhere:ISO 20378 = standard number;O = the welding process (oxyfuel welding);III = chemical composition of rod (see Table 1). ISO 2017 All rights reserved 3
35、BS ISO 20378:2017ISO 20378:2017(E)Annex A (informative) Welding behaviourRods with symbol I to VI have different welding behaviour. In Table A.1, the typical welding behaviour of different rods is listed.Table A.1 Welding behaviour of different rodsBehaviourRod symbolI II III IV V VIFluidity Highly
36、fluid Less fluid ViscousSpatter Much Less NoSensitive to porosityYes Yes No4 ISO 2017 All rights reservedBS ISO 20378:2017ISO 20378:2017(E)Bibliography1 EN 12536:2000, Welding consumables Rods for gas welding of nonalloy and creepresisting steels Classification2 AWS A5.2/A5M: 2007, Specification for
37、 Carbon and Low-Alloy Steel Rods for Oxyfuel Gas Welding3 ASTM E350, Standard Test Methods for Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron4 BS 6200-3, Sampling of iron, steel and other ferrous metals Part 3: Methods of analysis5 CEN/CR 1
38、0261ECISS information circular 11 Iron and Steel Review of available methods of chemical analysis6 Handbuch fr Eisenhttenlaboratorium, VdEh, Dsseldorf ISO 2017 All rights reserved 5BS ISO 20378:2017ISO 20378:2017(E) ISO 2017 All rights reservedICS 25.160.20Price based on 5 pagesThis page deliberatel
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