1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 26304:2011Welding consumables Solidwire electrodes, tubular coredelectrodes and electrode-fluxcombinations for submergedarc welding of high strengthsteels Classificatio
2、n (ISO26304:2011)BS EN ISO 26304:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO26304:2011. It supersedes BS EN ISO 26304:2009 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/39, Welding consumables.A l
3、ist of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 72585 2ICS 25.160.20Compliance with a British
4、 Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 26304 August 20
5、11 ICS 25.160.20 Supersedes EN ISO 26304:2009English Version Welding consumables - Solid wire electrodes, tubular cored electrodes and electrode-flux combinations for submerged arc welding of high strength steels - Classification (ISO 26304:2011)Produits consommables pour le soudage - Fils-lectrodes
6、 pleins, fils-lectrodes fourrs et couples lectrodes-flux pour le soudage larc sous flux des aciers haute rsistance - Classification (ISO 26304:2011) Schweizustze - Massivdrahtelektroden, Flldrahtelektroden und Draht-Pulver-Kombinationen zum Unterpulverschweien von hochfesten Sthlen - Einteilung (ISO
7、 26304:2011) This European Standard was approved by CEN on 11 July 2011. 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 bibliogra
8、phical 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 responsibil
9、ity 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, France, Germany, Greece,
10、Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management C
11、entre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 26304:2011: EBS EN ISO 26304:2011EN ISO 26304:2011 (E) 3 Foreword This document (EN ISO 26304:2011) has been prepared by Technical Co
12、mmittee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Committee CEN/TC 121 “Welding” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the lates
13、t by February 2012, and conflicting national standards shall be withdrawn at the latest by February 2012. 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
14、such patent rights. This document supersedes EN ISO 26304:2009. 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, Esto
15、nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 26304:2011 has been approved by CEN
16、 as a EN ISO 26304:2011 without any modification. BS EN ISO 26304:2011ISO 26304:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Classification .2 4 Symbols and requirements 3 4.1 Symbol for the product or process .3 4.2 Symbols for
17、the tensile properties of the all-weld metal deposit.3 4.3 Symbol for the impact properties of the all-weld metal 4 4.4 Symbol for the type of welding flux.5 4.5 Symbol for the chemical composition of solid wire electrodes and of the all-weld metal from tubular cored electrode-flux combinations .5 4
18、.6 Symbol for the post-weld heat treatment11 4.7 Symbol for hydrogen content of deposited metal .12 5 Mechanical tests13 5.1 Tensile and impact tests.13 5.2 Preheating and interpass temperature13 5.3 Welding conditions and pass sequence.13 6 Chemical analysis .14 7 Rounding procedure .14 8 Retests15
19、 9 Technical delivery conditions 15 10 Examples of designation 15 Annex A (informative) Possible risk of weld metal hydrogen cracking 17 Bibliography18 BS EN ISO 26304:2011ISO 26304:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwid
20、e 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
21、 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. International Standards are drafted in ac
22、cordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard req
23、uires approval by at least 75 % of the member bodies casting a vote. 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. ISO 26304 was prepared by Techni
24、cal Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 3, Welding consumables. This second edition cancels and replaces the first edition (ISO 26304:2008), of which it constitutes a minor revision. It also incorporates the Technical Corrigendum ISO 26304:2008/Cor.1:2009. Requests for
25、 official interpretations of any aspect of this International Standard 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. BS EN ISO 26304:2011ISO 26304:2011(E) ISO 2011 All rights reserved vIntrodu
26、ction This International Standard recognizes that there are two somewhat different approaches in the global market to classifying a given wire electrode, tubular cored electrode, and electrode-flux combination, and allows for either or both to be used, to suit a particular market need. Application o
27、f either type of classification designation (or of both where suitable) identifies a product as classified in accordance with this International Standard. The classification in accordance with system A is mainly based on EN 142953. The classification in accordance with system B is mainly based upon
28、standards used around the Pacific Rim. Future revisions aim to merge the two approaches into a single classification system. This International Standard provides a classification for the designation of solid wire electrodes in terms of their chemical composition, tubular cored electrodes in terms of
29、 the deposit composition obtained with a particular submerged arc flux, and, where required, electrode-flux combinations in terms of the yield strength, tensile strength, elongation, and impact properties of the all-weld metal deposit. The ratio of yield to tensile strength of weld metal is generall
30、y higher than that of parent material. Users should note that matching weld metal yield strength to parent metal yield strength does not necessarily ensure that the weld metal tensile strength matches that of the parent material. Thus, where the application requires matching tensile strength, select
31、ion of the consumable should be made by reference to column 3 of Table 1A or Table 1B, as appropriate. Although combinations of electrodes and fluxes supplied by individual companies may have the same classification, the combination of an electrode with a flux from one manufacturer versus the flux f
32、rom another manufacturer, both fluxes having the same classification, may not be interchangeable unless verified in accordance with this International Standard. Two tubular cored wires of the same classification may likewise produce different results with the same flux. The mechanical properties of
33、the all-weld metal test specimens used to classify the electrode-flux combinations vary from those obtained in production joints because of differences in welding procedures such as electrode size, width of weave, welding position, and material composition. BS EN ISO 26304:2011BS EN ISO 26304:2011IN
34、TERNATIONAL STANDARD ISO 26304:2011(E) ISO 2011 All rights reserved 1Welding consumables Solid wire electrodes, tubular cored electrodes and electrode-flux combinations for submerged arc welding of high strength steels Classification 1 Scope This International Standard specifies requirements for cla
35、ssification of solid wire electrodes, tubular cored electrodes, and electrode-flux combinations (the all-weld metal deposits) in the as-welded condition and in the post-weld heat-treated condition for submerged arc welding of high strength steels with a minimum yield strength greater than 500 MPa or
36、 a minimum tensile strength greater than 570 MPa. One flux can be tested and classified with different electrodes. One electrode can be tested and classified with different fluxes. The solid wire electrode is also classified separately based on its chemical composition. This International Standard i
37、s a combined specification providing for classification utilizing a system based upon the yield strength and average impact energy of 47 J for the all-weld metal, or utilizing a system based upon the tensile strength and average impact energy of 27 J for the all-weld metal. a) Clauses, subclauses an
38、d tables which carry the suffix letter “A” are applicable only to solid wire electrodes, tubular cored electrodes and the all-weld metal deposits classified to the system based upon the yield strength and the average impact energy of 47 J for the all-weld metal obtained with electrode-flux combinati
39、ons in accordance with this International Standard. b) Clauses, subclauses and tables which carry the suffix letter “B” are applicable only to solid wire electrodes, tubular cored electrodes and the all-weld metal deposits classified to the system based upon the tensile strength and the average impa
40、ct energy of 27 J for the all-weld metal obtained with electrode-flux combinations in accordance with this International Standard. c) Clauses, subclauses and tables which do not have either the suffix letter “A” or the suffix letter “B” are applicable to all solid wire electrodes, tubular cored elec
41、trodes and electrode-flux combinations classified in accordance with this International Standard. For comparison purposes, some tables include requirements for electrodes classified in accordance with both systems, placing individual electrodes from the two systems, which are similar in composition
42、and properties, on adjacent lines in the particular table. In a particular line of the table that is mandatory in one system, the symbol for the similar electrode from the other system is indicated in parentheses. By appropriate restriction of the formulation of a particular electrode, it is often,
43、but not always, possible to produce an electrode that can be classified in both systems, in which case the electrode, or its packaging, may be marked with the classification in either or both systems. 2 Normative references The following referenced documents are indispensable for the application of
44、this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 544, Welding consumables Technical delivery conditions for filler materials and fluxes Type of product, dimensions, toler
45、ances and markings ISO 3690, Welding and allied processes Determination of hydrogen content in arc weld metal BS EN ISO 26304:2011ISO 26304:2011(E) 2 ISO 2011 All rights reservedISO 6847, Welding consumables Deposition of a weld metal pad for chemical analysis ISO 13916, Welding Guidance on the meas
46、urement of preheating temperature, interpass temperature and preheat maintenance temperature ISO 14174, Welding consumables Fluxes for submerged arc welding and electroslag welding Classification ISO 14344, Welding consumables Procurement of filler materials and fluxes ISO 15792-1:2000, Welding cons
47、umables Test methods Part 1: Test methods for all-weld metal test specimens in steel, nickel and nickel alloys ISO 80000-1:2009, Quantities and units Part 1: General 3 Classification Classification designations are based upon two approaches to indicate the tensile properties and the impact propertie
48、s of the all-weld metal obtained with a given electrode-flux combination. The two designation approaches include additional designators for the chemical composition of a solid wire electrode or the chemical composition of the all-weld metal deposit obtained with a tubular cored electrode and a parti
49、cular flux. The two designation approaches include additional designators for some other classification requirements, but not all, as is clear from the following clauses. A given commercial product may be classified to the classification requirements in both systems; then either or both classification designations may be used for the product. The classification includes the all-weld metal properties obtained with a specific electrode-flux combination as given in 3A and 3B. A solid wire electrode shall be classified i
