1、BRITISH STANDARDBS EN ISO 18276:2006Welding consumables Tubular cored electrodes for gas-shielded and non-gas-shielded metal arc welding of high-strength steels ClassificationThe European Standard EN ISO 18276:2006 has the status of a British StandardICS 25.160.20g49g50g3g38g50g51g60g44g49g42g3g58g4
2、4g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 18276:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 20
3、06 BSI 2006ISBN 0 580 48441 6National forewordThis British Standard is the official English language version of EN ISO 18276:2006. It is identical with ISO 18276:2005. It supersedes BS EN 12535:2000 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee WEE/3
4、9, Welding consumables, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developm
5、ents and promulgate them in the UK.A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the s
6、ection entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.
7、 Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 23 and a back cover
8、.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 18276June 2006ICS 25.160.20 Supersedes EN 12535:2000 English VersionWelding consumables - Tu
9、bular cored electrodes for gas-shielded and non-gas-shielded metal arc welding of high-strength steels - Classification (ISO 18276:2005)Produits consommables pour le soudage - Fils-lectrodesfourrs pour le soudage larc avec ou sans gaz deprotection des aciers haute rsistance - Classification(ISO 1827
10、6:2005)Schweizustze - Flldrahtelektroden zum Metall-Schutzgasschweien mit und ohne Schutzgas vonhochfesten Sthlen - Einteilung (ISO 18276:2005)This European Standard was approved by CEN on 2 June 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condi
11、tions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three off
12、icial versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Be
13、lgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZ
14、ATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 18276:2006: EForeword The text of ISO 18276:2005 has bee
15、n prepared by Technical Committee ISO/TC 44 “Welding and allied processes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 18276:2006 by Technical Committee CEN/TC 121 “Welding“, the secretariat of which is held by DIN. This European Standard shall be gi
16、ven the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2006, and conflicting national standards shall be withdrawn at the latest by December 2006. This document supersedes EN 12535:2000. According to the CEN/CENELEC Internal Reg
17、ulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
18、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 18276:2005 has been approved by CEN as EN ISO 18276:2006 without any modifications. EN ISO 18276:2006Reference numberISO 18276:2005(E)INTERNATIONAL STANDARD ISO182
19、76First edition2005-02-15Welding consumables Tubular cored electrodes for gas-shielded and non-gas-shielded metal arc welding of high-strength steels Classification Produits consommables pour le soudage Fils-lectrodes fourrs pour le soudage larc avec ou sans gaz de protection des aciers haute rsista
20、nce Classification ii iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Normative references . 1 3 Classification. 2 4 Symbols and requirements 4 4.1 Symbol for the product/process 4 4.2 Symbol for tensile properties of all-weld metal .4 4.3 Symbol for impact properties of all-weld metal. 4 4.
21、4 Symbol for chemical composition of all-weld metal . 5 4.5 Symbol for type of electrode core or the usability characteristics of the electrodes 8 4.6 Symbol for shielding gas . 9 4.7 Symbol for welding position 9 4.8 Symbol for hydrogen content of deposited metal. 10 4.9 Symbol for conditions of po
22、st-weld heat treatment 10 4.10 Rounding-off procedure. 10 5 Mechanical tests . 10 5.1 Preheating and interpass temperatures .11 5.2 Pass sequence 12 5.3 Post-weld heat treatment (PWHT) condition 12 6 Chemical analysis . 13 7 Fillet weld test . 13 8 Retest . 14 9 Technical delivery conditions 14 10 E
23、xamples of designations 14 Annex A (informative) Classification systems. 16 Annex B (informative) Description of composition designations for electrodes in the classification system based upon tensile strength and average impact energy of 27 J 19 Annex C (informative) Description of types of electro
24、de core in the classification system based upon yield strength and average impact energy of 47 J. 20 Annex D (informative) Descriptions of types of usability characteristics in the classification system based upon tensile strength and average impact energy of 27 J 21 Annex E (informative) Notes on h
25、ydrogen content. 23 EN ISO 18276:2006iv 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 bo
26、dy 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 Electrot
27、echnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance 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 b
28、y the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires 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 ri
29、ghts. ISO shall not be held responsible for identifying any or all such patent rights. ISO 18276 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 3, Welding consumables. EN ISO 18276:2006vIntroduction This International Standard proposes a classification s
30、ystem for tubular cored electrodes in terms of the tensile properties, impact properties, chemical composition of the all-weld metal, type of electrode core, shielding gas and welding position. The ratio of yield strength to tensile strength of the weld metal is generally higher than that of the par
31、ent metal. Users should note that matching weld metal yield strength to parent metal yield strength will not necessarily ensure that the weld metal tensile strength matches that of the parent metal. Where the application requires matching tensile strength, therefore, selection of the consumable shou
32、ld be made by reference to column 3 of Table 1A or Table 1B. It should be noted that the mechanical properties of all-weld metal test specimens used to classify tubular cored electrodes will differ from those obtained with production joints because of differences in welding procedure such as electro
33、de size, width of weave, welding position and parent metal composition. The classification in accordance with system A is mainly based on EN 12535:2000, Welding consumables Tubular cored electrodes for gas shielded metal arc welding of high strength steels Classification. The classification in accor
34、dance with system B is mainly based upon standards used around the Pacific Rim. Requests for official interpretation of any aspect of this International Standard should be directed to the Secretariat of ISO/TC 44/SC 3 via the users national standardization body. A complete listing of these bodies ca
35、n be found at . EN ISO 18276:2006blank1Welding consumables Tubular cored electrodes for gas-shielded and non-gas-shielded metal arc welding of high-strength steels Classification 1 Scope This International Standard specifies requirements for classification of tubular cored electrodes with or without
36、 a gas shield for metal arc welding of high-strength steels in the as-welded condition or in the post-weld heat-treated condition with a minimum yield strength higher than 550 MPa or a minimum tensile strength higher than 590 MPa. One tubular cored electrode can be tested and classified with differe
37、nt shielding gases, if used with more than one. This document is a combined specification providing classification utilizing a system based upon the yield strength and an average impact energy of 47 J of the all-weld metal, or utilizing a system based upon the tensile strength and an average impact
38、energy of 27 J of the all-weld metal. 1) Subclauses and tables which carry the suffix letter “A” are applicable only to tubular cored electrodes classified under the system based upon the yield strength and an average impact energy of 47 J of the all-weld metal given in this International Standard.
39、2) Subclauses and tables which carry the suffix letter “B” are applicable only to tubular cored electrodes classified under the system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal given in this International Standard. 3) Subclauses and tables which do no
40、t have either the suffix letter “A” or the suffix letter “B” are applicable to all tubular cored electrodes classified under this International Standard. It is recognized that the operating characteristics of tubular cored electrodes can be modified by the use of pulsed current but, for the purposes
41、 of this International Standard, pulsed current is not used for determining the electrode classification. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, th
42、e latest edition of the referenced document (including any amendments) applies. ISO 31-0:1992, Quantities and units Part 0: General principles ISO 544, Welding consumables Technical delivery conditions for welding filler materials Type of product, dimensions, tolerances and markings ISO 3690, Weldin
43、g and allied processes Determination of hydrogen content in ferritic steel arc weld metal ISO 6847, Welding consumables Deposition of a weld metal pad for chemical analysis ISO 6947:1990, Welds Working positions Definitions of angles of slope and rotation EN ISO 18276:20062 ISO 13916, Welding Guidan
44、ce on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature ISO 14175:1997, Welding consumables Shielding gases for arc welding and cutting ISO 14344, Welding and allied processes Flux and gas shielded electrical welding processes Procurement guidelines
45、 for consumables ISO 15792-1:2000, Welding consumables Test methods Part 1: Test methods for all-weld metal test specimens in steel, nickel and nickel alloys ISO 15792-3, Welding consumables Test methods Part 3: Classification testing of positional capacity and root penetration of welding consumable
46、s in a fillet weld 3 Classification Classification designations are based upon two approaches to indicate the tensile properties and the impact properties of the all-weld metal obtained with a given electrode. The two designation approaches include additional designators for some other classificatio
47、n requirements, but not all, as will be clear from the following subclauses. In most cases, a given commercial product can be classified under both systems. Then either or both classification designations can be used for the product. The classification includes all-weld metal properties obtained wit
48、h a tubular cored electrode and appropriate shielding gas combination as given below. With the exception of the symbol for welding position, which is based on ISO 15792-3, the classification of gas-shielded tubular cored electrodes is based on an electrode size of 1,2 mm or, if this size is not manu
49、factured, the next larger diameter manufactured, and the classification of self-shielded tubular cored electrodes is based on a diameter of 2,4 mm or the largest diameter manufactured if less than 2,4 mm. 3.1A Classification by yield strength and 47 J impact energy 3.1B Classification by tensile strength and 27 J impact energy The classification designation is divided into nineparts: The classification designation is divided into nine parts: 1) the first part (T) indicates a tubular coredelectrode; 1) the f
