1、August 2012Translation by DIN-Sprachendienst.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
2、25.160.20!$za“1908762www.din.deDDIN EN ISO 21952Welding consumables Wire electrodes, wires, rods and deposits for gas-shielded arc weldingof creep-resisting steels Classification (ISO 21952:2012);English version EN ISO 21952:2012,English translation of DIN EN ISO 21952:2012-08Schweizustze Drahtelekt
3、roden, Drhte, Stbe und Schweigut zum Schutzgasschweien vonwarmfesten Sthlen Einteilung (ISO 21952:2012);Englische Fassung EN ISO 21952:2012,Englische bersetzung von DIN EN ISO 21952:2012-08Produits consommables pour le soudage Fils-lectrodes, fils, baguettes et dpts pour le soudage larc sous gaz de
4、protectiondes aciers rsistant au fluage Classification (ISO 21952:2012);Version anglaise EN ISO 21952:2012,Traduction anglaise de DIN EN ISO 21952:2012-08SupersedesDIN EN ISO 21952:2008-02www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises
5、22 pages07.12 DIN EN ISO 21952:2012-08 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” (Secretariat: AFNOR, France) in collaboration with Technical Committee CEN/TC 121 “Welding” (Secretariat:
6、DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Schweien und verwandte Verfahren (Welding and Allied Processes Standards Committee), Working Committee NA 092-00-03 AA Schweizustze (DVS AG W 5). This International Standard is a “cohabitation standard” in
7、 which two different approaches to the same subject are specified, designated as “system A” and “system B”. System A classification mainly reflects the European approach, while classification according to system B is mainly based on standards used around the Pacific Rim. It should be noted that, whe
8、n using this standard, the classification system (A or B) according to which welding consumables are to be manufactured or supplied must be laid down in advance. Requests for official interpretations of any aspect of this International Standard should be addressed to the users national standards org
9、anization, which will pass them on to the secretariat of ISO/TC 44/SC 3. A full list of national standards organizations is available from www.iso.org. The DIN Standards corresponding to the International Standards referred to in the EN are as follows: ISO 544 DIN EN ISO 544 ISO 13916 DIN EN ISO 139
10、16 ISO 14175:2008 DIN EN ISO 14175:2008 ISO 14344 DIN EN ISO 14344 ISO 15792-1 DIN EN ISO 15792-1 Amendments This standard differs from DIN EN ISO 21952:2008-02 as follows: a) in Subclause 4.3B, three new symbols have been added; b) in Subclause 4.4B, the symbols for shielding gases have been brough
11、t in line with ISO 14175; c) in Tables 1 and 2, B side, six new alloys have been added; d) Clause 6 “Chemical analysis” has been rendered more precise; e) in Clause 10, the examples of designation have been revised. Previous editions DIN 8575-1: 1970-09, 1983-12, 1984-04 DIN 8575-2: 1970-09, 1977-12
12、 DIN 8575-3: 1970-09 DIN EN 12070: 2000-01 DIN EN ISO 21952: 2008-02 DIN EN ISO 21952:2012-08 3 National Annex NA (informative) Bibliography DIN EN ISO 544, Welding consumables Technical delivery conditions for welding filler metals Type of product, dimensions, tolerances and marking DIN EN ISO 1391
13、6, Welding Guidance on the measurement of preheating temperature, interpass tempera-ture and preheat maintenance temperature DIN EN ISO 14175, Welding consumables Gases and gas mixtures for fusion welding and allied processes DIN EN ISO 15792-1, Welding consumables Test methods Part 1: Test methods
14、for all-weld metal test specimens in steel, nickel and nickel alloys DIN EN ISO 14344, Welding consumables Procurement of filler materials and fluxesDIN EN ISO 21952:2012-08 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 21952 May 2012 ICS 25.160.20 Super
15、sedes EN ISO 21952:2007English Version Welding consumables - Wire electrodes, wires, rods and deposits for gas shielded arc welding of creep-resisting steels - Classification (ISO 21952:2012) Produits consommables pour le soudage - Fils-lectrodes, fils, baguettes et dpts pour le soudage larc sous ga
16、z de protection des aciers rsistant au fluage - Classification (ISO 21952:2012) Schweizustze - Drahtelektroden, Drhte, Stbe und Schweigut zum Schutzgasschweien von warmfesten Sthlen - Einteilung (ISO 21952:2012) This European Standard was approved by CEN on 13 April 2012. CEN members are bound to co
17、mply 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 obtained on application to the CEN-CENEL
18、EC 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 CEN-CENELEC Management Centre has the
19、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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
20、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 21952:2012: EEUROPEAN COMM
21、ITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGContents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references 5 3 Classification 6 4 Symbols and requirements . 6 4.1 Symbol for the product or process 6 4.2 Symbol for the chemical composition of w
22、ire electrodes, wires, and rods . 6 4.3 Symbol for the mechanical properties of all-weld metal 7 4.4 Symbol for shielding gas 7 5 Mechanical tests. 14 5.1 Preheating and interpass temperatures 14 5.2 Welding conditions and pass sequence 14 6 Chemical analysis 15 7 Rounding procedure 15 8 Retest 15 9
23、 Technical delivery conditions . 15 10 Examples of designation . 16 Bibliography 18 2DIN EN ISO 21952:2012-08 EN ISO 21952:2012 (E) Foreword This document (EN ISO 21952:2012) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Committee C
24、EN/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 latest by November 2012, and conflicting national standards shall be withdrawn at the latest by N
25、ovember 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 such patent rights. This document supersedes EN ISO 21952:2007. According to the CEN/CENELEC
26、 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
27、Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 21952:2012 has been approved by CEN as a EN ISO 21952:2012 without any modification. 3DIN EN ISO 21952:2012-08 EN ISO 2
28、1952:2012 (E) Introduction This International Standard was prepared in collaboration with the International Institute of Welding. It recognizes that there are two somewhat different approaches in the global market to classifying a given wire electrode, wire, rod or deposit, and allows for either or
29、both to be used, to suit a particular market need. Application of 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 12070:19991.
30、 The classification in accordance with system B is mainly based upon standards used around the Pacific Rim. This International Standard proposes a classification system for wire electrodes, wires and rods in terms of their chemical composition and, where required, in terms of the yield strength, ten
31、sile strength and elongation of the all-weld metal deposit. The ratio of yield to tensile strength of weld metal is generally higher than that of parent metal. Users should note that matching weld metal yield strength to parent metal yield strength does not necessarily ensure that the weld metal ten
32、sile strength matches that of the parent material. Where the application requires matching tensile strength, therefore, selection of the consumable should be made by reference to column 4 of Table 2. It should be noted that the mechanical properties of all-weld metal test pieces used to classify the
33、 electrodes, wires and rods vary from those obtained in production joints because of differences in welding procedure such as electrode size, width of weave, welding position and material composition. 4DIN EN ISO 21952:2012-08 EN ISO 21952:2012 (E) 1 Scope This International Standard specifies requi
34、rements for classification of wire electrodes, wires and rods for gas shielded metal arc welding and tungsten inert-gas welding of creep-resisting steels, and for their deposits in the as-welded or post-weld heat-treated condition. One wire electrode can be tested and classified with different shiel
35、ding gases. This International Standard is a combined specification providing for classification utilizing a system based upon the chemical composition of wire electrodes, wires and rods with requirements for yield strength and average impact energy of 47 J of all-weld metal, or utilizing a system b
36、ased upon the tensile strength of the all-weld metal deposits and the chemical composition of wire electrodes, wires and rods. a) Clauses, subclauses and tables which carry the suffix letter “A” are applicable only to wire electrodes, wires, rods and deposits classified in accordance with the system
37、 based upon the chemical composition with requirements for yield strength and the average impact energy of 47 J of all-weld metal deposits under this International Standard. b) Clauses, subclauses and tables which carry the suffix letter “B” are applicable only to wire electrodes, wires, rods and de
38、posits classified in accordance with the system based upon the tensile strength of all-weld metal deposits and the chemical composition of wire electrodes, wires and rods under this International Standard. c) Clauses, subclauses and tables which do not have either the suffix letter “A” or the suffix
39、 letter “B” are applicable to all wire electrodes, wires, rods and deposits classified under this International Standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undate
40、d 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, tolerances and markings ISO 13916, Welding Guidance on the measurement of preheating
41、 temperature, interpass temperature and preheat maintenance temperature ISO 14175:2008, Welding consumables Gases and gas mixtures for fusion welding and allied processes ISO 14344, Welding consumables Procurement of filler materials and fluxes ISO 15792-1, Welding consumables Test methods Part 1: T
42、est methods for all-weld metal test specimens in steel, nickel and nickel alloys ISO 80000-1:2009, Quantities and units Part 1: General 5DIN EN ISO 21952:2012-08 EN ISO 21952:2012 (E) 3 Classification Classification designations are based upon two approaches to indicate the chemical composition of t
43、he wire electrode, wire or rod, and tensile properties and impact properties of the all-weld metal deposits obtained with a given wire electrode, wire or rod. The two designation approaches include additional designators for some other classification requirements, but not all, as is clear from the f
44、ollowing subclauses. In most cases, a given commercial product can be classified in accordance with both systems. Then either or both classification designations can be used for the product. A wire electrode, wire or rod shall be classified in accordance with its chemical composition as given in Tab
45、le 1. When the wire electrode, wire, rod or deposit is classified in combination with a shielding gas, the classification shall be prefixed with a symbol in accordance with Clause 4 as appropriate. 3A Classification by chemical composition 3B Classification by tensile strength and chemical compositi
46、on The classification is divided into two parts: The classification is divided into four parts: 1) the first part gives a symbol indicating theproduct or process to be identified; 1) the first part gives a symbol indicating the product or process to be identified; 2) the second part gives a symbol i
47、ndicating the strength and elongation of the all-weld-metal deposit in the post weld heat-treated condition (see Table 2); 3) the third part gives a symbol indicating the shielding gas used (see 4.4); 2) the second part gives a symbol indicating thechemical composition of the wire electrode, wire, o
48、r rod used (see Table 1). 4) the fourth part gives a symbol indicating the chemical composition of the wire electrode, wire or rod used (see Table 1). 4 Symbols and requirements 4.1 Symbol for the product or process The symbol for the wire electrode, wire or rod used in the arc welding process shall be the letter G (gas shielded metal arc welding) and/or W (gas shielded arc welding with non-consumable tungsten electrode). 4.2 Symbol for the chemical composition of wire electrodes, wir
