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1、 Reference number ISO 14341:2002(E) ISO 2002 INTERNATIONAL STANDARD ISO 14341 First edition 2002-11-01 Welding consumables Wire electrodes and deposits for gas shielded metal arc welding of non alloy and fine grain steels Classification Produits consommables pour le soudage Fils-lectrodes et dpts po
2、ur le soudage larc sous protection gazeuse des aciers non allis et grains fins Classification Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:27:08 MDTNo reproduction or netwo
3、rking permitted without license from IHS -,-,- ISO 14341:2002(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed o
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6、inform the Central Secretariat at the address given below. ISO 2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing fr
7、om either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2002 All rights reserved Copyright Internati
8、onal Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:27:08 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14341:2002(E) ISO 2002 All rights reserved iii Contents Page F
9、oreword iv Introduction. v 1 Scope 1 2 Normative references 1 3 Classification. 2 4 Symbols and requirements 2 4.1 Symbol for the product/process 2 4.2 Symbol for strength and elongation of all-weld metal 3 4.3 Symbol for impact properties of all-weld metal. 3 4.4 Symbol for shielding gas 4 4.5 Symb
10、ol for the chemical composition of wire electrodes 4 5 Mechanical tests 8 5.1 Preheating and interpass temperatures . 8 5.2 Welding conditions and pass sequence. 9 5.3 PWHT condition. 9 6 Chemical analysis. 10 7 Retest 10 8 Technical delivery conditions 10 9 Example of designation 10 Copyright Inter
11、national Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:27:08 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14341:2002(E) iv ISO 2002 All rights reserved Foreword ISO
12、 (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 body interested in a subject for which a technical com
13、mittee 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 Electrotechnical Commission (IEC) on all matters of electrot
14、echnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the mem
15、ber 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 International Standard may be the subject of patent rights. ISO shall not be held responsibl
16、e for identifying any or all such patent rights. ISO 14341 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 3, Welding consumables. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Stan
17、dards 1/9972545001 Not for Resale, 04/20/2007 04:27:08 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14341:2002(E) ISO 2002 All rights reserved v Introduction This International Standard recognizes that there are two somewhat different approaches in the global market
18、to classifying a given wire electrode, and allows for either or both to be used, to suit a particular market need. Application of either type of classification designation (or both where suitable) identifies a product as classified according to this International Standard. This International Standar
19、d provides a classification in order to designate wire electrodes in terms of their chemical composition and, where required, in terms of the yield strength, tensile strength and elongation of the all-weld metal. The ratio of yield to tensile strength of weld metal is generally higher than that of p
20、arent 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 material. Where the application of the material requires matching tensile strength, therefore, selection o
21、f the consumable should be made by reference to column 3 of Table 1A or 1B. It should be noted that the mechanical properties of all-weld metal test specimens used to classify the electrodes will vary from those obtained in production joints because of differences in welding procedure such as electr
22、ode size, width of weave, welding position and material composition. 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 member body in the users country, a complete listing of which can be found at www.iso
23、.org. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:27:08 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for
24、Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:27:08 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 14341:2002(E) ISO 2002 All rights reserved 1 Welding consumab
25、les Wire electrodes and deposits for gas shielded metal arc welding of non alloy and fine grain steels Classification 1 Scope This International Standard specifies requirements for classification of wire electrodes in the as-welded condition and in the post weld heat-treated condition for gas shield
26、ed metal arc welding of non alloy and fine grain steels with a minimum yield strength of up to 500 N/mm2 or a minimum tensile strength of up to 570 N/mm2. One wire electrode can be tested and classified with different shielding gases. This document constitutes a combined specification providing clas
27、sification utilizing a system based upon the yield strength and the average impact energy of 47 J of all-weld metal, or utilizing a system based upon the tensile strength and the average impact energy of 27 J of all-weld metal. 1) Paragraphs and tables which carry the suffix letter “A” are applicabl
28、e only to wire electrodes classified to the system based upon the yield strength and the average impact energy of 47 J of all-weld metal in accordance with this International Standard. 2) Paragraphs and tables which carry the suffix letter “B” are applicable only to wire electrodes classified to the
29、 system based upon the tensile strength and the average impact energy of 27 J of all-weld metal in accordance with this International Standard. 3) Paragraphs and tables which have neither the suffix letter “A” nor the suffix letter “B” are applicable to all wire electrodes classified in accordance w
30、ith this International Standard. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not
31、apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members
32、of ISO and IEC maintain registers of currently valid International Standards. ISO 31-0:1992, Quantities and units Part 0: General principles ISO 544, Welding consumables Technical delivery conditions for welding filler metals Type of product, dimensions, tolerances and marking ISO 13916, Welding Gui
33、dance 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 guideli
34、nes 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 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545
35、001 Not for Resale, 04/20/2007 04:27:08 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 14341:2002(E) 2 ISO 2002 All rights reserved 3 Classification Classification designations are based upon two approaches to indicate the tensile properties and the impact properties o
36、f the all-weld metal obtained with a given electrode. The two designation approaches include additional designators for some other classification requirements, but not all, as will be clear from the following sections. In most cases, a given commercial product can be classified to the classification
37、 requirements in both systems. Then either or both classification designations can be used for the product. A wire electrode shall be classified according to its chemical composition as in Table 3A or Table 3B. A weld deposit shall be classified with additional symbols according to the mechanical pr
38、operties of its all-weld metal, using a shielding gas from a specific group. 3A Classification by yield strength and 47 J impact energy The classification is divided into five parts: 1) the first part gives a symbol indicating the product/process to be identified; 2) the second part gives a symbol i
39、ndicating the strength and elongation of the all-weld metal (see Table 1A); 3) the third part gives a symbol indicating the impact properties of all-weld metal (see Table 2); 4) the fourth part gives a symbol indicating the shielding gas used (see 4.4); 5) the fifth part gives a symbol indicating th
40、e chemical composition of the wire electrode used (see Table 3A). 3B Classification by tensile strength and 27 J impact energy The classification is divided into five parts: 1) the first part gives a symbol indicating the product/process to be identified; 2) the second part gives a symbol indicating
41、 the strength and elongation of the all-weld metal in either the as-welded or post weld heat- treated condition (see Table 1B); 3) the third part gives a symbol indicating the impact properties of all-weld metal in the same condition as specified for the tensile strength (see Table 2). The letter “U
42、” after this symbol indicates that the deposit meets an average optional requirement of 47 J at the designated Charpy test temperature; 4) the fourth part gives a symbol indicating the shielding gas used (see 4.4); 5) the fifth part gives a symbol indicating the chemical composition of the wire elec
43、trode used (see Table 3B). 4 Symbols and requirements 4.1 Symbol for the product/process The symbol of weld deposit by the gas shielded metal arc welding process shall be the letter “G” placed at the beginning of the designation. The symbol of a wire electrode for the gas shielded metal arc welding
44、shall be the letter “G” placed at the beginning of the wire electrode designation. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 04:27:08 MDTNo reproduction or networking permi
45、tted without license from IHS -,-,- ISO 14341:2002(E) ISO 2002 All rights reserved 3 4.2 Symbol for strength and elongation of all-weld metal 4.2A Classification by yield strength and 47 J impact energy The symbols in Table 1A indicate yield strength, tensile strength and elongation of the all-weld
46、metal in the as-welded condition determined in accordance with clause 5. Table 1A Symbols for strength and elongation of all-weld metal Minimum yield strength a Tensile strength Minimum elongation b Symbol N/mm2 N/mm2 % 35 355 440 to 570 22 38 380 470 to 600 20 42 420 500 to 640 20 46 460 530 to 680
47、 20 50 500 560 to 720 18 a For yield strength the lower yield (ReL) is used when yielding occurs, otherwise the 0,2 % proof strength (Rp0,2) is used. b Gauge length is equal to five times the test specimen diameter. 4.2B Classification by tensile strength and 27 J impact energy The symbols in Table
48、1B indicate yield strength, tensile strength and elongation of the all-weld metal in the as-welded condition or in the post weld heat- treated condition determined in accordance with clause 5. Table 1B Symbols for strength and elongation of all-weld metal Minimum yield strength b Tensile strength Minimum elongation c Symbol a N/mm2 N/mm2 % 43X 330 430 to 600 20 49X 390 490 to 670 18 55X 460 550 to 740 17 57X 490 570 to 770 17 a) X is “A” or “P”, where “A” indi