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1、 Reference number ISO 14171:2002(E) ISO 2002 INTERNATIONAL STANDARD ISO 14171 First edition 2002-11-01 Welding consumables Wire electrodes and wire-flux combinations for submerged arc welding of non alloy and fine grain steels Classification Produits consommables pour le soudage Fils-lectrodes et co
2、uples fils- flux pour le soudage larc sous flux des aciers non allis et grains fins Classification ISO 14171:2002(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 typeface
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5、vent that a problem relating to it is found, please 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 photocop
6、ying and microfilm, without permission in writing from 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
7、 ii ISO 2002 All rights reserved ISO 14171:2002(E) ISO 2002 All rights reserved iii Contents Page Foreword iv Introduction. v 1 Scope 1 2 Normative references 1 3 Classification. 2 4 Symbols and requirements 3 4.1 Symbol for the product/process 3 4.2 Symbols for tensile properties 3 4.3 Symbols for
8、impact properties of all-weld metal or two-run welded joint 4 4.4 Symbols for type of welding flux. 5 4.5 Symbols for the chemical composition of wire electrodes 6 5 Mechanical tests 10 5.1 Multi-run technique. 10 5.2 Two-run technique 11 6 Chemical analysis. 12 7 Retests 12 8 Technical delivery con
9、ditions 12 9 Examples of designation 12 ISO 14171:2002(E) iv ISO 2002 All rights reserved 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 ou
10、t 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 liaison with ISO, also take part in the work. ISO co
11、llaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical 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
12、Standards. Draft International Standards adopted by 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 element
13、s of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14171 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 3, Welding consumables. -,-,- ISO 14171:2002(E
14、) ISO 2002 All rights reserved v Introduction This International Standard recognizes that there are two somewhat different approaches in the global market to classifying a given wire-flux combination, and allows for either or both to be used, to suit a particular market need. Application of either t
15、ype of classification designation (or of both where suitable) identifies a product as classified according to this International Standard. This International Standard proposes a classification system for the designation of wire electrodes by chemical analyses and wire-flux combinations in terms of t
16、he 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 parent material. Users should note that matching weld metal yield strength to parent material yield strength will not necessarily ensure tha
17、t the weld metal tensile strength matches that of the parent material. Thus, where the application of the material requires matching tensile strengths, selection of the consumable should be made by reference to column 3 of Table 1A or 1B. Although combinations of wires and fluxes supplied by individ
18、ual companies may have the same grading, the individual wires and fluxes from different companies are not interchangeable unless verified according to this International Standard. It should be noted that the mechanical properties of all-weld metal test specimens used to classify the wire-flux combin
19、ations will vary from those obtained in production joints because of differences in welding procedures such as electrode size and parent 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
20、 the ISO member body in your country, a complete listing of which can be found at www.iso.org. INTERNATIONAL STANDARD ISO 14171:2002(E) ISO 2002 All rights reserved 1 Welding consumables Wire electrodes and wire-flux combinations for submerged arc welding of non alloy and fine grain steels Classific
21、ation 1 Scope This International Standard specifies requirements for the classification of wire-flux combinations and all-weld metal in the as-welded condition and in the post weld heat-treated condition for submerged arc welding of non alloy and fine grain steels with a minimum yield strength of up
22、 to 500 N/mm2 or a minimum tensile strength of up to 570 N/mm2. One flux may be classified with different wire electrodes. The wire electrode is also classified separately based on its chemical composition. This document constitutes a combined specification providing classification utilizing a syste
23、m based upon the yield strength and the average impact energy for all-weld metal of 47 J, or utilizing a system based upon the tensile strength and the average impact energy for all-weld metal of 27 J. 1) Paragraphs and tables which carry the suffix letter “A” are applicable only to wire-flux combin
24、ations and wire electrodes classified using the system based upon the yield strength and the average impact energy for all-weld metal of 47 J, in accordance with this International Standard. 2) Paragraphs and tables which carry the suffix letter “B” are applicable only to wire-flux combinations and
25、wire electrodes classified using the system based upon the tensile strength and the average impact energy for all-weld metal of 27 J, 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
26、-flux combinations and wire electrodes classified in accordance with this International Standard. Fluxes for the single-run and two-run techniques are classified on the basis of the two-run technique. 2 Normative references The following normative documents contain provisions which, through referenc
27、e in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying
28、 the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 31-0:1992, Quantities and units Part 0: General pr
29、inciples ISO 544, Welding consumables Technical delivery conditions for welding filler metals Type of product, dimensions, tolerances and marking ISO 13916, Welding Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature ISO 14174, Welding con
30、sumables Fluxes for submerged arc welding Classification ISO 14171:2002(E) 2 ISO 2002 All rights reserved ISO 14344, Welding and allied processes Flux and gas shielded electrical welding processes Procurement guidelines for consumables ISO 15792-1:2000, Welding consumables Test methods Part 1: Test
31、methods for all-weld metal test specimens in steel, nickel and nickel alloys ISO 15792-2:2000, Welding consumables Test methods Part 2: Preparation of single-run and two-run technique test specimens in steel 3 Classification Classification designations are based upon two approaches to indicate the t
32、ensile properties and the impact properties of the all-weld metal obtained with a given wire-flux combination. 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 c
33、ommercial product can be classified in both systems. Then either or both classification designations can be used for the product. The classification includes all-weld metal properties obtained with a manufacturers specific wire-flux combination as given below. A wire electrode may be separately clas
34、sified with the symbol for its chemical composition in Table 5A or 5B. 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 indicat
35、ing the strength and elongation of all-weld metal for multi-run technique or the strength of the parent material used in classification for the two-run technique (see Table 1A or 2A); 3) the third part gives a symbol indicating the impact properties of all-weld metal or welded joint (see Table 3); 4
36、) the fourth part gives a symbol indicating the type of flux used (see Table 4); 5) the fifth part gives a symbol indicating the chemical composition of the wire electrode used (see Table 5A). 3B Classification by tensile strength and 27 J impact energy The classification is divided into five parts:
37、 1) the first part gives a symbol indicating the product/process to be identified; 2) the second part gives a symbol indicating the strength and elongation of all-weld metal in either the as-welded or post weld heat- treated condition for a multi-run technique or the strength of the parent material
38、used in classification for the two-run technique (see Table 1B or 2B); 3) the third part gives a symbol indicating the impact properties of all-weld metal or welded joint in the same condition as specified for the tensile strength (see Table 3). The letter “U” after this designator indicates that th
39、e deposit meets an average optional requirement of 47 J at the designated Charpy test temperatures; 4) the fourth part gives a symbol indicating the type of flux used (see Table 4); 5) the fifth part gives a symbol indicating the chemical composition of the wire electrode used (see Table 5B). -,-,-
40、ISO 14171:2002(E) ISO 2002 All rights reserved 3 4 Symbols and requirements 4.1 Symbol for the product/process The symbol for a wire-flux combination used in the submerged arc welding process shall be the letter S at the beginning of the designation. The symbol for a wire electrode used in the subme
41、rged arc welding process shall be the letters S or SU at the beginning of the wire electrode designation. 4.2 Symbols for tensile properties 4.2.1 Multi-run technique 4.2.1A Classification by yield strength and 47 J impact energy For products suitable for multi-run welding, the symbol in Table 1A in
42、dicates yield strength, tensile strength and elongation of the all-weld metal in the as-welded condition determined in accordance with 5.1A. Table 1A Symbol for tensile properties by a multi-run technique (classification by yield strength and 47 J impact energy) Minimum yield strength a Tensile stre
43、ngth 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 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
44、 to five times the test specimen diameter. 4.2.1B Classification by tensile strength and 27 J impact energy For products suitable for multi-run welding, the symbol in Table 1B indicates yield strength, tensile strength and elongation of the all-weld metal in the as-welded condition or in the post we
45、ld heat treated condition determined in accordance with 5.1B. Table 1B Symbol for tensile properties by multi- run technique (classification by tensile strength and 27 J impact energy) Minimum yield strength b Tensile strength Minimum elongation c Symbol a N/mm2 N/mm2 % 43X 330 430 to 600 20 49X 390
46、 490 to 670 18 55X 460 550 to 740 17 57X 490 570 to 770 17 a X is “A” or “P”, where “A” indicates testing in the as-welded condition and “P” indicates testing in the post weld heat-treated condition. b For yield strength the lower yield (ReL) is used when yielding occurs, otherwise the 0,2 % proof s
47、trength (Rp0,2) is used. c Gauge length is equal to five times the test specimen diameter. ISO 14171:2002(E) 4 ISO 2002 All rights reserved 4.2.2 Two-run technique For products suitable for two-run welding only, the symbol in Table 2A or 2B indicates strength of the welded joint in relation to stren
48、gth of the parent material used in two-run welding tests satisfactorily completed in accordance with 5.2. Table 2A Symbol for tensile properties by two- run technique (classification by yield strength and 47 J impact energy) Minimum parent material yield strength Minimum tensile strength of the weld
49、ed joint Symbol N/mm2 N/mm2 2T 275 370 3T 355 470 4T 420 520 5T 500 600 Table 2B Symbol for tensile properties by two- run technique (classification by tensile strength and 27 J impact energy) Minimum tensile strength of the base metal and of the welded joint Symbol N/mm2 43S 430 49S 490 55S 550 57S 570 4.3 Symbols for impact properties of all-weld metal or two-run welded joint 4.3A Classification by yield streng