1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22234-5 SANS 2560:2008Edition 2ISO 2560:2002Edition 2SOUTH AFRICAN NATIONAL STANDARD Welding consumables Covered electrodes for manual met
4、al arc welding of non-alloy and fine grain steels Classification This national standard is the identical implementation of ISO 2560:2002 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private
5、 Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 2560:2008 Edition 2 ISO 2560:2002 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 44, Welding and allied processes, in a
6、ccordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in November 2008. This SANS document supersedes SABS ISO 2560:1993 (edition 1). Reference numberISO 2560:2002(E)ISO 2002INTERNATIONAL STANDARD ISO2560Second
7、 edition2002-11-01Welding consumables Covered electrodes for manual metal arc welding of non-alloy and fine grain steels Classification Produits consommables pour le soudage lectrodes enrobes pour le soudage manuel larc des aciers non allis et des aciers grains fins Classification SANS 2560:2008This
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13、nd ii ISO 2002 All rights reservedSANS 2560:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 2560:2002(E) ISO 2002 All rights reserved iiiContents Page Foreword iv Introduction. v 1 Scope 1 2 Normative references 1 3 Classification . 2
14、 4 Symbols and requirements 3 4.1 Symbol for the product/process 3 4.2 Symbol for strength and elongation of all-weld metal 3 4.3 Symbol for impact properties of all-weld metal . 4 4.4 Symbol for the chemical composition of all-weld metal . 4 4.5 Symbol for type of electrode covering 5 4.6 Symbol fo
15、r condition of post-weld heat-treatment of all-weld metal. 6 4.7 Symbol for nominal electrode efficiency and type of current 7 4.8 Symbol for welding position 7 4.9 Symbol for hydrogen content of deposited metal . 8 5 Mechanical tests 8 5.1 Preheating and interpass temperatures . 8 5.2 Pass sequence
16、 11 6 Chemical analysis . 12 7 Fillet weld test 14 8 Retest 17 9 Technical delivery conditions 17 10 Examples of designation 18 Annex A (informative) Classification systems. 19 Annex B (informative) Description of types of electrode covering Classification by yield strength and 47 J impact energy. 2
17、2 Annex C (informative) Description of types of electrode covering Classification by tensile strength and 27 J impact energy. 24 Annex D (informative) Notes on diffusible hydrogen 27 Bibliography 28 SANS 2560:2008This s tandard may only be used and printed by approved subscription and freemailing cl
18、ients of the SABS .ISO 2560:2002(E) iv ISO 2002 All rights reservedForeword 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
19、 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 collaborates closely with
20、 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 Standards. Draft Intern
21、ational 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 elements of this International
22、 Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 2560 was prepared in collaboration with the International Institute of Welding which has been approved by the ISO Council as an international standardizing body in the
23、field of welding. This second edition cancels and replaces the first edition (ISO 2560:1973), which has been technically revised. Annexes A to D of this International Standard are for information only. SANS 2560:2008This s tandard may only be used and printed by approved subscription and freemailing
24、 clients of the SABS .ISO 2560:2002(E) ISO 2002 All rights reserved vIntroduction This International Standard recognizes that there are two somewhat different approaches in the global market to classifying a given electrode, and allows for either or both to be used, to suit a particular market need.
25、 Application of either type of classification designation (or of both where suitable) identifies a product as classified according to this International Standard. The classification according to system A is mainly based on EN 499. The classification according to system B is mainly based upon standar
26、ds used around the Pacific Rim. This International Standard provides a classification in order to designate covered electrodes 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
27、parent 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. Therefore, where the application requires matching tensile strength, selection of the consumable s
28、hould be made by reference to column 3 of Table 1A or to Table 1B and Table 8B. 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 el
29、ectrode size, width of weave, welding position and parent metal 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
30、 www.iso.org. SANS 2560:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .SANS 2560:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .INTERNATIONAL STANDARD ISO 2560:2002(E) ISO 20
31、02 All rights reserved 1Welding consumables Covered electrodes for manual metal arc welding of non-alloy and fine grain steels Classification 1 Scope This International Standard specifies requirements for classification of covered electrodes and deposited metal in the as-welded condition and in the
32、post-weld heat-treated condition for manual metal arc welding of non-alloy and fine grain steels with a minimum yield strength of up to 500 N/mm2or a minimum tensile strength of up to 570 N/mm2. This International Standard is a combined specification providing for classification utilizing a system b
33、ased 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 applicable only to covered electrodes cl
34、assified to the system based upon the yield strength and the average impact energy of 47 J of all-weld metal in this International Standard. 2) Paragraphs and tables which carry the suffix letter “B” are applicable only to covered electrodes classified to the system based upon the tensile strength a
35、nd the average impact energy of 27 J of all-weld metal in this International Standard. 3) Paragraphs and tables which do not have either the suffix letter “A” or the suffix letter “B” are applicable to all covered electrodes classified in this International Standard. 2 Normative references The follo
36、wing 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 apply. However, parties to agreements based on this International
37、 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 of ISO and IEC maintain registers of currently valid Internationa
38、l 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 2401, Covered electrodes Determination of the efficiency, metal recovery and deposi
39、tion coefficient ISO 3690, Welding 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, Welds Working positions Definitions of angles of slope and rotation ISO 13916, Weldi
40、ng Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature ISO 14344, Welding and allied processes Flux and gas shielded electrical welding processes Procurement guidelines for consumables SANS 2560:2008This s tandard may only be used and prin
41、ted by approved subscription and freemailing clients of the SABS .ISO 2560:2002(E) 2 ISO 2002 All rights reservedISO 15792-1:2000, Welding consumables Test methods Part 1: Test methods for all-weld metal test specimens in steel, nickel and nickel alloys ISO 15792-3:2000, Welding consumables Test met
42、hods Part 3: Classification testing of positional capacity and root penetration of welding consumables 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
43、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 in both systems. Then either or both classification designations
44、 can be used for the product. The classification includes all-weld metal properties obtained with a covered electrode as given below. The classification is based on the electrode size 4 mm with the exception of the symbol for welding position which is based on ISO 15792-3. 3A Classification by yield
45、 strength and 47 J impact energy 3B Classification by tensile strength and 27 J impact energy The classification is divided into eight parts: The classification is divided into seven parts: 1) the first part gives a symbol indicating theproduct/process to be identified; 2) the second part gives a sy
46、mbol indicating thestrength and elongation of all-weld metal (seeTable 1A); 3) the third part gives a symbol indicating the impactproperties of all-weld metal (see Table 2A); 4) the fourth part gives a symbol indicating thechemical composition of all-weld metal (seeTable 3A); 5) the fifth part gives
47、 a symbol indicating the type ofelectrode covering (see 4.5A); 6) the sixth part gives a symbol indicating thenominal electrode efficiency and type of current(see Table 5A); 7) the seventh part gives a symbol indicating thewelding position (see Table 6A); 8) the eighth part gives a symbol indicating
48、 thehydrogen content of deposited metal (seeTable 7). 1) the first part gives a symbol indicating the product/process to be identified; 2) the second part gives a symbol indicating the strength of all-weld metal (see Table 1B); 3) the third part gives a symbol indicating the type of electrode coveri
49、ng, the type of current, and the welding position (see Table 4B); 4) the fourth part gives a symbol indicating the chemical composition of all-weld metal (see Table 3B); 5) the fifth part gives a symbol indicating the condition of postweld heat treatment under which the all-weld metal test was conducted (see 4.6B);6) the sixth part gives a symbol indicating that the electrode has satisfied a requirement for 47 J impact energy at the temperature normally used for the 27 J requirement; 7) the seventh p
