1、BS EN ISO2560:2009ICS 25.160.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDWelding consumables Covered electrodesfor manual metal arcwelding of non-alloyand fine grain steels Classification (ISO2560:2009)This British Standard was published under the authorit
2、y of the Standards Policy and Strategy Committee on 31 October 2009 BSI 2009ISBN 978 0 580 58280 6Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 2560:2009National forewordThis British Standard is the UK implementation of EN ISO 2560:2009. Itsupersedes BS EN ISO 2560:2005 which
3、is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/39, Welding consumables.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract
4、. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 2560 October 2009 ICS 25.160.20 Supersedes EN ISO 2560:2005English Version Welding consumables - Covered elect
5、rodes for manual metal arc welding of non-alloy and fine grain steels - Classification (ISO 2560:2009) Produits consommables pour le soudage - lectrodes enrobes pour le soudage manuel larc des aciers non allis et des aciers grains fins - Classification (ISO 2560:2009) Schweizustze - Umhllte Stabelek
6、troden zum Lichtbogenhandschweien von unlegierten Sthlen und Feinkornsthlen - Einteilung (ISO 2560:2009) This European Standard was approved by CEN on 17 September 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
7、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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, F
8、rench, 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cypr
9、us, 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 STANDARDIZATION CO
10、MIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 2560:2009: EBS EN ISO 2560:2009EN ISO 2560:2009 (E) 3 Forewor
11、d This document (EN ISO 2560:2009) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Committee CEN/TC 121 “Welding” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either
12、 by publication of an identical text or by endorsement, at the latest by April 2010, and conflicting national standards shall be withdrawn at the latest by April 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CEN
13、ELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 2560:2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belg
14、ium, Bulgaria, 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 the United Kingdom. Endorsement notice
15、 The text of ISO 2560:2009 has been approved by CEN as a EN ISO 2560:2009 without any modification. BS EN ISO 2560:2009ISO 2560:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Classification .2 4 Symbols and requirements 3 4.1 Symbo
16、l for the product/process 3 4.2 Symbols 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 .5 4.5 Symbol for type of electrode covering6 4.6 Symbol for condition of post-weld heat-treatment o
17、f all-weld metal.7 4.7 Symbol for nominal electrode efficiency and type of current 7 4.8 Symbol for welding position 8 4.9 Symbol for diffusible hydrogen content of deposited metal 8 5 Mechanical tests9 5.1 Preheating and interpass temperatures9 5.2 Pass sequence.13 6 Chemical analysis .13 7 Fillet
18、weld test16 8 Rounding procedure .18 9 Retests18 10 Technical delivery conditions 18 11 Examples of designation 19 Annex A (informative) Classification systems.20 Annex B (informative) Description of types of electrode covering Classification by yield strength and 47 J impact energy .23 Annex C (inf
19、ormative) Description of types of electrode covering Classification by tensile strength and 27 J impact energy .25 Annex D (informative) Notes on diffusible hydrogen and the avoidance of cold cracking 28 Bibliography29 BS EN ISO 2560:2009ISO 2560:2009(E) iv ISO 2009 All rights reservedForeword ISO (
20、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 commi
21、ttee 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 electrotec
22、hnical 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 by the technical committees are circulated to the membe
23、r 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 rights. ISO shall not be held responsible for identifyin
24、g any or all such patent rights. ISO 2560 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 3, Welding consumables. This third edition cancels and replaces the second edition (ISO 2560:2002), which has been technically revised. Requests for official interpr
25、etations of any aspect of this International Standard should be directed to the Secretariat of ISO/TC 44/SC 3 via your national standards body. A complete listing of these bodies can be found at www.iso.org. BS EN ISO 2560:2009ISO 2560:2009(E) ISO 2009 All rights reserved vIntroduction This Internat
26、ional 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. Application of either type of classification designation (or of both, where suitable) identifi
27、es a product as classified in accordance with this International Standard. The classification in accordance with system A is mainly based on EN 499:19941. The classification in accordance with system B is mainly based upon standards used around the Pacific Rim. This International Standard provides a
28、 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 strength to tensile strength of weld metal is generally higher than that of parent metal. Users should note that matching weld metal yiel
29、d strength to parent metal yield strength does 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 should be made by reference to column 3 of Table 1A or to Tabl
30、e 1B and Table 8B. It should be noted that the mechanical properties of all-weld metal test specimens used to classify the electrodes vary from those obtained in production joints because of differences in welding procedure such as electrode size, width of weave, welding position, welding current, i
31、nterpass temperature and parent metal composition. BS EN ISO 2560:2009BS EN ISO 2560:2009INTERNATIONAL STANDARD ISO 2560:2009(E) ISO 2009 All rights reserved 1Welding consumables Covered electrodes for manual metal arc welding of non-alloy and fine grain steels Classification 1 Scope This Internatio
32、nal Standard specifies requirements for classification of covered electrodes and deposited metal in the as-welded condition and in the 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 MPa or a minimum tensile
33、strength of up to 570 MPa. This International Standard is a combined specification providing for classification 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 energ
34、y of 27 J of all-weld metal. a) Paragraphs and tables which carry the suffix letter “A” are applicable only to covered electrodes classified to the system based upon the yield strength and the average impact energy of 47 J of all-weld metal in this International Standard. b) Paragraphs and tables wh
35、ich carry the suffix letter “B” are applicable only to covered electrodes classified to the system based upon the tensile strength and the average impact energy of 27 J of all-weld metal in this International Standard. c) Paragraphs and tables which do not have either the suffix letter “A” or the su
36、ffix letter “B” are applicable to all covered electrodes classified in 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 undated references, the late
37、st edition of the referenced document (including any amendments) applies. ISO 544, Welding consumables Technical delivery conditions for welding filler materials Type of product, dimensions, tolerances and markings ISO 2401, Covered electrodes Determination of the efficiency, metal recovery and depo
38、sition 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 Welding positions ISO 13916, Welding Guidance on the measurement of preheati
39、ng temperature, interpass temperature and preheat maintenance temperature ISO 14344, Welding and allied processes Procurement of welding 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 BS EN ISO
40、2560:2009ISO 2560:2009(E) 2 ISO 2009 All rights reservedISO 15792-3:2000, Welding consumables Test methods Part 3: Classification testing of positional capacity and root penetration of welding consumables in a fillet weld (as amended by ISO 15792-3:2000/Cor.1:2006) ISO 80000-1, Quantities and units
41、Part 1: General 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 classification r
42、equirements, but not all, as is clear from the following subclauses. In most cases, a given commercial 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 covered
43、 electrode as given below. The classification is based on an electrode size of 4,0 mm, with the exception of the symbol for welding position, which is based on ISO 15792-3. Where the defined diameter has not been manufactured, the closest diameter to 4,0 mm shall be used for all-weld metal tests. 3A
44、 Classification by yield 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) th
45、e second part gives a symbol indicating thestrength and elongation of all-weld metal (seeTable 1A); 3) the third part gives a symbol indicating theimpact properties of all-weld metal (see Table 2A); 4) the fourth part gives a symbol indicating thechemical composition of all-weld metal (see Table 3A)
46、; 5) the fifth part gives a symbol indicating the typeof electrode covering (see 4.5A); 6) the sixth part gives a symbol indicating thenominal electrode efficiency and type of current (seeTable 5A); 7) the seventh part gives a symbol indicating thewelding position (see Table 6A); 8) the eighth part
47、gives a symbol indicating thediffusible hydrogen content of the deposited metal(see Table 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
48、 indicating the type of electrode covering, 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 post-weld heat treatment unde
49、r 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 part gives a symbol indicating the diffusible hydrogen content of the deposited metal (see Table 7). BS EN ISO 2560:2009ISO 2560:2009(E) ISO 2009 All rights reserved 3In order to promote the use of this InternationalStandard, the classification is split into two secti
