1、July 2012 Translation by DIN-Sprachendienst.English price group 16No 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
2、5.160.20!$9J“1902239www.din.deDDIN EN ISO 18275Welding consumables Covered electrodes for manual metal arc welding of high-strengthsteels Classification (ISO 18275:2011)English translation of DIN EN ISO 18275:2012-07Schweizustze Umhllte Stabelektroden zum Lichtbogenhandschweien von hochfesten Sthlen
3、 Einteilung (ISO 18275:2011)Englische bersetzung von DIN EN ISO 18275:2012-07Produits consommables pour le soudage lectrodes enrobes pour le soudage manuel larc des aciers haute rsistance Classification (ISO 18275:2011)Traduction anglaise de DIN EN ISO 18275:2012-07SupersedesDIN EN 757:1997-05www.be
4、uth.deDocument comprises 37 pagesIn case of doubt, the German-language original shall be considered authoritative.06.12 DIN EN ISO 18275:2012-07 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”
5、(Secretariat: AFNOR, France) in collaboration with Technical Committee CEN/TC 121 “Welding” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Schweien und verwandte Verfahren (Welding and Allied Processes Standards Committee), Working Commit
6、tee NA 092-00-03 AA Schweizustze (DVS AG W 5). This International Standard is a “cohabitation standard” in 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 ac
7、cording to system B is mainly based on standards used around the Pacific Rim. It should be noted that, when 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. The DIN Standards corresponding
8、to the International Standards referred to in this document are as follows: ISO 544 DIN EN ISO 544 ISO 2401 DIN EN 22401 ISO 2560 DIN EN ISO 2560 ISO 3690 DIN EN ISO 3690 ISO 6847 DIN EN ISO 6847 ISO 6947 DIN EN ISO 6947 ISO 14344 DIN EN ISO 14344 ISO 15792-1 DIN EN ISO 15792-1 ISO 15792-3 DIN EN IS
9、O 15792-3 Amendments This standard differs from DIN EN 757:1997-05 as follows: a) the content of International Standard ISO 18275:2011 has been adopted in full; b) the standard has been prepared as a “cohabitation standard” with system A and system B classification; c) Clause 7 “Fillet weld test” ha
10、s been included; d) Clause 8 “Rounding procedure” has been included; e) Clause 9 “Retests” has been included. Previous editions DIN 8529-1: 1981-04 DIN EN 757: 1997-05 DIN EN ISO 18275:2012-07 3 National Annex NA (informative) Bibliography DIN EN 22401, Covered electrodes Determination of the effici
11、ency, metal recovery and deposition coefficient DIN EN ISO 544, Welding consumables Technical delivery conditions for welding filler materials and fluxes Type of product, dimensions, tolerances and markings DIN EN ISO 2560, Welding consumables Covered electrodes for manual metal arc welding of non-a
12、lloy and fine grain steels Classification DIN EN ISO 3690, Welding and allied processes Determination of hydrogen content in arc weld metal DIN EN ISO 6847, Welding consumables Deposition of a weld metal pad for chemical analysis DIN EN ISO 6947, Welding and allied processes Welding positions DIN EN
13、 ISO 14344, Welding consumables Procurement of filler materials and fluxes DIN EN ISO 15792-1, Welding consumables Test methods Part 1: Test methods for all-weld metal test specimens in steel, nickel and nickel alloys DIN EN ISO 15792-3, Welding consumables Test methods Part 3: Classification testin
14、g of positional capacity and root penetration of welding consumables in a fillet weld DIN EN ISO 18275:2012-07 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 18275 May 2012 ICS 25.160.20 Supersedes EN 757:1997English Version Welding consumables - Covered
15、electrodes for manual metal arc welding of high-strength steels - Classification (ISO 18275:2011) Produits consommables pour le soudage - lectrodes enrobes pour le soudage manuel larc des aciers haute rsistance - Classification (ISO 18275:2011) Schweizustze - Umhllte Stabelektroden zum Lichtbogenhan
16、dschweien von hochfesten Sthlen - Einteilung (ISO 18275:2011) This European Standard was approved by CEN on 21 April 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard with
17、out any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other
18、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 same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, De
19、nmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE
20、 NORMALISATION EUROPISCHES KOMITEE FR NORMUNG 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 18275:2012: EContents Page Foreword 3Introduction.4 1 Scope5 2 Normative re
21、ferences5 3 Classification .6 4 Symbols and requirements 7 4.1 Symbol for the product/process 7 4.2 Symbol for tensile properties of all-weld metal .7 4.3 Symbol for impact properties of all-weld metal .8 4.4 Symbol for chemical composition of all-weld metal9 4.5 Symbol for type of electrode coverin
22、g11 4.6 Symbol for condition of post-weld heat treatment of all-weld metal .11 4.7 Symbol for nominal electrode efficiency and type of current 12 4.8 Symbol for welding position 13 4.9 Symbol for diffusible hydrogen content of deposited metal 13 4.10 Mechanical property and composition requirements1
23、3 5 Mechanical property tests 19 5.1 General .19 5.2 Preheating and interpass temperatures19 5.3 Pass sequence.19 6 Chemical analysis .19 7 Fillet weld test20 8 Rounding procedure .21 9 Retests21 10 Technical delivery conditions 22 11 Examples of designation 22 Annex A (informative) Classification s
24、ystems.24 Annex B (informative) Description of types of electrode covering Classification by yield strength and 47 J impact energy.27 Annex C (informative) Description of types of electrode covering Classification by tensile strengthand 27 J impact energy.28 Annex D (informative) Notes on diffusible
25、 hydrogen30 Annex E (informative) Description of chemical composition symbols Classification by yield strength and 47 J impact energy.31 Annex F (informative) Description of chemical composition symbols Classification by tensile strength and 27 J impact energy .32 Bibliography33 EN ISO 18275:2012 (E
26、) DIN EN ISO 18275:2012-07 2Foreword The text of ISO 18275:2011 has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 18275:2012 by Technical Committee CEN/TC 121 “Welding” the s
27、ecretariat 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 November 2012. Attention i
28、s 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 757:1997. According to the CEN/CENELEC Internal Regulations, the nati
29、onal 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, Luxembourg, Malta, Netherlands,
30、 Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 18275:2011 has been approved by CEN as a EN ISO 18275:2012 without any modification. EN ISO 18275:2012 (E) DIN EN ISO 18275:2012-07 3 Introduction Thi
31、s 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. Application of either type of classification designation (or of both, where suitable
32、) identifies a product as classified in accordance with this International Standard. The classification in accordance with system A is mainly based on EN 757:19971. The classification in accordance with system B is mainly based upon standards used around the Pacific Rim. This International Standard
33、provides a classification system for covered electrodes for high-strength steels in terms of the tensile properties, impact properties and chemical composition of the all-weld metal, as well as the type of electrode covering. The ratio of yield strength to tensile strength of weld metal is generally
34、 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 tensile strength matches that of the parent metal. Therefore, where the application requires matching tensile strength, selectio
35、n of the consumable should be made by reference to column 3 of Table 1A or column 2 of Table 8B. It should be noted that the mechanical properties of all-weld metal test specimens used to classify covered electrodes can vary from those obtained in production joints because of differences in welding
36、procedure such as electrode size, width of weave, welding position, and parent metal composition. EN ISO 18275:2012 (E) DIN EN ISO 18275:2012-07 41 Scope This International Standard specifies requirements for classification of covered electrodes and deposited metal in the as-welded condition and in
37、the post-weld heat-treated condition for manual metal arc welding of high-strength steels with a minimum yield strength greater than 500 MPa or a minimum tensile strength greater than 570 MPa. This International Standard is a combined specification providing a classification utilizing a system based
38、 upon the yield strength and an average impact energy of 47 J of the all-weld metal, or utilizing a system based upon the tensile strength and an average impact energy of 27 J of the all-weld metal. a) Subclauses and tables which carry the suffix letter “A” are applicable only to covered electrodes
39、classified under the system based upon the yield strength and an average impact energy of 47 J of the all-weld metal given in this International Standard. b) Subclauses and tables which carry the suffix letter “B” are applicable only to covered electrodes classified under the system based upon the t
40、ensile strength and an average impact energy of 27 J of the all-weld metal given in this International Standard. c) Subclauses and tables which do not have either the suffix letter “A” or the suffix letter “B” are applicable to all covered electrodes classified under this International Standard. 2 N
41、ormative 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 latest edition of the referenced document (including any amendments) applies. ISO 544, Welding consumables
42、Technical delivery conditions for filler materials and fluxes Type of product, dimensions, tolerances and markings ISO 2401, Covered electrodes Determination of the efficiency, metal recovery and deposition coefficient ISO 2560:2009, Welding consumables Covered electrodes for manual metal arc weldin
43、g of non-alloy and fine grain steels Classification ISO 3690, Welding and allied processes Determination of hydrogen content in arc weld metal1)ISO 6847, Welding consumables Deposition of a weld metal pad for chemical analysis ISO 6947:2011, Welding and allied processes Welding positions ISO 14344,
44、Welding consumables Procurement of filler materials and fluxes 1) To be published. (Revision of ISO 3690:2000) EN ISO 18275:2012 (E) DIN EN ISO 18275:2012-07 5 ISO 15792-1:2000+Amd.1:, Welding consumables Test methods Part 1: Test methods for all-weld metal test specimens in steel, nickel and nickel
45、 alloys ISO 15792-3, Welding consumables Test methods Part 3: Classification testing of positional capacity and root penetration of welding consumables in a fillet weld2)ISO 80000-1:2009, Quantities and units Part 1: General 3 Classification Classification designations are based upon two approaches
46、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 requirements, but not all, as will be clear from the following subclauses. In most cases, a
47、given commercial product can be classified in both systems. Then either or both classification designations can be used for the product. The classification is based on an electrode diameter of 4,0 mm, with the exception of the symbol for welding position, which is based on ISO 15792-3. 3.1A Classification by yield strength and47 J impact energy 3.1B Classification by tensile strength and 27 J impact energy The classification is divided into nine parts: 1) the first part gives a symbol indicating theproduct/process to be identified; 2) the second part gives a symbol indicating thestrengt
