1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 16834:2012W e l d i n g c o n s u m a b l e s W i r e electrodes, wires, rods and deposits for gas shielded arc welding of high strength steels Classification (ISO 1683
2、4:2012)BS EN ISO 16834:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO16834:2012. It supersedes BS EN ISO 16834:2007 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/39, Welding consumables.A list of org
3、anizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012
4、ISBN 978 0 580 72584 5ICS 25.160.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDA
5、RD NORME EUROPENNE EUROPISCHE NORM EN ISO 16834 May 2012 ICS 25.160.20 Supersedes EN ISO 16834:2007English Version Welding consumables - Wire electrodes, wires, rods and deposits for gas shielded arc welding of high strength steels - Classification (ISO 16834:2012) Produits consommables pour le soud
6、age - Fils-lectrodes, fils, baguettes et dpts pour le soudage larc sous flux gazeux des aciers haute rsistance - Classification (ISO 16834:2012) Schweizustze - Drahtelektroden, Drhte, Stbe und Schweigut zum Schutzgasschweien von hochfesten Sthlen - Einteilung (ISO 16834:2012) This European Standard
7、was approved by CEN on 13 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 without any alteration. Up-to-date lists and bibliographical references concerning such n
8、ational 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 language made by translation under the responsibility of a CEN member into its own la
9、nguage 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, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
10、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-
11、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 16834:2012: EBS EN ISO 16834:2012EN ISO 16834:2012 (E) 3 Foreword This document (EN ISO 16834:2012) has been prepared by Technical Committee ISO/TC 44 “Welding
12、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 by publication of an identical text or by endorsement, at the latest by November 2012, and con
13、flicting national standards shall be withdrawn at the latest by November 2012. Attention is 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 do
14、cument supersedes EN ISO 16834:2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germa
15、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 16834:2012 has been approved by CEN as a EN ISO 16834:
16、2012 without any modification. BS EN ISO 16834:2012ISO 16834:2012(E) ISO 2012 All rights reserved iiiContents Page Foreword ivIntroduction . v1 Scope 12 Normative references 13 Classification . 24 Symbols and requirements 34.1 Symbol for the product/process 34.2 Symbol for strength and elongation pr
17、operties of all-weld metal 34.3 Symbol for impact properties of all-weld metal . 44.4 Symbol for shielding gas 44.5 Symbol for the chemical composition of wire electrodes, wires and rods . 54.6 Symbol for condition of post-weld heat treatment 55 Mechanical tests 95.1 Preheating and interpass tempera
18、tures 95.2 Welding conditions and pass sequence . 105.3 Post-weld heat-treated condition . 106 Chemical analysis . 117 Rounding procedure . 118 Retest 119 Technical delivery conditions 1110 Examples of designation 12Bibliography 14BS EN ISO 16834:2012ISO 16834:2012(E) iv ISO 2012 All rights reserved
19、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 out through ISO technical committees. Each member body interested in a subject for which a t
20、echnical 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 the International Electrotechnical Commission (IEC) on all matters
21、 of electrotechnical 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 circulate
22、d 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 document may be the subject of patent rights. ISO shall not be held responsible
23、for identifying any or all such patent rights. ISO 16834 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 3, Welding consumables. This second edition cancels and replaces the first edition (ISO 16834:2006), which has been technically revised. The main chan
24、ges compared to the previous edition are: a) in 4.4, the separation between the A and B side has been eliminated; b) in Table 3B, the chemical composition has been changed for 4M31 and N5M3; c) footnote a to Table 3B has been redrafted to give more precision; d) the designation examples in Clause 10
25、 have been modified. Requests for official interpretations 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 16834:2012ISO 16834:2012(E) ISO
26、2012 All rights reserved vIntroduction This International Standard recognizes that there are two somewhat different approaches in the global market to classifying a given wire electrode, wire, rod or deposit, and allows for either or both to be used to suit a particular market need. Application of e
27、ither type of classification designation (or of both where suitable) identifies a product as classified in accordance with this International Standard. The classification in accordance with system A is mainly based on EN 12534:19991. The classification in accordance with system B is mainly based upo
28、n standards used around the Pacific Rim. Future revisions will aim to merge the two systems into a single classification system. This International Standard provides a classification for the designation of wire electrodes, wires, rods and deposits in terms of their chemical composition and, where re
29、quired, 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 the parent metal. Users should note that matching weld metal yield strength to parent metal yield strength does not nec
30、essarily ensure that the weld metal tensile strength matches that of the parent material. Thus, where the application requires matching tensile strength, selection of the consumable should be made by reference to column 3 of Table 1A or 1B, as appropriate. BS EN ISO 16834:2012BS EN ISO 16834:2012INT
31、ERNATIONAL STANDARD ISO 16834:2012(E) ISO 2012 All rights reserved 1Welding consumables Wire electrodes, wires, rods and deposits for gas shielded arc welding of high strength steels Classification 1 Scope This International Standard specifies requirements for classification of wire electrodes, wire
32、s, rods and all-weld metal deposits in the as-welded condition and in the post-weld heat-treated (PWHT) condition for gas shielded metal arc welding and tungsten inert-gas welding of high-strength steels with a minimum yield strength greater than 500 MPa, or a minimum tensile strength greater than 5
33、70 MPa. One wire electrode can be tested and classified with different shielding gases. 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
34、 based upon the tensile strength and the average impact energy of 27 J of all-weld metal. e) Clauses, subclauses and tables which carry the suffix letter “A” are applicable only to wire electrodes, wires, rods and deposits classified according to the system based upon the yield strength and the aver
35、age impact energy of 47 J of all-weld metal under this International Standard. f) Clauses, subclauses and tables which carry the suffix letter “B” are applicable only to wire electrodes, wires, rods and deposits classified according to the system based upon the tensile strength and the average impac
36、t energy of 27 J of all-weld metal under this International Standard. g) Clauses, subclauses and tables which do not have either the suffix letter “A” or the suffix letter “B” are applicable to all wire electrodes, wires, rods and deposits classified under this International Standard. 2 Normative re
37、ferences 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 Technical d
38、elivery conditions for filler materials and fluxes Type of product, dimensions, tolerances and markings ISO 13916, Welding Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature ISO 14175:2008, Welding consumables Gases and gas mixtures for f
39、usion welding and allied processes ISO 14344, Welding consumables Procurement of filler materials and fluxes ISO 15792-1:2000, Welding consumables Test methods Part 1: Test methods for all-weld metal test specimens in steel, nickel and nickel alloys ISO 80000-1:2009, Quantities and units Part 1: Gen
40、eral BS EN ISO 16834:2012ISO 16834:2012(E) 2 ISO 2012 All rights reserved3 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 wire electrode, wire or rod. The two designatio
41、n approaches include additional designators for some other classification requirements, but not all, as is clear from the following clauses. In most cases, a given commercial product can be classified according to the classification requirements in both systems. Then either or both classification de
42、signations can be used for the product. A wire electrode, wire or rod shall be classified in accordance with its chemical composition in Table 3A or Table 3B. A weld deposit shall be classified with additional symbols in accordance with the mechanical properties of its all-weld metal, using a shield
43、ing gas from a specific group. 3A Classification by yield strength and 47 J impact energy 3B Classification by tensile strength and 27 J impact energy The classification is divided into six parts: The classification is divided into five parts: 1) the first part gives a symbol indicating theproduct/p
44、rocess to be identified; 1) the first part gives a symbol indicating the product/process to be identified; 2) the second part gives a symbol indicating thestrength and elongation of all-weld metal (seeTable 1A); 2) the second part gives a symbol indicating the strength and elongation of the all-weld
45、 metal in either the as-welded or post-weld heat-treated condition (see Table 1B); 3) the third part gives a symbol indicating theimpact properties of all-weld metal (seeTable 2); 3) the third part gives a symbol indicating the impact properties of all-weld metal in the same condition as specified f
46、or the tensile strength (see Table 2). The letter “U” after this designa-tor 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 theshielding gas used (see 4.4); 4) the fourth part gives a sy
47、mbol indicating the shielding gas used (see 4.4); 5) the fifth part gives a symbol indicating thechemical composition of the wire electrode, wireor rod used (see Table 3A); 5) the fifth part gives a symbol indicating the chemical composition of the wire electrode, wire or rod used (see Table 3B). 6)
48、 the sixth part gives a symbol indicating thepost-weld heat treatment in case this is applied(see 4.6A). BS EN ISO 16834:2012ISO 16834:2012(E) ISO 2012 All rights reserved 34 Symbols and requirements 4.1 Symbol for the product/process The symbol for the wire electrode, wire or rod used in the arc we
49、lding process shall be the letter G (gas shielded metal arc welding) and/or W (gas shielded arc welding with non-consumable tungsten electrode). 4.2 Symbol for strength and elongation properties of all-weld metal 4.2A Classification by yield strength and 47 J impact energy 4.2B Classification by tensile strength and 27 J impact energy The symbol in Table 1A indicates yield strength,tensile strength and elongation of the all-weld metal in the as-welded condition determined inaccordance with Clause 5. The symbol in Tabl
