1、$XJXVW7UDQVODWLRQE,16SUDFKHQGLHQVW(QJOLVKSULFHJURXS1RSDUWRIWKLVWUDQVODWLRQPDEHUHSURGXFHGZLWKRXWSULRUSHUPLVVLRQRI,1HXWVFKHV,QVWLWXWIU1RUPXQJH9%HUOLQ%HXWK9HUODJ*PE+%HUOLQ*HUPDQKDVWKHHFOXVLYHULJKWRIVDOHIRU*HUPDQ6WDQGDUGV ,11RUPHQ , b) in Table 3B, the chemical composition has been changed for 4M31 and
2、N5M3; c) in Table 3B, footnote a related to the chemical analysis has been rendered more precise; d) in Clause 10, the examples of designation have been revised. Previous editions DIN EN 12534: 1999-11 DIN EN ISO 16834: 2007-05 DIN EN ISO 16834:2012-08 3 National Annex NA (informative) Bibliography
3、DIN EN ISO 544, Welding consumables Technical delivery conditions for welding filler metals Type of product, dimensions, tolerances and marking DIN EN ISO 13916, Welding Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature DIN EN ISO 14175,
4、 Welding consumables Gases and gas mixtures for fusion welding and allied processes DIN EN ISO 14344, Welding consumables Procurement of filler materials and fluxesDIN EN ISO 15792-1, Welding consumables Test methods Part 1: Test methods for all-weld metal test specimens in steel, nickel and nickel
5、alloys DIN EN ISO 16834:2012-08 4 This page is intentionally blank EUROPEAN STANDARD 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 st
6、rength steels - Classification (ISO 16834:2012) Produits consommables pour le soudage - Fils-lectrodes, fils, baguettes et dpts pour le soudage larc sous flux gazeux des aciers haute rsistance - Classification Schweizustze - Drahtelektroden, Drhte, Stbe und Schweigut zum Schutzgasschweien von hochfe
7、sten Sthlen - Einteilung (ISO 16834:2012) This European Standard 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.
8、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 language made by tra
9、nslation 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, Denmark, Estonia, Finl
10、and, 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. Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of
11、 exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 16834:2012: EEUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG (ISO 16834:2012) Contents Page Foreword . 3 Introduction 4 1 Scope . 5 2 Normative
12、 references 5 3 Classification 6 4 Symbols and requirements . 7 4.1 Symbol for the product/process . 7 4.2 Symbol for strength and elongation properties of all-weld metal 7 4.3 Symbol for impact properties of all-weld metal 8 4.4 Symbol for shielding gas 8 4.5 Symbol for the chemical composition of
13、wire electrodes, wires and rods 9 4.6 Symbol for condition of post-weld heat treatment . 9 5 Mechanical tests. 13 5.1 Preheating and interpass temperatures 13 5.2 Welding conditions and pass sequence 14 5.3 Post-weld heat-treated condition . 14 6 Chemical analysis 15 7 Rounding procedure 15 8 Retest
14、 15 9 Technical delivery conditions . 15 10 Examples of designation . 16 Bibliography 18 2DIN EN ISO 16834:2012-08 EN ISO 16834:2012 (E) Foreword This document (EN ISO 16834:2012) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Commit
15、tee 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 conflicting national standards shall be withdrawn at the latest
16、 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 document supersedes EN ISO 16834:2007. According to the CEN/CE
17、NELEC 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithua
18、nia, 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 16834:2012 without any modification. 3DIN EN ISO 16834:2012-08 EN
19、ISO 16834:2012 (E) Introduction 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 either t
20、ype 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 upon stand
21、ards 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 required,
22、 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 necessaril
23、y 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. 4DIN EN ISO 16834:2012-08 EN ISO 16834:2012 (E) 1
24、Scope This International Standard specifies requirements for classification of wire electrodes, wires, 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 ste
25、els with a minimum yield strength greater than 500 MPa, or a minimum tensile strength greater than 570 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 up
26、on 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. e) Clauses, subclauses and tables which carry the suffix letter “A” are applicable only to wire electrodes, wi
27、res, rods and deposits classified according to the system based upon the yield strength and the average 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 a
28、nd deposits classified according to the system based upon the tensile strength and the average impact 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 wi
29、re electrodes, wires, rods and deposits classified under 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 latest edition of
30、the referenced document (including any amendments) applies. ISO 544, Welding consumables Technical delivery 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
31、and preheat maintenance temperature ISO 14175:2008, Welding consumables Gases and gas mixtures for fusion 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
32、test specimens in steel, nickel and nickel alloys ISO 80000-1:2009, Quantities and units Part 1: General 5DIN EN ISO 16834:2012-08 EN ISO 16834:2012 (E) 3 Classification Classification designations are based upon two approaches to indicate the tensile properties and the impact properties of the all-
33、weld metal obtained with a given wire electrode, wire or rod. The two designation 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 cl
34、assification requirements in both systems. Then either or both classification designations 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
35、 accordance with the mechanical properties of its all-weld metal, using a shielding 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 d
36、ivided into five parts: 1) the first part gives a symbol indicating theproduct/process 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 s
37、econd part gives a symbol indicating the strength and elongation of the all-weld 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 indicat
38、ing the impact properties of all-weld metal in the same condition as specified for 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
39、symbol indicating theshielding gas used (see 4.4); 4) the fourth part gives a symbol 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
40、 chemical composition of the wire electrode, wire or rod used (see Table 3B). 6) the sixth part gives a symbol indicating thepost-weld heat treatment in case this is applied(see 4.6A). 6DIN EN ISO 16834:2012-08 EN ISO 16834:2012 (E) 4 Symbols and requirements 4.1 Symbol for the product/process The s
41、ymbol for the wire electrode, wire or rod used in the arc welding 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 yiel
42、d 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 Table 1B indicates yi
43、eld strength,tensile strength and elongation of the all-weld metal in the as-welded condition or in the post-weld heat-treated condition determined in accordance with Clause 5. Table 1A Symbol for tensile properties of all-weld metal (Classification by yield strength and 47 J impact energy) Table 1B
44、 Symbol for tensile properties of all-weld metal (Classification by tensile strength and 27 J impact energy) Symbol Minimum yield strengthaTensile strength Minimum elongationbSymbolaMinimum yield strengthbTensile strength Minimum elongationcMPa MPa % MPa MPa % 55 62 69 79 89 550 620 690 790 890 640
45、to 820 700 to 890 770 to 940 880 to 1 080 940 to 1 180 18 18 17 16 15 59X 62X 69X 76X 78X 83X 490 530 600 680 680 745 590 to 790 620 to 820 690 to 890 760 to 960 780 to 980 830 to 1 030 16 15 14 13 13 12 aFor yield strength, the lower yield strength, ReL, is used when yielding occurs, otherwise the
46、0,2% proof strength, Rp0,2, is used. bGauge length is equal to five times the test specimen diameter. aX is “A”, “P” or “AP”; see 4.6B. bFor yield strength, the lower yield, ReL, is used when yielding occurs; otherwise, the 0,2 % proof strength, Rp0,2, is used. cGauge length is equal to five times t
47、he test specimen diameter. NOTE Post-weld heat treatment can alter the strength of the weld metal from that obtained in the as-welded condition. 7DIN EN ISO 16834:2012-08 EN ISO 16834:2012 (E) 4.3 Symbol for impact properties of all-weld metal 4.3A Classification by yield strength and47 J impact ene
48、rgy 4.3B Classification by tensile strength and 27 J impact energy The symbol in Table 2 indicates the temperature atwhich an impact energy of 47 J is achieved underthe conditions given in Clause 5A. Three testspecimens shall be tested. Only one individual valuemay be lower than 47 J but not lower than 32 J. The symbol in Table 2 indicates the temperature at which an impact energy of 27 J is achieved in the as-welded condition or in the post-weld heat-
