焊接耗材 高强度钢气体保护电弧焊用焊丝、焊丝、焊条和焊料 分类

[中文适用范围]： 本文件规定了高强度钢气体保护金属电弧焊和钨极惰性气体保护焊用实心焊接 wires、焊丝、焊条及焊道沉积物在焊接状态和热处理状态下的分类要求。本文件适用于最小屈服强度大于 500 MPa 或最小抗拉强度大于 570 MPa 的高强度钢。一条焊丝可以使用不同的保护气进行试验和分类。本文件是联合规范，提供基于屈服强度和 47 J 平均冲击能或基于抗拉强度和 27 J 平均冲击能的分类系统。 [外文原描述]： This document 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 steels 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 document 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 energy of 27 J of all-weld metal. a) Clauses, subclauses and tables which carry the suffix “System A” are applicable only to wire electrodes, wires, 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 document. b) Clauses, subclauses and tables which carry the suffix “System B” are applicable only to wire electrodes, wires, rods and 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 document. c) Clauses, subclauses and tables which do not have either the suffix “System A” or “System B” are applicable to all wire electrodes, wires, rods and deposits classified under this document. Annex A gives information on the description of composition designations for electrodes in the classification system based upon tensile strength and average impact energy of 27 J – System B.