焊接耗材 非合金钢和细晶粒钢的钨极惰性气体保护焊用焊条、焊丝和焊料 分类

[中文适用范围]： 本文件规定了对屈服强度不超过 500 MPa 或抗拉强度不超过 570 MPa 的非合金钢和细晶粒钢进行钨极惰性气体保护焊时，在焊接状态和焊后热处理状态下的棒、丝和沉积物进行分类的要求。本文件为一个综合规范，提供使用基于全焊缝金属的屈服强度和 47 J 平均冲击能量的系统或使用基于全焊缝金属的抗拉强度和 27 J 平均冲击能量的系统进行分类。a) 带有后缀“系统 A”的部件仅适用于根据本文件基于全焊缝金属的屈服强度和 47 J 平均冲击能量的系统分类的棒、丝和沉积物。 b) 带有后缀“系统 B”的部件仅适用于根据本文件基于抗拉强度和全焊缝金属 27J 平均冲击能量分类到该系统的棒、线材和沉积物。 c) 既没有后缀“系统 A”也没有后缀“系统 B”的部件适用于所有根据本文件分类的棒、线材和沉积物。 [外文原描述]： This document specifies requirements for classification of rods, wires and deposits in the as-welded condition and in the post-weld heat-treated condition for tungsten inert gas welding of non-alloy and fine-grain steels with a minimum yield strength of up to 500 MPa or a minimum tensile strength of up to 570 MPa. This document is a combined specification providing 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) Components which carry the suffix “system A” are applicable only to rods, wires and deposits classified to the system based upon the yield strength and the average impact energy of 47 J of all-weld metal in accordance with this document. b) Components which carry the suffix “system B” are applicable only to rods, wires and deposits classified to the system based upon the tensile strength and the average impact energy of 27 J of all-weld metal in accordance with this document. c) Components which have neither the suffix “system A” nor the suffix “system B” are applicable to all rods, wires and deposits classified in accordance with this document.