焊接耗材.高强度钢手工金属电弧焊用覆盖焊条.分类

[中文适用范围]： ，该文件有助于提升焊接接头的一致性，确保在特定结构件制造过程中能够满足相应的强度与可靠性需求。其分类体系综合考虑了实际应用中的技术条件，为相关行业的标准化生产与质量控制奠定了基础，促进了焊接技术在高端装备制造领域的规范化应用。 [外文原描述]： This document specifies requirements for classification of covered electrodes and deposited metal in the as-welded condition and in 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 document is a combined specification providing a classification utilizing a system based on the yield strength and an average impact energy of 47 J of the all-weld metal, or utilizing a system based on the tensile strength and an average impact energy of 27 J of the all-weld metal. Clauses, subclauses and tables which carry the suffix “System A” are applicable only to covered electrodes classified under the system based on the yield strength and an average impact energy of 47 J of the all-weld metal given in this document. Clauses, subclauses and tables which carry the suffix “System B” are applicable only to covered electrodes classified under the system based on the tensile strength and an average impact energy of 27 J of the all-weld metal given in this document. Subclauses and tables which do not have either the suffix “System A” or the suffix “System B” are applicable to all covered electrodes classified under this document.