本规范涵盖了焊丝形式的耐腐蚀耐热钢。该焊丝通常用作钨极气体保护焊或金属气体保护焊的裸焊丝填充金属，用于类似成分的沉淀硬化、腐蚀和中等耐热钢的关键焊接件，其中要求焊接区域具有与母材金属相当的强度和耐腐蚀性，但其用途不限于此类应用。

This specification covers a corrosion and heat resistant steel in the form of welding wire.This wire has been used typically as bare wire filler metal for gas-tungsten-arc or gas-metal-arc welding of critical weldments of precipitation-hardenable, corrosion and moderate heat resistant steels of similar composition where the weld area is required to have comparable strength and corrosion resistance to that of the parent metal, but usage is not limited to such applications.