自2005年4月起，SAE航空航天材料部已宣布本规范为“非现行”。因此，建议本规范不适用于新设计。“非现行”指以前广泛使用的规范，以及未来生产或加工现有设计可能需要的规范。然而，航空航天材料部门不建议在未来的新设计中使用这些规范。本规范涵盖了一种优质航空合金钢，其形式为焊丝。该焊丝通常用作要求接头具有高强度和断裂韧性的类似成分钢的气体保护焊或钨极气体保护焊的填充金属，但用途不限于此类应用。

This specification has been declared “NONCURRENT” by the Aerospace Materials Division, SAE, as of April, 2005. It is recommended, therefore, that this specification not be specified for new designs. “NONCURRENT” refers to those specifications which have previously been widely used and which may be required for production or processing of existing designs in the future. The Aerospace Materials Division, however, does not recommend these specifications for future use in new designs.This specification covers a premium aircraft-quality alloy steel in the form of welding wire.This wire has been used typically as filler metal for gas-metal-arc or gas-tungsten-arc welding of steels of similar composition requiring joints with high strength and fracture toughness, but usage is not limited to such applications.