自1998年2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。“非流动”指的是以前广泛使用的材料，以及将来可能需要用于某些现有设计的材料。然而，航空航天材料部门不建议将其作为未来用于新设计的标准材料。本规范涵盖了优质锻件（通常是系列化锻件）的批准程序、生产此类锻件的库存，以及生产锻件和锻件库存的控制措施。 本程序通常用于由锻件生产的高应力零件，这些零件需要获得锻件及其制造原料和生产面的批准，以确保生产批次的锻件具有相同的冶金质量，并采用与最初合格的锻件和原料相同的基本程序进行生产，但使用并不局限于此类应用。本规范适用于由钢和可热处理的耐腐蚀和耐热钢制成的零件，这些零件在从铸锭到成品的整个制造过程中都要遵守严格的检验标准。

This specification has been declared “NONCURRENT” by the Aerospace Materials Division, SAE, as of February 1998. It is recommended, therefore, that this specification not be specified for new designs. “NONCURRENT” refers to those materials which have previously been widely used and which may be required on some existing designs in the future. The Aerospace Materials Division, however, does not recommend these as standard materials for future use in new designs.This specification covers procedures for approval of premium-quality forgings, usually serialized, the stock from which such forgings are produced, and the controls to be exercised in producing the forgings and forging stock. This procedure has been used typically for highly-stressed parts produced from forgings which require approval of the forgings and the stock from which they are made and facets of their production to ensure that production lots of forgings are of the same metallurgical quality and are produced by the same basic procedures as the forgings and stock originally qualified, but usage is not limited to such applications. This specification is applicable to parts made of steels and heat-treatable corrosion and heat resistant steels and which are subjected to rigid inspection standards throughout manufacture from ingot to finished part.