自2009年8月起，SAE航空航天材料部宣布本规范为“非现行”。因此，建议不要为新设计指定本规范。“NONCURRENT”是指那些以前可能被广泛使用的材料，这些材料可能是未来生产或加工现有设计所需的材料。然而，航空航天材料部不建议将来在新设计中使用这些规范。SAE可根据要求提供“NONCURRENT”规范。

This specification has been declared “NONCURRENT” by the Aerospace Materials Division, SAE, as of August 2009. It is recommended, therefore, that this specification not be specified for new designs. “NONCURRENT” refers to those materials which may have been widely used previously 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. “NONCURRENT” specifications are available from SAE upon request.