本规范规定了批量加工使用过的金属粉末的工艺要求，这些粉末源自现有的添加剂制造工艺流程，用于在非闭环添加剂制造机器中进行航空航天零件的后续添加剂制造。这种粉末可以是预合金粉末或商业纯粉末。本规范不限于作为重复使用材料来源的特定添加剂制造工艺流程。其目的是定义必要的程序和要求，以实现金属粉末原料的所需清洁度和性能，并将其重新引入产生此类粉末的相同添加剂制造工艺中。本规范拟与添加剂制造的相关AMS粉末规范和AMS工艺规范一起使用。 除非另有规定，否则按照本规范制备的重复使用粉末应符合原始原始粉末规范规定的物理和化学属性，以生产航空航天零件，并提供相应AMS材料规范规定的同等特性和性能。

This specification prescribes process requirements for batch processing of used, metal powder originating from an existing additive manufacturing process workflow for reuse in subsequent additive manufacturing of aerospace parts in non-closed loop additive manufacturing machines. Such powders may be pre-alloyed or commercially pure. This specification is not limited to a specific additive manufacturing process workflow as the originating source of material to be reused. It is intended to define those procedures and requirements necessary to achieve required cleanliness and performance of metal powder feedstock to be reintroduced into the same additive manufacturing process from which such powder originated. This specification is intended to be used in conjunction with relevant AMS powder specifications and AMS process specifications for additive manufacturing. Unless otherwise specified, powder prepared for reuse following this specification is intended to be conforming in physical and chemical attributes as defined by the originating virgin powder specification for the purposes of producing aerospace parts, providing equivalent characteristics and properties as specified by the corresponding AMS material specification.