This specification has been declared “NONCURRENT” by the Aerospace Materials Division, SAE, as of October, 2003. 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 an aluminum alloy powder metallurgy product in the form of round extrusions up to 3.5 inches (89 mm) in diameter and rectangular and other solid extrusions up to 10 square inches (64.5 cm\u2) in cross-sectional area. The maximum extrusion length is 100 inches (2.5m).

These extrusions have been used typically for parts requiring good strength, but usage is not limited to such applications.