SAE AMS4009B

This specification has been declared “NONCURRENT” by the Aerospace Materials Division, SAE, as of February, 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 on some existing designs in the future. The Aerospace Materials Division, however, does not recommend these specifications for future use in new designs.

This specification covers an aluminum alloy in the form of foil. This product has been used typically for fabrication of diffusion-bonded, fiber-reinforced-composite tape, sheet, plate, and other structural forms, but usage is not limited to such applications.