ALUMINUM 75S is an ultra-strength aluminum alloy exhibiting exceptional mechanical properties, workability, and response to various degrees of heat treatment and refrigeration. It is suitable for highly stressed primary structures. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on low temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-5. Producer or source: Aluminum Company of America.