AA 7178 is a wrought aluminum alloy containing zinc, magnesium and copper capable of heat treatment to yield strengths of typically 73-75 ksi. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-306. Producer or source: Various aluminum companies.