AA 5657 is a binary aluminum/magnesium alloy of moderate strength. It is not hardenable by heat treatment. It is strain hardenable. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-317. Producer or source: Various aluminum companies.