Aluminum Alloy 443 is a restricted copper content (0.6% max.) die casting alloy. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on corrosion resistance as well as casting, heat treating, and machining. Filing Code: Al-315. Producer or source: Aluminum Smelting and Refining Company Inc..