UNS No. A02220 is an age-hardenable aluminum casting alloy. It is hard and wear resistant and has good strength at elevated temperatures. It has good foundry characteristics in many respects and is produced as sand and permanent-mold castings. Among its applications are bushings, automotive cylinder heads and pistons. 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 high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-272. Producer or source: Various aluminum companies.