Aluminum 108 is a non-heat treatable aluminum sand casting alloy having good casting characteristics and pressure tightness. It is recommended for general-purpose sand castings. 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 casting, heat treating, machining, and joining. Filing Code: Al-133. Producer or source: Aluminum Company of America.