Aluminum 308.0 is a heat-treatable sand and permanent-mold aluminum casting alloy recommended for general-purpose castings. It has good casting characteristics and pressure tightness. Among its many applications are ornamental grills and architectural components. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-224. Producer or source: Various aluminum companies.