ILZRO-12 is a zinc-base foundry alloy recommended for general purpose castings. It has economic advantages by virtue of lower material costs and a lower casting temperature than competitive copper-base alloys. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness, creep, and fatigue. It also includes information on casting, heat treating, machining, and joining. Filing Code: Zn-12. Producer or source: Zinc and zinc alloy mills and foundries.