DOWMETAL G is a moderate strength, heat-treatable casting alloy, suitable for permanent mold and 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 corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Mg-15. Producer or source: The Dow Chemical Company.