MAGNESIUM ZK51A is a zirconium type magnesium sand casting alloy recommended for applications requiring high yield strength and uniformity of properties. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Mg-34. Producer or source: Aluminum Company of America.