APEX 400 is a 4% magnesium type aluminum casting alloy having high corrosion resistance. It is not heat treatable. It is recommended for marine applications and food processing equipment. 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 high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-107. Producer or source: Apex Smelting Company.