Bohnalite M-4 is a non-heat treatable aluminum alloy containing about 4% magnesium and characterized by excellent corrosion resistance ang good weldability. 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-97. Producer or source: Bohn Aluminum & Brass Corporation.