Abstract Magnesium MSR-B is a heat-treatable magnesium alloy with highest yield strength of any cast magnesium alloy up to 480 F. It is pressure tight and weldable by argon-arc. It is recommended for aircraft nose wheels, missile components, transmission cases, etc. 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 low and high temperature performance, and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Mg-63. Producer or source: Magnesium Elektron Ltd.