ELEKTRON Alloy Elektron MSR-B is a magnesium casting alloy developed to offer good properties while retaining good foundry characteristics. The alloy is used in aerospace and military applications. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: MG-74. Producer or source: Magnesium Elektron Wrought Products, North America.