ECLIPSALOY 517 is a cerium-magnesium sand casting alloy having excellent creep resistance up to 500 deg. F. It is suitable for applications where pressure tightness is required and good corrosion resistance is important. It responds to an age-hardening heat treatment. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Mg-29. Producer or source: Bendix Aviation Corporation.