SPS Technologies MP35N is a multiphase cobalt-nickel alloy that possesses a unique combination of ultra-high strength, good ductility and toughness, outstanding corrosion resistance, and excellent cryogenic properties. It was the first fastener superalloy developed by SPS Technologies. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as heat treating, machining, and joining. Filing Code: Co-140. Producer or source: SPS Technologies, Inc.