MP159 Alloy is a member of the Multiphase family of alloys possessing the unique combination of ultra-high strength, ductility and corrosion resistance. This datasheet provides information on composition, physical properties, microstructure, elasticity, and shear strength as well as creep. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Co-68. Producer or source: Latrobe Steel Company. Originally published as Multiphase MP159 Alloy, May 1974, revised June 1990.