STELLITE 31 PM is a cobalt-base alloy with 7.5 wt% W recommended for handling severe conditions of abrasion, heat and corrosion. The PM designation indicates prealloyed atomized powders and parts made from the powder. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on heat treating, machining, joining, and powder metal forms. Filing Code: CO-92. Producer or source: Deloro Stellite Inc.