PROMET BRONZE No. 100 is a manganese bronze containing alpha and beta phases and offering an excellent combination of mechanical properties. It is recommended for cast gears, bearings, propellers and marine hardware. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Cu-163. Producer or source: American Crucible Products Company.