UMEN ALLOY 9 is a manganese bronze having excellent combination of strength and corrosion resistance in fresh and sea water. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-57. Producer or source: Lumen Bearing Company.