AMPCO METAL 20 is an aluminum bronze having high hardness coupled with sufficient ductility suitable for bushings and bearings subjected to heavy presssures and excessive wear. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness. It also includes information on corrosion resistance as well as casting, machining, and joining. Filing Code: Cu-47. Producer or source: Ampco Metal Inc..