PROMET 6 is produced in three grades: PROMET 6, PROMET 6 SK and PROMET 6 CR. These alloys comprise a series of high-lead tin bronzes, traditionally known as the bearing bronzes. 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-218. Producer or source: American Crucible Products Company.