CHASE 444 BRONZE is a special free-cutting Phosphor Bronze, Grade B-2. It is used primarily for automatic screw machine products, bearings and gears. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-43. Producer or source: Chase Brass & Copper Company Inc..