ATLAS BRAKE DIE is an electric furnace alloy steel specifically designed to provide the optimum balance of strength, wear resistance and toughness desired in brake-die applications. It is normally furnished in the heat treated and stress-relieved condition. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-217. Producer or source: Atlas Steels Company.