CARPENTER No. 408 Punch Steel was developed specifically to meet the needs of the pharmaceutical industry. It has the necessary wear resistance to withstand the severe conditions of handling the abrasive materials that must be pellitized. It also has high strength in combination with excellent toughness and resistance to splitting stresses. It has found a number of other uses requiring resistance to shock loading and splitting stresses, such as clutch parts, vise jaws and expander punches. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-368. Producer or source: Carpenter.