CYCLOPS S2 is a high-silicon, shock-resisting tool steel with extreme toughness. It has good ductility and toughness at high strength levels, and gives excellent service in those applications where shock and impact are major factors. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-328. Producer or source: Cyclops Corporation.