Cryodur 2357 is a shock resistant tool steel (AISI S7) with excellent toughness and high strength. It is suitable for cold and hot work applications up to 538 °C (1000 °F). This datasheet provides information on composition, physical properties, and hardness. It also includes information on low and high temperature performance as well as joining. Filing Code: TS-781. Producer or source: Schmolz + Bickenbach USA Inc..