Böhler (or Boehler) S393 is a high-speed steel made by the powder metallurgy process with excellent toughness and red hardness. This datasheet provides information on composition, physical properties, and hardness. It also includes information on surface qualities as well as forming, heat treating, machining, and powder metal forms. Filing Code: TS-751. Producer or source: Voestalpine High Performance Metals Corporation.