Electrite Ultra Cobalt is a T-6 type high cobalt high-speed steel especially suited for high production machining of heat treated parts where excessive frictional heat necessitates maximum red hardness and wear resisting qualities. This datasheet provides information on composition and hardness as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: TS-27. Producer or source: Latrobe Steel Company.