ELECTRITE TATMO is a molybdenum type high-speed steel and is recommended as a general purpose tool steel. It has good toughness and excellent grindability along with a relatively low cost. These factors make it an economic and efficient member of the high-speed family of tool steels. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-268. Producer or source: Latrobe Steel Company.