BETHLEHEM M-2 is a molybdenum-tungsten type of high-speed steel. In general, it can be used for the same applications as the 18 tungsten-4 chromium-1 vanadium (AISI Type T1) high-speed steel. Its higher carbon content (relative to Type T1) and balanced composition produce properties applicable to all general-purpose high-speed uses. 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 surface treatment. Filing Code: TS-319. Producer or source: Bethlehem Steel Corporation.