VANADIUM TYPE D is a medium carbon, chromium-vanadium tool steel having high strength, toughness and fatigue resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-52. Producer or source: Vanadium Alloys Steel Company.