HWD No. 1 is a chromium-molybdenum-tungsten alloy hot work steel developed for applications where dies or tools are subject to heavy pressure or impact while in contact with hot metal. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: TS-117. Producer or source: Firth Sterling Inc..