Unimach No. 1 is a 5% chromium hot work steel recommended for construction equipment operating in the temperature range of 400-1000 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: TS-115. Producer or source: Cyclops Corporation.