Firth Vickers F.I. 20 is a non-hardenable, ferritic high-chromium steel recommended for furnace parts, heat treating equipment, zinc die casting machine nozzles and other high temperature applications up to approximately 750 C. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-229. Producer or source: Firth-Vickers Stainless Steels Ltd.