Alloy 800 is a nickel-iron-chromium alloy offering high strength plus outstanding oxidation and carburization resistance at elevated temperatures, and good corrosion resistance in aqueous environments. Typical uses: process piping, heat exchangers, carburizing equipment, heating-element sheaths and nuclear steam piping. Chemistry: Ni 30.0-35.0%, Cr 19.0-23.0%, Fe min 39.5%.