Inconel X-750 (UNS N07750 / W. Nr. 2.4669 / GH4145 / NiCr15Fe7TiAl) is a precipitation-hardenable nickel-chromium alloy used for its corrosion and oxidation resistance and high strength at temperatures to 1300°F. Although much of the effect of precipitation hardening is lost with increasing temperature over 1300°F, heat-treated material has useful strength up to 1800°F. This kind of alloy also has excellent properties down to cryogenic temperatures.