Nickel Alloy X, Hastelloy® X

Also sold as Nickel Alloy X, Hastelloy® X is a popular and effective nickel-chromium-iron-molybdenum alloy. Nickel Alloy X and Hastelloy X offer users a wide range of principal features. These include:

  • High degree of oxidation resistance up to 2200° F
  • Outstanding high-temperature strength
  • Easily fabricated including forming and welding
  • Good ductility after prolonged exposure at high-temperatures
  • Good resistance to chloride stress-corrosion cracking
  • Resistant to carburization and nitriding
  • Develops a protective oxide film that does not spall off

Because of its outstanding capabilities, Nickel Alloy X and Hastelloy X are in use throughout the aircraft, furnace, petrochemical, and chemical processing industries. Some of the more popular applications include:

  • Gas turbine engines
  • Transition ducts
  • Combustor cans
  • Spray bars and flame holders
  • Afterburners, tailpipes, and cabin heaters
  • Chemical processing retorts, muffles, and tubing

To be considered Nickel Alloy X or Hastelloy X, an alloy must meet certain levels of chemical composition including:

  • Cr 20.5-23%
  • Fe 17-20%
  • Mo 8-10%
  • Mn 1% max
  • Si 1% max
  • C .05-.15%
  • Ni bal

At Continental Steel we have been a supplier of Nickel Alloy X and Hastelloy X in round bar and strip for many years. It is important to note that Nickel Alloy X and Hastelloy X meet the critical ASME Boiler and Pressure Vessel Code, along with other industry standards.

We stock and sell Nickel Alloy X, Nickel Alloy X, Hastelloy® X in Round Bar & Strip.

Chemical Composition of Nickel Alloy X and Hastelloy® X


.05 - .15


20.5 - 23.0


0.5 - 2.5


17.0 - 20.0


1.0 max


8.0 - 10.0




0.04 max


0.03 max


1.0 max


0.2 - 1.0

Back to Top