Hastelloy C-276 is a safe and extremely durable nickel / molybdenum / chromium alloy developed by Haynes International Inc.


The main components of Hastelloy C-276 are, by percentage:

  • Nickel (Ni): 55.25%
  • Chromium (Cr): 15.5%
  • Molybdenum (Mo): 16%
  • Iron (Fe): 5.5%
  • Tungsten (W): 3.75%
  • Cobalt (Co): 2.5%
  • Plus trace elements of copper, manganese, silicon, sulphur, carbon, phosphorus and vanadium

Common Industry Applications

Hastelloy C-276 shows excellent resistance to water based acids, alkalines and salts, so makes a good alternative to 316 Stainless steel for pipes, tubes and fittings. It is commonly used in the oil and gas industry for underwater applications, and for processing chemical waste.

  • Water and chemical treatment plants
  • Heat exchangers
  • Reactor units
  • Desulphurisation plants
  • Natural gas processing


  • Long-lasting and durable
  • Unrivalled resistance to seawater
  • Excellent corrosion resistance to organic acids, alkalines, salts, sulphuric acid, hydrochloric acid, hydrofluoric acid, phosphoric acid and chlorine
  • Acceptable level of corrosion resistance to nitric acid


  1. Hastelloy C-276 requires expensive raw materials, so is far more costly than other compounds
  2. The alloy hardens quickly, making machining difficult and further increasing the price. You should expect to pay about nine times as much for a Hastelloy C-276 product as you would for the equivalent in stainless steel


  • Tubes - We supply Hastelloy C-276 tubing in 3m lengths, together with a full range of fittings and valves. Tube fittings - available in 25 mm OD.

Alternative Trade Names: Hastelloy C-276 has a number of commonly used trade names, including: Inconel 276, Alloy C276, UNS N10276, Nicrofer 5716