Inconel®, a nickel-chromium-molybdenum alloy, exhibits high strength, toughness, and good corrosion resistance in temperatures from cryogenic to 2200°F. It is available in a range of grades, offering different strength and corrosion resistance. The most common grades used for bolts and fasteners are Inconel® 625 and Inconel® 718.
Inconel® 625 is the most popular grade It has high oxidation resistance, high strength and creep resistance, and high corrosion resistance. It is resistant to pitting and crevice corrosion. Inconel® 718 is a hardenable alloy that exhibits excellent corrosion resistance and strength. It performs well at elevated temperatures and is twice as strong as Inconel® 625.
Inconel® is used for a wide range of applications, including low temperature to high-temperature processing, highly corrosive electronics manufacturing, turbines, pumps, chemical processing, oil & gas processing, and offshore operations. The nickel and chromium in the alloy provide protection against oxidation and the nickel and molybdenum provide protection in non-oxidizing environments.