It contains 60-75% nickel, 15-25% chromium and 5-10% iron. It has gained importance especially with its high temperature and high corrosion resistance. The presence of this Super alloy, which has the property of carrying loads at high temperatures such as 1000 - 1150 ° C, in magnetic environments causes deterioration in its structure.
The most known and used high temperature alloy is Inconel. Inconel Alloys were originally developed by Wiggin Alloys (Hereford, UK) research teams to support the development of the Whittle jet engine in the 1940s. Now the name Inconel is a registered trademark of Special Metals Corporation for a family of austenitic nickel-chromium-based superalloys. These alloys are oxidation-corrosion resistant materials that are very suitable for extreme environments exposed to pressure and heat. When heated, it forms a thick, stable, passivating oxide layer that protects the surface against further attack. As a result of the thermally induced crystal cavity of aluminum and steel, it maintains strength in a wide temperature range that is attractive for high temperature applications. High temperature strength is enhanced by solid solution strengthening or precipitation hardening depending on the alloy.
They are difficult to process using radiation cold shaping techniques due to their hardening. Mostly gas turbine blades, gaskets, burners, turbocharger rotors and gaskets, electric submersible well pump motor shafts, high temperature fittings, chemical processing and pressure vessels, heat exchanger pipes, steam generators and nuclear pressure core components, water reactors, natural pollutant gases gas processing, firearm sound suppressor explosion screens, Formula 1, NASCAR etc. used in exhaust systems. It is increasingly used in the boilers of incinerators. It has a wide range of applications in cryogenic storage tanks, boreholes and wellheads and aviation.