Nimonic is now a registered trademark of Special Metals Corporation that refers to a family of nickel-based high-temperature low creep superalloys.
The main use is in gas turbine components and extremely high performance reciprocating internal combustion engines.
[1][2] Working at Inco-Mond's Wiggin facility at Birmingham in the United Kingdom, Leonard Bessemer Pfeil is credited with the development of Nimonic alloy 80 in 1941, and used in the Power Jets W.2B.
The heads of the exhaust valves as well as the turbine wheel of its Rajay turbocharger for the Corvair Spyder turbo engine were made of Nimonic 80A.
[citation needed] Nimonic 75 has been certified by the European Union as a standard creep reference material.