Nimonic is a registered trademark and developed by the Special Metals Corporation in England. Nimonic is a refractory superalloy of nickel (80%) and chromium (20%), sometimes with the addition of titanium, iron, aluminum and cobalt, having a very high creep resistance.

Thanks to its high resistance to extreme temperatures and atmospheric pressure, Nimonic is particularly well suited for aircraft parts and for aircraft turbojet components.

There are different types of Nimonic: the Nimonic 75 Niminic 80A and Nimonic 90.