An alloy, usually based on nickel, cobalt or iron, developed for high temperature service where relatively severe mechanical stressing is encountered and where high surface stability is frequently required.
The highest performance alloys used for the most demanding applications. Typically these are formulated with a wide range of components, based on nickel, with tailored properties that allow use in moving components in jet turbines.
A superalloy, or high-performance alloy, is an alloy able to withstand extreme temperatures that would destroy conventional metals like steel and aluminum. Superalloys exhibit excellent mechanical strength and creep resistance at high temperatures, good surface stability, and corrosion and oxidation resistance. Superalloys typically have a austenitic face-centered cubic crystal structure.