René 41 is a

nickel Nickel is a chemical element; it has symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive, but large pieces are slo ...

-based high temperature

alloy An alloy is a mixture of chemical elements of which in most cases at least one is a metal, metallic element, although it is also sometimes used for mixtures of elements; herein only metallic alloys are described. Metallic alloys often have prop ...

developed by

General Electric General Electric Company (GE) was an American Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1892, incorporated in the New York (state), state of New York and headquartered in Boston. Over the year ...

. It retains high strength in the temperature range. It is used in jet engine and missile components, and other applications that require high strength at extreme temperatures. René 41 is considered a nickel alloy based upon its chemical composition. René 41 was used to create the outer shell of the Mercury space capsule, due to its ability to retain high strength at very high temperatures.

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Technical data
Nickel alloys Superalloys Aerospace materials Refractory metals {{Alloy-stub