René 41 is a nickel-based high temperature alloy developed by General Electric. It retains high strength in the 600–1,000 °C (1,200–1,800 °F) 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.[1]
| Cr | Ni | Mo | Co | Al | Ti | B | C | Fe | Mn | Si | S | Cu | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 18.00% | Balance | 9.00% | 10.00% | 1.40% | 3.00% | 0.003% | 0.06% | -- | -- | -- | -- | -- |
| Max | 20.00% | Balance | 10.50% | 12.00% | 1.80% | 3.30% | 0.01% | 0.12% | 5.00% | 0.10% | 0.50% | 0.015% | 0.50% |
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.[2]
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