René 41
René 41 is a nickel-based high temperature alloy developed by General Electric. It retains high strength in the 1200/1800°F (649/982°C) 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 | -- | 9.00 | 10.00 | 1.40 | 3.00 | 0.003 | -- | -- | -- | -- | -- | -- |
| 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]
The composition is: chromium 18-20%, cobalt 12%, molybdenum 9-10.5%, titanium 3.0-3.3%, aluminium 1.4-1.6% with the balance nickel.
References
- ↑ "Rene 41 Chemistry". Rolled Alloys Inc. Rolled Alloys Inc. Retrieved October 29, 2014.
- ↑ We Seven: by The Astronauts Themselves. Simon & Schuster. 1962.