René 41
René 41 is an age-hardenable nickel-based superalloy capable of maintaining exceptionally high strength in the temperature range of 1200°F to 1800°F (650°C to 980°C). It offers one of the highest strength-to-weight ratios of any superalloy available in this operating range.
- Common Forms: Sheet, Strip, Plate, Round Bar, Wire.
- Key Feature: Extreme strength up to 1800°F.
- Hardening: Age-hardened via Titanium and Aluminum.
- Corrosion: Excellent oxidation resistance at high heat.
René 41 is the material of choice when standard superalloys like Inconel 718 or Waspaloy reach their temperature limits. Originally developed by General Electric, it is designed for components that require maximum tensile strength and creep-rupture resistance in the hottest sections of jet engines and missile systems.
Extreme Temp Strength
Retains ultra-high mechanical properties up to 1800°F (980°C), making it superior to many other precipitation-hardened alloys.
Creep-Rupture Resistance
Excellent resistance to deformation under load over time at high temperatures, critical for rotating turbine components.
Oxidation Resistance
The high Chromium and Cobalt content provides good resistance to oxidation and hot corrosion in combustion environments.
| Element | Content (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 18.0 - 20.0 |
| Cobalt (Co) | 10.0 - 12.0 |
| Molybdenum (Mo) | 9.0 - 10.5 |
| Titanium (Ti) | 3.0 - 3.3 |
| Aluminum (Al) | 1.4 - 1.6 |
| Iron (Fe) | 5.0 max |
*Note: High Ti/Al content provides aggressive age hardening.
| Product Form | Standards (AMS) |
|---|---|
| Sheet, Strip, Plate | AMS 5545 |
| Bar, Forgings, Rings | AMS 5712, AMS 5713 |
| Wire (Welding) | AMS 5800 |
To meet the extreme operational demands of the aerospace and defense sectors, we supply René 41 in fully certified mill forms designed for fabricating high-temperature rotating engine parts and structural airframes.
Sheet, Strip & Plate
High-strength flat rolled stock essential for manufacturing heat shields, afterburner components, and structural skins for missiles and rockets.
Bar & Rod
Supplied for precision CNC machining of critical gas turbine fasteners, structural bolting, and specialized high-temperature engine hardware.
Forgings & Rings
Custom forged blocks and seamless rolled rings serving as the foundation for highly stressed turbine wheels and hot-section partitions.
Wire
Specialized wire stock utilized for fabricating extreme high-temperature springs operating in environments that exceed the limits of Inconel X-750.
| Property | Room Temp | At 1400°F (760°C) |
|---|---|---|
| Tensile Strength | 206 ksi (1420 MPa) | 165 ksi (1135 MPa) |
| Yield Strength (0.2%) | 154 ksi (1060 MPa) | 135 ksi (930 MPa) |
| Elongation | 14% | 16% |
| Hardness (Rockwell C) | 35 - 45 HRC | -- |
*Note: Properties shown are typical for solution treated and aged material.
Jet Engine Components
Turbine blades, wheels, afterburner parts, and nozzle partitions exposed to direct combustion.
Missile Structures
Hot airframe components and structural skins for high-speed missiles and rockets.
Spacecraft
Re-entry heat shields and bolting for manned space capsules (historical use in Project Mercury).
Springs
High-temperature springs operating in environments too hot for Inconel X-750.
Need René 41 Sheet or Bar?
We supply high-performance René 41 in sheet, plate, and bar. Full aerospace certification (AMS 5545 / 5712) included.
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