Rene 41 (also known as Alloy 41, UNS N07041, W.Nr. 2.4973) is a nickel-chromium-based superalloy strengthened by additions of molybdenum, cobalt, and titanium. It is specifically engineered for exceptional high-temperature strength, oxidation resistance, and creep resistance. Rene 41 maintains its mechanical integrity up to about 980°C (1800°F), making it ideal for demanding aerospace and industrial gas turbine applications.
This alloy is widely used in jet engine components, turbine blades, fasteners, rings, and high-performance exhaust systems. Its outstanding combination of thermal stability, fatigue resistance, and corrosion resistance ensures long service life in severe environments. Rene 41 is available in bars, sheets, forgings, wires, and precision machined parts for aerospace, energy, and high-temperature engineering industries.
| Element | Min | Max |
| Carbon | 0.06 | 0.12 |
| Manganese | — | 0.10 |
| Silicon | — | 0.20 |
| Chromium | 18.0 | 20.0 |
| Nickel | Balance | |
| Boron | 0.003 | 0.010 |
| Iron | — | 5.00 |
| Cobalt | 10.0 | 12.0 |
| Titanium | 3.00 | 3.30 |
| Aluminum | 1.40 | 1.60 |
| Molybdenum | 9.00 | 10.50 |
| Metric | English | |
| Density | 8.25 g/cm³ | 0.298 lbs/in³ |
| Modulus of elasticity | 213 GPa | 30.9 Mpsi |
| Electrical Resistivity | 127 µohm*cm | 50.0 µohm*in |
| Thermal Conductivity | 12.6 W/(m*°C) | 88 BTU-in/(hr*ft²*°F) |
| Coefficient of thermal expansion | 13.9 µm/(m*°C) | 7.6 µin/(in*°F) |
| Cold worked % |
Yield strength | Ultimate tensile strength | Elongation % |
| 0 | 703 MPa [102 ksi] | 1138 MPa [165 ksi] | 42 |
| 20 | 1103 Mpa [160 ksi] | 1276 MPa [185 ksi] | 10.5 |
| 37 | 1476 MPa [214 ksi] | 1620 MPa [235 ksi] | 3.5 |
| 50 | 1786 MPa [259 ksi] | 2124 MPa [308 ksi] | 2.3 |
| Standard | Name |
|---|---|
| SAE | 5712, 5713 |
| WNR | 2.4973 |
| DIN | NiCr19Co11MoTi |
| ANFOR | NC19KDT |
| UNS | ATI Rene™ 41 UNS N07041 |
Standard product forms of RENE 41/alloy 41/2.4973/UNS N07041 are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at [email protected] for full information.
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