Rene 41* Specification
*Trade name of
General Electric Inc.
- W.NR 2.4973
- UNS N07041
- AWS 120
Applicable Standards:
- AMS 5545
- AMS 5800
Rene 41 is an age hardenable nickel base alloy that has very high strength at elevated temperatures, particularly within the range of 650 - 980oC (1200 - 1800oF). Required mechanical properties can be tailored by selection of various combinations of cold work and/or heat treatments. Rene 41 also has good oxidation resistance.
| Good Mechanical Properties at Elevated Temperatures | Yes |
| Corrosion Resistant at Ambient Temperatures | No |
| Corrosion Resistant & Good Mechanical Properties at Elevated Temperatures | No |
| Oxidation Resistant | Yes |
| Precipitation Hardenable | Yes |
Applications include:
- After burner parts
- Turbine castings
- Bolts
- Other fasteners
| Approximate Chemical Composition | |
| Cr | 18 - 20% |
| Co | 12% |
| Mo | 9 - 10.5% |
| Ti | 3.0 - 3.3% |
| Al | 1.4 - 1.6% |
| Ni | BAL |
| Properties | ||
| DENSITY | 8.25 g/cm3 | 0.298 lb/in3 |
| MELTING POINT | 1345 oC | 2450 oF |
| COEFFICIENT OF EXPANSION | 13.6 µm/m °C (20 - 100°C) |
7.41 x 10-6 in/in
°F (70 - 212°F) |
| MODULUS OF RIGIDITY | 83.2 kN/mm2 | 12067 ksi |
| MODULUS OF ELASTICITY | 218.0 kN/mm2 | 31619 ksi |
| CONDITION OF SUPPLY | HEAT TREATMENT (AFTER FORMING) |
| Annealed | Age harden at 760oC (1400oF) for 16 hours and air cool. |
| Spring Temper | 1. Solution Anneal at 1065ºC (1950ºF)
for 4 hours and air cool 2. + Age at 760ºC (1400ºF) for 16 hours and air cool |
| Spring Temper | Age harden at 760ºC (1400ºF) for 16 hours and air cool |
| CONDITION | APPROX TENSILE STRENGTH | APPROX SERVICE TEMPERATURE | ||
| Annealed | 800 - 1100 N/mm2 | 116 - 159 ksi | ||
| Annealed + Aged | 1350 - 1550 N/mm2 | 196 - 225 ksi | up to +550ºC | up to +1020ºF |
| Spring Temper | 1400 - 1800 N/mm2 | 203 - 261 ksi | ||
| Spring Temper + Annealed + Aged | 1350 - 1550 N/mm2 | 196 - 225 ksi | up to +550ºC | up to +1020ºF |
| Spring Temper + Aged | 1600 - 2000 N/mm2 | 232 - 290 ksi | up to +550ºC | up to +1020ºF |
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