Nimonic 80A* * Trade name of Special Metals Group of Companies
W.NR 2.4952
W.NR 2.4631
UNS N07080
AWS 031
W.NR 2.4631
UNS N07080
AWS 031
Nimonic 80A is a Nickel-Chromium alloy which is precipitation
hardenable. It has largely been superseded by Nimonic 90 and Inconel
X-750, but because of the low Cobalt content, it is still specified for
nuclear applications.
hardenable. It has largely been superseded by Nimonic 90 and Inconel
X-750, but because of the low Cobalt content, it is still specified for
nuclear applications.
Applications include:
- Gas Turbine Components
- Nuclear Industry
- Fasteners
| Approximate Chemical Composition | |
| Cr | 18-21% |
| Ti | 1.8-2.7% |
| Al | 1.0-1.8% |
| Co | 2% max |
| Ni | BAL |
| DENSITY | 8.19 g/cm3 | 0.296 lb/in3 |
| MELTING POINT | 1365oC | 2490oF |
| COEFFICIENT OF EXPANSION | 12.7 µm/m °C ( 20 - 100°C) |
7.1 x 10-6 in/in
°F ( 70 - 212°F) |
| MODULUS OF RIGIDITY | 85 kN/m2 | 12328 ksi |
| MODULUS OF ELASTICITY | 222 kN/m2 | 32199 ksi |
| CONDITION OF SUPPLY | HEAT TREATMENT (AFTER FORMING) |
| Solution Annealed | Age harden at 700oC (1290oF) for 16 hours and air cool. |
| Spring Temper | Age harden at 600oC (1110oF) for 16 hours and air cool. |
| CONDITION |
APPROX TENSILE STRENGTH |
APPROX SERVICE TEMPERATURE |
||||
| Solution Annealed | 800-1000 N/mm2 | 116-145 ksi | - | - | ||
| Solution Annealed + Aged | 1200-1400 N/mm2 | 174-203 ksi | up to 550oC | up to 1020oF | ||
| Spring Temper | 1300-1500 N/mm2 | 189-218 ksi | - | - | ||
| Spring Temper + Aged | 1500-1800 N/mm2 | 218-261 ksi | up to 350oC | up to 660oF | ||
| STANDARDS | |||
| BS HR 601 | BS HR 601 | BS 3076 NA 20 | ASTM B637 |
