Nimonic 80A* Specification
*Trade name of Special Metals Group of Companies
- W.NR 2.4952
- W.NR 2.4631
- UNS N07080
- AWS 031
Applicable Standards:
- BS 3076 NA 20
- ASTM B637
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 It has largely been superseded by Nimonic 90 and Inconel X-750, but because of the low Cobalt content, it is still specified for nuclear applications.
| 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:
- 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 |
| Properties | ||
| 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/mm2 | 12328 ksi |
| MODULUS OF ELASTICITY | 222 kN/mm2 | 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 |
Alternatively call us on +44 (0)1384 566775
or email us at
Print this page...
Request a Brochure...
