Nimonic 75* Specification
*Trade name of Special Metals Group of Companies
- W.NR 2.4951
- W.NR 2.4630
- UNS N06075
- AWS 032
Applicable Standards:
- BS HR 5
- BS HR 504
Nimonic 75 is a Nickel-Chromium alloy with good corrosion and heat 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 | No |
Applications include:
- Aerospace fasteners
| Approximate Chemical Composition | |
| Ni | 80% min |
| Cr | 19.5% |
| Properties | ||
| DENSITY | 8.37 g/cm3 | 0.302 lb/in3 |
| MELTING POINT | 1380oC | 2520oF |
| COEFFICIENT OF EXPANSION | 11.0 µm/m °C (20 - 100°C) |
6.1 x 10-6 in/in
°F (70 - 212°F) |
| MODULUS OF RIGIDITY | 75.6 kN/mm2 | 10965 ksi |
| MODULUS OF ELASTICITY | 206 kN/mm2 | 29878 ksi |
| CONDITION OF SUPPLY | HEAT TREATMENT (AFTER FORMING) |
| Annealed/Spring Tempered | Stress relieve at 450 - 470°C (840 - 880°F) for 30 - 60 minutes and air cool. |
| CONDITION | APPROX TENSILE STRENGTH | APPROX SERVICE TEMPERATURE | ||
| Annealed | 700 - 800 N/mm2 | 102 - 116 ksi | -200 to +1100°C | -330 to +2010°F |
| (for lightly stressed applications) | ||||
| Spring Temper | 1200 - 1500 N/mm2 | 174 - 218 ksi | -200 to +1100°C | -330 to +2010°F |
| (for lightly stressed applications) | ||||
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