Nimonic 90* * Trade name of Special Metals Group of Companies
W.NR 2.4632
W.NR 2.4969
UNS N07090
AWS 030
W.NR 2.4969
UNS N07090
AWS 030
A Nickel-Chromium-Cobalt alloy being precipitation
hardenable, having
high stress-rupture strength and creep resistance at high temperatures
up to about 950OC (1740OF). It is widely used and a well proven alloy in high temperature conditions.
high stress-rupture strength and creep resistance at high temperatures
up to about 950OC (1740OF). It is widely used and a well proven alloy in high temperature conditions.
Applications include:
- Aerospace Industry
- High Temperature Springs and Various
- Thermal Processing
| Approximate Chemical Composition | |
| Ni | 54% min |
| Cr | 18-21% |
| Co | 15-21% |
| Ti | 2-3% |
| Al | 1-2% |
| DENSITY | 8.18 g/cm3 | 0.296 lb/in3 | |
| MELTING POINT | 1370oC | 2500oF | |
| 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 | 82.5 kN/mm2 | 11966 ksi | |
| MODULUS OF ELASTICITY | * ** |
213 kN/m2 227 / 240 kN/mm2 |
30894 ksi 32924 / 34810 ksi |
* Solution Annealed + Aged **Spring Temper and Aged
| CONDITION OF SUPPLY | HEAT TREATMENT (AFTER FORMING) |
| Solution Annealed | Age harden at 750oC (1380oF) for 4 hours and air cool. * |
| Spring Temper | Age harden at 650oC (1200oF) for 4 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 | 1300-1400 N/mm2 | 189-203 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 501 (Spring temper) |
BS HR 502 (Solution Annealed) |
BS HR 503 | BS 3075 NA19 | AMS 5829 | NCK20TA |
