Nimonic 90 – Composition, Properties and Applications of Nimonic 90 Nickel-Chromium-Cobalt Alloy by Alloy Wire International
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Technical Data Sheet
| Chemical Composition Limits |
| Weight % |
Ni |
Cr |
Co |
Ti |
Al |
C |
Si |
Cu |
Fe |
Mn |
B |
S |
Zr |
Pb |
| Alloy 90 |
Bal |
18-21 |
15-21 |
2-3 |
1-2 |
0.2 max |
1.0 max |
0.2 max |
1.5 max |
1.0 max |
0.02 max |
0.015 max |
0.15 max |
0.0020 max |
Nimonic alloy 90 is a precipitation hardenable nickel-chromium-cobalt alloy strengthened by the addition of Titanium and Aluminium. Alloy 90 has a high stress rupture strength and creep-resistant at temperatures to 920°C. Nimonic Alloy 90 is typically used in extreme stress applications such as turbine blades, hot working tools, exhaust reheaters, disc and high-temperature springs.
The recommended heat treatments for Nimonic 90 are as follows:
Nimonic 90 Bar
Solution Treatment - 1080 °C (1975 °F) for 8 hours + air cool or oil/ water quench
Precipitation Heat Treatment (As per BS HR2) - 700 °C (1290 °F) for 16 hours + air cool
Nimonic 90 Sheet
Solution Treatment - 1100-1150 °C for 1-10 minutes + air cool or oil /water quench
Stabilization Heat Treatment - 925 °C for 1 hour + air cool
Precipitation Heat Treatment - 750 °C for 4 hours and air cool |
| Availability: |
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| NIMONIC 90 Plate |
NIMONIC 90 Fittings |
NIMONIC 90 Tube / Pipe |
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| NIMONIC 90 Bar |
NIMONIC 90 Sheet |
NIMONIC 90 Coil /Strap |
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| NIMONIC 90 Fasteners / Flanges |
NIMONIC 90 Powder |
NIMONIC 90 Welding Product |