NIMONIC alloy 90 (UNS N07090/W. Nr. 2.4632) is a NiCrCo base alloy with additions of titanium and aluminum, which makes its strength improved. It has been developed as an age-hardenable creepresisting alloy for service at temperatures up to 920°C. The alloy is used for exhaust reheaters, high-temperature spring, turbine blades, discs, forgings, ring sections and hot-working tools.
Chemical composition
| 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 |
Advantages
Specifications