Project Description
Nimonic 90 (UNS N07090 / W.Nr. 2.4632)
Nimonic 90 (UNS N07090 / W.Nr. 2.4632) 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.
Equivalent Grades
| Trademark | GB | GOST | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
| Nimonic 90 | GH4090 | – | Nimonic 90 | N07090 | NiCr20Co18Ti | 2.4632 | NC20T | NiCr20Ti HR 5 | – | – |
Chemical Composition, %
| Alloy | C | Si | Mn | P | S | Cr | Ni | Co | Al | Ti | Cu | Fe |
| Nimonic 90 | ≤0.13 | ≤1.00 | ≤1.00 | ≤0.020 | ≤0.015 | 18.0-21.0 | Bal | 15.0-20.0 | 1.0-2.0 | 2.0-3.0 | ≤0.20 | Bal |
Typical Physical and Mechanical Properties (RT, Annealed)
| Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HRB |
| 8.18 | 1310-1370 | ≥1080 | ≥690 | ≥20 | / |
Available Products and Specifications
| Rod, Bar, Wire and Forgings | BS HR2, HR501, HR503, AMS 5829 |
| Plate, Sheet and Strip | BS HR 202 |
| Pipe and Tube | BS HR 402 |
| Welding Product | – |
| Others | – |
Features
Nimonic 90 has a high stress rupture strength and creep-resistant at temperatures to 920°C.
Applications
Nimonic 90 is typically used in extreme stress applications such as turbine blades, hot working tools, exhaust reheaters, disc and high-temperature springs.
