Nimonic 90

UNS N07090 nickel_superalloy
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Higher-strength Co-bearing variant of Nimonic 80A for turbine discs and blades to 900 °C. The Co addition significantly increases gamma-prime solvus and creep resistance.

Applicable Standards

  • BS HR2
  • UNS N07090

Composition Ranges (wt %)

Element Min (%) Max (%) Typical Range
Ni 54.0 100.0 ~77.0
Cr 18.0 21.0 ~19.5
Co 15.0 21.0 ~18.0
Ti 2.0 3.0 ~2.5
Al 1.0 2.0 ~1.5
Fe — 1.5 ~0.75
Ni 54.0–100.0% Cr 18.0–21.0% Co 15.0–21.0% Ti 2.0–3.0% Al 1.0–2.0% Fe 0.0–1.5%

Typical Applications

  • Turbine discs
  • Blades to 900 °C
  • High-temp springs
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