Overview
NIMONIC Alloy 80A (UNS N07080) is a precipitation-hardenable nickel-chromium superalloy containing Ni 74.5, Cr 20.5, Al 1.25, and Ti 2.4, designed for high-temperature service up to 815°C (1500°F). The combined aluminum and titanium additions form gamma-prime precipitates during aging, providing excellent high-temperature strength and creep resistance. NIMONIC 80A is one of the most widely used superalloys for gas turbine components, jet engine exhaust systems, and high-temperature fasteners. The alloy maintains good oxidation resistance and mechanical stability under prolonged exposure to elevated temperatures.
Description (English)
NIMONIC Alloy 80A is supplied in the heat-treated condition of 1975°F air cool plus 1300°F, producing yield strength of 621 MPa, tensile strength of 1062 MPa, elongation of 39%, and hardness of HRB 34. Bars and forgings are manufactured to ASTM A 637 standard. The precipitation-hardening response from the Al + Ti additions delivers superior creep and stress-rupture properties compared to solid-solution strengthened NIMONIC 75. The alloy is widely specified for gas turbine blades and discs, jet engine afterburner components, and high-temperature bolted assemblies in aerospace and power generation industries.
Size Range
- Ø 6 - 300
- Length: up to 6000
Chemical Composition
| Element | Value |
|---|---|
| Ni | 74.5 |
| Cr | 20.5 |
| Al | 1.25 |
| Ti | 2.4 |
| Fe | 0.5 |
| C | 0.05 |
Mechanical Properties
| productCenter.property | Value |
|---|---|
| Yield Strength | 621 MPa |
| Tensile Strength | 1062 MPa |
| Elongation (in 2 in) | 39% |
| Hardness | HRB34 |
Physical Properties
| Property | Unit | Value |
|---|---|---|
| Density | g/cm³ | 8.19g/cm³ |
| Melting Range | °C | 1320 - 1365°C |
| Thermal Conductivity (20°C) | W/m·K | 12.1W/m·K |
| Electrical Resistivity (20°C) | μΩ·cm | 122µΩ·cm |
| Specific Heat Capacity (20°C) | J/kg·K | 448J/kg·K |
Applications
- Gas turbine blades and discs
- Jet engine exhaust systems
- Afterburner components
- High-temperature fasteners
- Turbine wheels
- Combustion system components
- Power generation components