NIMONIC® alloy 80A – Properties, applications and technical data
NIMONIC® alloy 80A is an age-hardenable nickel-chromium superalloy developed for high strength, oxidation resistance and creep resistance at elevated temperatures. The material is designed for long-term operation in demanding environments where thermal stability and mechanical integrity are essential. The alloy is widely used in the energy, aerospace and process industries where reliability is critical.
Properties of NIMONIC® alloy 80A
NIMONIC® alloy 80A is strengthened by the addition of titanium, aluminium and carbon, which enables age hardening and provides excellent high-temperature strength up to approximately 815°C. The material exhibits a stable microstructure, good oxidation resistance and very good creep resistance under long-term loading.
NIMONIC® alloy 80A (UNS N07080 / Werkstoffnr 2.4952 & 2.4631) is manufactured by controlled melting processes. High-frequency melting is used for extruded shapes while electroslag refined material is used for forging grades where high structural integrity is required. Vacuum refined variants are available for applications with particularly high demands on purity and performance.
The alloy is used in gas turbine components such as blades, rings and discs, high-strength bolts, pipe supports for nuclear boilers, casting inserts and cores, and exhaust valves for cars.
- Type: Age-hardenable nickel-chromium superalloy
- Alloy: Ni-Cr-Ti-Al (NIMONIC® 80A)
- Structure: Austenitic nickel-based superalloy
- Designations: NIMONIC® 80A, Alloy 80A, UNS N07080, Werkstoffnr 2.4952 / 2.4631, AMS 5542, AMS 5696
Advantages
- High strength at elevated temperatures
- Excellent creep resistance up to approximately 815°C
- Good oxidation resistance
- Stable microstructure under long-term loading
- Good malleability and formability
Limitations
- Higher material cost than standard alloys
- Requires controlled heat treatment for optimal performance
- Not intended for extremely sulfur-rich environments
Typical applications
Gas turbines
Blades, rings and discs for high temperature operation.
Nuclear industry
Pipe supports and structural components.
Casting & tooling
Casting inserts and cores for applications with high thermal stress.
Automotive industry
Exhaust valves and other heat-stressed components.
Corrosion and oxidation resistance
NIMONIC® alloy 80A offers good resistance to oxidation and thermal degradation in high temperature environments. The material maintains structural integrity under prolonged exposure and is suitable for demanding thermal applications.
Environments where NIMONIC® alloy 80A performs well
- High temperature environments
- Oxidizing atmospheres
- Long-term thermal loading
- Structural applications in turbine systems
Environments to avoid
- Extremely sulfur-rich environments
- Applications outside the alloy's temperature design or without proper heat treatment
Technical data (aged condition)
| Yield strength (0.2%) |
~600–800 MPa |
| Tensile strength |
~900–1100 MPa |
| Elongation at break |
~15–25% |
| Density |
~8.19 g/cm³ |
| Modulus of elasticity |
~210 GPa |
| Recommended maximum temperature |
≤815°C |
| Weldability |
Good – requires controlled process and heat treatment if necessary |
With a global network of reliable suppliers, we offer customized solutions and fast access to the right superalloy for your needs.
Contact us if you need technical advice or a quote – we will help you find the right material for your application.
Buy NIMONIC® alloy 80A from HARALD PIHL – your specialist in high-performance alloys with global delivery.
Our strengths
- Large stock of nickel-based superalloys
- Fast global delivery
- Full material certification
- Standards according to ASTM / AMS / ISO
