NIMONIC 80A/N07080 Bar/Rod/Wire/Forging/Plate/Strip Weldable And Extensible For Chemical Process Equipment
Nimonic 80A (UNS N07080) is a nickel-chromium alloy reinforced with titanium and aluminum, offering excellent high-temperature strength, oxidation resistance, and creep resistance up to ~815°C (1500°F). It is precipitation-hardened and widely used in turbine blades, fasteners, exhaust valves, and other components exposed to heat and stress. Nimonic 80A exhibits good fatigue and thermal stability, making it ideal for aerospace, power generation, and automotive engine applications. It is available in bar, rod, wire, forging, plate, and strip forms and offers excellent mechanical performance, corrosion resistance in oxidizing environments, and reliable service life under cyclic conditions. Its good workability and weldability also support precision manufacturing and complex shaping in demanding thermal environments.
| Chemical Composition Wt.% | % | Ni | Cr | Fe | C | Mn | Si | Mo | Cu | Zr | S | Co | B | Ti | Al | Pb |
| Min | Bal. | 18 |
|
| | | 8 | | | | 0.5 | | 1.8 | 1 |
|
| Max | Bal. | 21 | 3 | 0.1 | 1 | 1 | 10 | 0.2 | 0.15 | 0.015 | 2.5 | 0.008 | 2.7 | 1.8 | 0.0025 |
| Physical Constants | Density(g/cm³) | 8.19 |
| Melting Range(℃) | 1320–1380°C |
| Minimum mechanical properties of alloy at room temperature | Typical mechanical properties | Tensile strength Rm N/mm² | Yield strength RP 0.2 N/mm² | Elongation A5 % |
| Annealing treatment | 900 | 550 | 20 |
Overview of NIMONIC 80A
NIMONIC 80A is a nickel-chromium-based superalloy that provides excellent high-temperature strength and oxidation resistance. It is designed primarily for aerospace and gas turbine applications and can maintain its integrity under extremely high temperatures (up to approximately 950°C or 1740°F). It is a precipitation-hardened alloy, making it ideal for components that operate in high-stress, high-temperature environments.
Key Features (All Forms)
Outstanding High-Temperature Strength
- Exceptional resistance to creep, fatigue, and thermal stress at elevated temperatures (up to ~950°C / 1740°F).
- Maintains high yield and tensile strength at high operating temperatures, making it perfect for turbine and engine components.
Oxidation and Corrosion Resistance
- Excellent oxidation resistance in both aerospace and industrial applications.
- Resists corrosion in hot gas environments, especially those containing sulfur, chlorine, and other reactive elements.
Precipitation Hardening
- The alloy is strengthened via precipitation hardening, which contributes to its high mechanical strength and resistance to plastic deformation.
Good Fabricability and Weldability
- Can be machined, forged, and welded (with appropriate techniques) for complex components.
- Has good formability during fabrication and weldability compared to other high-temperature alloys, although post-weld heat treatment is often required.
Resistant to Thermal Fatigue and Stress
- Excellent ability to resist thermal cycling and stress corrosion cracking in high-temperature, high-stress environments.
Form-Specific Applications
Bar / Rod
- Used in aerospace components, including gas turbine discs, blades, shafts, and fasteners.
- Ideal for high-temperature, high-strength structural applications.
Wire
- Commonly used for turbine wire, springs, welding wire, and high-temperature fasteners.
- Has excellent fatigue resistance and creep resistance even in the hottest environments.
Forging
- Forged into high-performance turbine blades, discs, seals, and ring components.
- Maintains mechanical properties and dimensional stability under prolonged exposure to elevated temperatures.
Plate / Strip
- Typically used in heat exchangers, reaction vessels, gas turbine parts, and combustion chambers.
- Offers exceptional performance in hot gas corrosion environments.
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NIMONIC 80A/N07080 Bar/Rod/Wire/Forging/Plate/Strip Weldable And Extensible For Chemical Process Equipment Images
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