NIMONIC Alloy 80A (UNS N07080) Properties and Applications

Introduction to NIMONIC Alloy 80A

NIMONIC Alloy 80A, designated as UNS N07080, is a nickel-chromium alloy known for its excellent high-temperature strength and oxidation resistance. Developed for applications requiring durability under extreme conditions, this alloy is widely used in aerospace, power generation, and industrial heating systems.

Key Properties of NIMONIC Alloy 80A

NIMONIC Alloy 80A exhibits several notable properties that make it suitable for demanding environments:

High-Temperature Strength: Retains mechanical integrity at temperatures up to 815°C (1500°F).

Oxidation Resistance: Resists degradation in oxidizing atmospheres due to its chromium content.

Creep Resistance: Performs well under prolonged stress at elevated temperatures.

Corrosion Resistance: Resists corrosion in various aggressive environments.

Weldability: Can be welded using conventional techniques, though post-weld heat treatment is recommended.

Chemical Composition

The alloy primarily consists of:

Nickel (Ni): ~75%

Chromium (Cr): ~19-22%

Titanium (Ti): ~1.8-2.7%

Aluminum (Al): ~1.0-1.8%

Iron (Fe): ≤1.0%

Carbon (C): ≤0.10%

Mechanical Properties

Typical mechanical properties of NIMONIC Alloy 80A include:

Tensile Strength: 900-1200 MPa

Yield Strength: 600-900 MPa

Elongation: 15-25%

Hardness: 200-300 HB

Applications of NIMONIC Alloy 80A

Due to its exceptional properties, NIMONIC Alloy 80A is used in various high-performance applications:

Aerospace: Turbine blades, combustion chambers, and exhaust systems.

Power Generation: Gas turbine components and heat exchangers.

Industrial Heating: Furnace parts and heat treatment equipment.

Chemical Processing: Components exposed to high temperatures and corrosive environments.

Conclusion

NIMONIC Alloy 80A (UNS N07080) is a versatile material designed for extreme conditions. Its combination of high-temperature strength, oxidation resistance, and corrosion resistance makes it indispensable in industries where reliability under stress is critical. Whether in aerospace or industrial settings, this alloy continues to prove its value in demanding applications.