Nimonic® 80A
(UNS N07080)

A nickel-based alloy offering excellent corrosion resistance and very high mechanical properties after hardening.

Nimonic® 80A Superalloy is a nickel-chromium-based material with excellent corrosion and oxidation resistance.

About Nimonic® 80A

The product is a precipitation hardenable alloy with additional alloying elements of aluminium, titanium and carbon. The product is a wrought, age-hardenable material developed to operate in service temperatures up to 815° C (1500° F). Nimonic® 80A performs well in any application where high temperature and continual stresses are significant considerations. Traditionally, it finds use in applications requiring these characteristics, such as gas turbines and nuclear generators; in the motorsport sector, material applications include exhaust valves in racing engines and spindles and fasteners.

Machining:

Supplied in the solution-treated condition makes it easier to machine, and subsequent ageing treatment results in very high mechanical performance properties with outstanding resistance to creep and fatigue. The alloy may be readily formed and welded using conventional welding methods.

Corrosion Resistance:

The corrosion resistance of Nimonic® 80A in oxidising atmospheres is excellent - this includes heating and cooling conditions. This protection is due to the chromium oxide film formed on the surface of the alloy, which also offers resistance at elevated temperatures.

Annealing:

Nimonic® alloy 80A should be annealed at 1079° C (1975° F) for about 8 hours and air-cooled. Note that Nimonic® 80A is similar to Nimonic® 75 but can be made precipitation hardenable.