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Nimonic 81

Nimonic 81

NIMONIC 81 is a specially-formulated, high-chromium nickel-chromium alloy featuring titanium and aluminium additives for strengthening. This alloy boasts superior corrosion resistance when used at higher temperatures. Compared to other NIMONIC alloys, 81 contains a higher chromium concentration.

Equivalent grades

• Nimonic 81
• UNS N06002
• W.Nr. 2.4665
• Alloy 81

Chemical Composition Reference


Physical Property Reference

• Density: 8.06 g/cm³

• Tensile Strength: 1050 MPa

• Yield Strength: 600 MPa

• Elongation at Break: 40%

Stock & Dimensions

Our warehouse has a large number of stock to provide you with a variety of products in different sizes, and can also customize the size according to your needs.
• Bar: 0.5~600mm Diameter
• Coil: 0.5~150mm Thick
• Plate: 0.5~200mm Thick
• Pipe: 6~630mm External Diameter; 0.5~40mm Wall Tick
• Available in specific sizes

Product Forms

We provide you with a variety of product forms, including but not limited to:
• Bar/Rod
• Pipe/Tube
• Coil/Strip
• Plate/Sheet/Circle
• Wire
• Fitting (Flange, Elbow, Tee...)
• Customize

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Nimonic 81

Essential details
NIMONIC alloy 81 is a precipitation hardenable nickel-chromium alloy with titanium and aluminium as additives for strengthening. This alloy exhibits excellent corrosion resistance at high temperatures.

The chromium content of the alloy is higher than other NIMONIC alloys; hence the alloy is corrosion resistant at high temperatures. Apart from being corrosion resistant, the alloy also shows good creep resistance and tensile strength at elevated temperatures.


- Gas turbine engineering

- Piston engine exhaust valves

- Heat exchange plant

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