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Incoloy 825

Incoloy 825

INCOLOY Alloy 825 is composed of nickel, iron, chromium and additional components of molybdenum, copper and titanium. This combination provides exceptional corrosion resistance in both oxidizing and reducing conditions.

Equivalent grades

• Incoloy 825
• UNS N08825
• W.Nr. 2.4858
• Alloy 825
• NiCr21Mo

Chemical Composition Reference


Physical Property Reference

• Density: 8.14 g/cm³

• Tensile Strength: 690 MPa

• Yield Strength: 310 MPa

• Melting Point: 1370 - 1400 ℃

• Yield Strength: 441 MPa

• Elongation %: 30

• Tensile Strength: 772 MPa

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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Incoloy 825

Essential details
Incoloy 825 is highly resistant to corrosion. It has a high nickel content, sufficient to resist chloride ion stress corrosion cracking, and a very stable austenite structure. The levels of molybdenum and copper enable the alloy to resist reducing agents and acids. Chromium gives resistance to oxidising conditions, such as nitric acid solutions, nitrates and oxidising salts.

The alloy is titanium stabilised to resist pitting and intergranular attack after fabrication, particularly welding, which includes heating in the critical sensitisation temperature range (650°C – 760°C).


- Propeller shafts

- Phosphoric acid evaporators

- Tank trucks

- Hot vessels for food, water, sea water

- Sulphuric acid piping and vessels

- Marine exhaust systems

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