Incoloy 825 Washers

Incoloy 825 Washers are essential industrial components, precision-manufactured by Zeron Fastners, designed to be used under the head of a bolt or a nut. They perform critical functions, primarily distributing the load of the fastener and preventing damage to the material surface being joined. Made from the specialized nickel-iron-chromium alloy Incoloy 825 (UNS N08825), these washers provide an exceptional level of corrosion resistance, particularly against reducing acids (like sulfuric and phosphoric acid), and offer high immunity to stress-corrosion cracking in chloride media. This superior performance makes them indispensable in bolting assemblies for severe service applications in chemical processing, oil and gas, pickling plants, and waste disposal systems, ensuring the longevity and integrity of the joint.

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Incoloy 825 Washers

Chemical Composition (Incoloy 825 Washers)

Element Composition (%)
Nickel (Ni) 38.0 to 46.0
Chromium (Cr) 19.5 to 23.5
Iron (Fe) Balance
Molybdenum (Mo) 2.5 to 3.5
Copper (Cu) 1.5 to 3.0
Titanium (Ti) 0.6 to 1.2
Carbon (C) 0.05 max

Mechanical Properties (Incoloy 825 Washers)

Property Value (Annealed)
Tensile Strength, min (Alloy) 585 MPa (85 ksi)
Yield Strength (0.2% Offset), min (Alloy) 240 MPa (35 ksi)
Hardness, max 170 HB (95 HRB)
Density 8.14 g/cmΒ³ (0.294 lb/inΒ³)
Modulus of Elasticity (E) 195 GPa (28,300 ksi)

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