Nickel Alloys Incoloy 800 Washers

Nickel Alloys Incoloy 800 Washers are thin, disc-shaped components used to sit beneath the head of a bolt or a nut in a bolted connection. Their function is essential: to distribute the clamping load evenly, prevent surface damage, and, in the case of spring washers, prevent loosening from vibration. Manufactured from Incoloy 800 (UNS N08800), these washers maintain dimensional stability and mechanical properties even at high temperatures and in environments prone to oxidation and carburization. This makes them indispensable for use alongside Incoloy 800 fasteners in critical assemblies within high-temperature furnaces, heat exchangers, and chemical processing equipment.

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Incoloy 800 Washers

Nickel Alloys Incoloy 800 Washers Chemical Composition

Element Content (%)
Nickel (Ni) 30.0 – 35.0
Chromium (Cr) 19.0 – 23.0
Iron (Fe) Balance
Manganese (Mn) 1.50 max
Silicon (Si) 1.00 max
Copper (Cu) 0.75 max
Titanium (Ti) 0.15 – 0.60
Aluminum (Al) 0.15 – 0.60
Carbon (C) 0.10 max

Nickel Alloys Incoloy 800 Washers Mechanical Properties

Property (Annealed) Value (min)
Tensile Strength 75 ksi (515 MPa)
Yield Strength (0.2% Offset) 30 ksi (205 MPa)
Elongation 30%
Hardness (Brinell) 170 typical

Nickel Alloys Incoloy 800 Washers Feature Products