Incoloy 825 Hex Bolts

Incoloy 825 Hex Bolts are premium industrial fasteners manufactured by Zeron Fastners, specifically engineered for highly corrosive environments. This superalloy (UNS N08825) is a nickel-iron-chromium composition with additions of molybdenum, copper, and titanium, which provides outstanding resistance to many corrosive media. Crucially, Incoloy 825 offers exceptional resistance to stress-corrosion cracking in chloride-bearing environments and excellent resistance to both reducing acids (like sulfuric and phosphoric acid) and oxidizing chemicals. The hexagonal head allows for easy tightening with a wrench, making it a reliable choice for securing components in chemical processing plants, oil and gas extraction (especially sour gas wells), pollution control, and nuclear fuel reprocessing.

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Incoloy 825 Hex Bolts

Chemical Composition (Incoloy 825 Hex Bolts)

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 Hex Bolts)

Property Value (Annealed)
Tensile Strength, min 585 MPa (85 ksi)
Yield Strength (0.2% Offset), min 240 MPa (35 ksi)
Elongation, min (%) 30
Hardness (Brinell), max 170 HB
Modulus of Elasticity (E) 195 GPa (28,300 ksi)

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