Incoloy 825 Stud Bolts

Incoloy 825 Stud Bolts are specialized, high-integrity fasteners manufactured by Zeron Fastners, designed primarily for securing flange connections in critical piping and pressure vessel systems. This high-performance nickel-iron-chromium alloy (UNS N08825), with essential additions of molybdenum, copper, and titanium, is celebrated for its outstanding resistance to severe corrosion. Incoloy 825 provides superior protection against stress-corrosion cracking in chloride-rich environments and excellent defense against both reducing acids (like sulfuric and phosphoric acid) and oxidizing agents. Stud bolts are typically supplied fully threaded and are essential in industries such as chemical processing, marine engineering, sour gas service, and pollution control, where failure due to corrosive attack is unacceptable.

Related Products

Incoloy 825 Stud Bolts

Chemical Composition (Incoloy 825 Stud 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 Stud Bolts)

Property Value (Solution 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)

Features Product