Inconel 718 Stud Bolts (UNS N07718, B637 Gr 718)

Inconel 718 Stud Bolts are crucial fasteners used primarily to secure high-pressure and high-temperature flanged connections. Manufactured from the precipitation-hardenable superalloy Inconel 718 (UNS N07718), these stud bolts deliver superior mechanical strength, particularly high tensile and yield strength up to $1300^\circ\text{F}$ ($704∘C). The alloy's unique composition resists a wide spectrum of aggressive media and is highly regarded for its resistance to stress-corrosion cracking and creep-rupture. Due to this robust performance profile, Alloy 718 stud bolts are specified for critical rotating equipment, turbine casings, petrochemical processing units, and nuclear applications. Zeron Fastners ensures the supply of precisely manufactured high-temperature stud bolts that meet strict international specifications like ASTM B637 Grade 718 for optimal joint integrity.

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Inconel 718 Stud Bolts

Inconel 718 Stud Bolts Chemical Composition

Element Composition (%)
Nickel (Ni) $50.0 - 55.0$
Chromium (Cr) $17.0 - 21.0$
Iron (Fe) Balance
Niobium (Nb) $4.75 - 5.50$
Molybdenum (Mo) $2.80 - 3.30$
Titanium (Ti) $0.65 - 1.15$
Aluminum (Al) $0.20 - 0.80$
Cobalt (Co) ≤ 1.0$
Carbon (C) ≤ 0.08$

Inconel 718 Stud Bolts Mechanical Properties

Property Minimum Value (Age-Hardened)
Tensile Strength $1240 MPa / 180 KSI
Yield Strength (0.2% Offset) $1035 MPa / 150 KSI
Elongation (in 4D) $12%
Hardness (Rockwell C) $38 min
Maximum Service Temp $704^\circ \text{C} / 1300^\circ \text{F}$

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