Hastelloy B2 Stud Bolts

A Stud Bolt (or thread-all stud) is a rod that is threaded on its full length or on both ends, often used in conjunction with two nuts to secure flange connections in piping systems. Forged or machined from Hastelloy B2 (UNS N10665), these critical fasteners possess phenomenal resistance to severe reducing environments, particularly non-oxidizing acids such as hydrochloric acid (HCl) and sulfuric acid. The high molybdenum content in the alloy provides this exceptional chemical resistance, making them ideal for handling aggressive media where conventional stainless steels would rapidly corrode. Zeron Fastners is a trusted manufacturer and supplier of these durable nickel alloy stud bolts, guaranteeing leak-proof, long-lasting assemblies in chemical processing, power generation, and pharmaceutical industries.

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Hastelloy B2 Stud Bolts

Hastelloy B2 Chemical Composition

Element Composition (%)
Nickel (Ni) Balance
Molybdenum (Mo) 26.0 to 30.0
Iron (Fe) 2.0 max
Chromium (Cr) 1.0 max
Cobalt (Co) 1.0 max
Carbon (C) 0.02 max

Hastelloy B2 Mechanical Properties

Property Value
Tensile Strength, min 690 MPa (100,000 psi)
Yield Strength (0.2% Offset), min 350 MPa (51,000 psi)
Elongation, min 40%
Hardness (Rockwell B) 90 max
Density 9.24 g/cm3 (0.334 lb/in3)

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