Hastelloy C276 Socket Head Cap Screws

**Hastelloy C276** Socket Head Cap Screws are precision fasteners characterized by a cylindrical head and an internal hexagonal (socket) drive, allowing for high torque application with minimal clearance required around the head. They are primarily used to fasten machine parts, fixtures, and tooling. By utilizing the super-alloy Hastelloy C276, a premium nickel-molybdenum-chromium alloy, these screws gain exceptional corrosion resistance to virtually all chemical process environments, including strong acids, wet chlorine, and contaminated mineral acids. This resilience makes them essential components in high-precision, corrosive assemblies within the chemical processing, pharmaceutical, and offshore oil and gas industries. Zeron Fasteners manufactures and supplies reliable, high-strength nickel alloy Socket Head Cap Screws to demanding dimensional and material specifications.

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Hastelloy C276 Socket Head Cap Screws

Chemical Composition (Hastelloy C276 Socket Head Cap Screws)

Element Composition (%)
Nickel (Ni) Balance
Molybdenum (Mo) 15.0 to 17.0
Chromium (Cr) 14.5 to 16.5
Iron (Fe) 4.0 to 7.0
Tungsten (W) 3.0 to 4.5
Cobalt (Co) 2.5 max
Manganese (Mn) 1.0 max
Carbon (C) 0.01 max

Mechanical Properties (Hastelloy C276 Socket Head Cap Screws)

Property Value (Minimum)
Tensile Strength, min 690 MPa (100 ksi)
Yield Strength (0.2% Offset), min 283 MPa (41 ksi)
Elongation, min 40%
Hardness (Rockwell B), max 100 HRB
Modulus of Elasticity (E) 205 GPa (29,700 ksi)

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