Hastelloy B2 Washers

A Washer is a thin, flat plate, typically disk-shaped with a central hole, used to distribute the load of a threaded fastener, such as a nut or bolt, preventing damage to the seating surface and reducing the chance of the fastener loosening. When manufactured from Hastelloy B2 (a Nickel-Molybdenum alloy), these washers provide critical corrosion protection in highly aggressive reducing environments, particularly those containing non-oxidizing acids like hydrochloric acid (HCl) and sulfuric acid. These environments demand fasteners and components that are virtually immune to chemical attack. Zeron Fastners is a trusted manufacturer and supplier of these specialized nickel alloy washers, ensuring the longevity and integrity of bolted joints in applications within the chemical, pharmaceutical, and fertilizer industries.

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Hastelloy B2 Washers

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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