Hastelloy B2, UNS N10665

Alloy B (UNS N10001) was developed to resist hydrochloric acid. Alloy B2 has replaced it. Alloy B3 (UNS N10675), a newer variant, shows greater thermal stability. However, its popularity is hampered by its availability. All of these materials resist reducing acids well, but oxidizing acids poorly.

Alloy B2 Fasteners

  • Lock Nuts
  • Set Screws
  • Dowel Pins
  • Pipe Plugs
  • Vented Screws
  • 12-Pt Flange Screws
  • Custom Fasteners


  • Plate, Sheet & Strip: ASTM B333, ASME SB333
  • Rod & Bar: ASTM B335, ASME SB335

Material Properties

Material Properties: Alloy B2

Technical Data Sheet

Industries & Applications

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