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Alloy B-2®

A nickel-molybdenum grade, Alloy B-2® is extremely resistant to hydrochloric acid in a wide range of temperatures.

Alloy B-2® is a solid-solution strengthened nickel alloy which is normally used in extreme reducing conditions. Alloy B2® also exhibits good resistance to hydrogen chloride, sulfuric acid and phosphoric acid.


Product formSize range fromSize range to
Alloy B-2® round bar12.7 mm190.5 mm

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Chemical Analysis



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Ideal for use within the Pharmaceutical industry

Alloy B-2® can be used in a variety of applications including:

  • Pressure vessels and reactors
  • Agitators and mixers
  • Pumps and valves
  • Gaskets
  • Pipe work and pipe spools
  • Heat exchangers

About Alloy B-2®

Alloy B-2® is a nickel-molybdenum alloy with significant resistance to reducing environments, such as hydrogen chloride gas and sulfuric, acetic and phosphoric acids. Hastelloy B-2® provides resistance to pure sulfuric acid and a number of non-oxidizing acids. The alloy should not be used in oxidizing media or where oxidizing contaminants are available in reducing media. Premature failure may occur if alloy B-2® is used where ferric iron, cupric ion and free chlorides are present.

With a high nickel content, Hastelloy B-2® is immune to chloride-induced stress corrosion cracking.



9.22 g/cm³
Melting Range:
Specific Heat Capacity:
377 J/kg.°C
Electrical Resistivity:
1.37 µΩ.m
Curie Temperature:


UNS Number:
UNS N10665
Werkstoff Number:
ASTM B333, B335, B564, B619, B622, B626, B366, B462 , B775
Download the Alloy B-2® Data Sheet Download

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