nickel alloy wire

Hastelloy B2丨UNS N10665

Hastelloy Alloy B2,  also known as UNS N10665, is a solid solution-strengthened nickel-molybdenum alloy. It exhibits excellent corrosion resistance in various reducing media, able to withstand corrosion by hydrochloric acid at any temperature and concentration under atmospheric pressure. It also demonstrates outstanding corrosion resistance in moderately concentrated non-oxidizing sulfuric acid, various concentrations of phosphoric acid, high-temperature acetic acid, and organic acids such as formic acid, bromic acid, and hydrogen chloride gas. Additionally, it is resistant to corrosion by halogen catalysts.

Hastelloy B2 / UNS N10665 / W.Nr 2.4617

Applications of Hastelloy B2:

  • Hastelloy B2 is particularly suited for equipment handling reducing chemical environments.

  • It has applications in the chemical process industry involving sulfuric, phosphoric, hydrochloric, and acetic acid.

  • Other applications include vacuum furnaces and mechanical components in reducing environments.

Normal product forms: sheets, plates, bars, forgings, tubes, and wires.

Specifications/Standard:   ASTM B335, B564, B333, B366, B619, B622, B626

Chemical Composition:

  • Nickel (Ni): Balance

  • Molybdenum (Mo): 26.0-30.0%

  • Iron (Fe): 2.0% max

  • Carbon (C): 0.02% max

  • Cobalt (Co): 1.0% max

  • Chromium (Cr): 1.0% max

  • Manganese (Mn): 1.0% max

  • Silicon (Si): 0.10% max

  • Phosphorus (P): 0.040% max

  • Sulfur (S): 0.030% max

Physical Constants and Thermal Properties

  • Density: 9.22 g/cm³ or 0.333 lb/in³

  • Melting Point: 1427°C or 2600°F

  • Thermal expansion coefficient (@21-100°C/69.8-212°F): 10.3 µm/m°C or 5.72 µin/in°F

  • Thermal conductivity: 11.1 W/mK or 77 BTU in/hr.ft².°F

Mechanical Property:

  • Tensile Strength: 914 MPa or 133000 psi

  • Yield Strength (@strain 0.200%): 396 MPa or 57400 psi

  • Elastic Modulus: 217 GPa or 31500 ksi

  • Elongation at Break (in 50.8 mm): 55%

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