HastelloyB2/ UNS N0620/ AlloyB2 Tube, Sheet, Fittings, Rod

Short Description:

Hastelloy B2 is widely used in the chemical, petrochemical, energy manufacturing and pollution control fields, especially in the sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid and other industries.

Equivalent grade:


Alloy B-2

W. Nr. 2.461

DIN NiMo28

Product Detail

Product Tags

Available Products

Seamless tube, Plate, Rod, Forgings, Fasteners, Pipe Fittings.

Production Standards

Products ASTM
Bar B 574
Plate, sheet and strip B 575
Seamless pipes and fittings B 622
Welded nominal pipe B 619, B 775
Welded pipe B 626, B 751
Welded pipe fitting B 366
Forged or rolled pipe flanges and forged pipe fittings B 462
Billets and rods for forging B 472
Forgings B 564

Chemical Composition

 alloy % Ni Mo Fe Cr Co C Mn V Si P S
B2 Min  margin















Physical Properties

Density 8.50 g/cm3
Melting 1328-1358℃

Hastelloy B-2 is a solid solution strengthened nickel-molybdenum alloy with remarkable resistance to reducing environments such as hydrogen hydride gas, sulfuric acid, yanoic acid, and phosphoric acid. Molybdenum is the main alloying element that provides outstanding corrosion resistance in reducing environments. This nickel-steel alloy can be used in the welded condition because it resists the formation of grain boundary carbide precipitates in the weld heat-affected zone.

This nickel alloy provides excellent resistance to yan acid in a wide range of concentrations and temperatures. In addition, Hastelloy B2 has excellent resistance to pitting, stress corrosion cracking, and knife line and heat affected zone attacks. Alloy B2 provides resistance to pure sulfuric acid and many non-oxidizing acids.

Features of Hastelloy B-2

• Very good resistance to stress corrosion cracking and pitting
• Remarkable resistance to reducing conditions such as hydrogen chloride, sulfuric acid, acetic acid and phosphoric acid
• Resistant to hydrochloric acid at all concentrations and temperatures

Hastelloy B-2 application:

Hastelloy B-2 is widely used in chemical, petrochemical, power production and pollution control fields, especially in sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid and other industries.

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