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Hastelloy B-2

Hastelloy B-2

Hastelloy B-2 is a nickel-molybdenum alloy, exhibiting solid-solution strengthening and noteworthy resistance to acidic conditions. It can be employed in its welded condition due to its ability to inhibit the formation of grain-boundary carbide deposits in the welded area.

Equivalent grades

• Hastelloy B-2
• UNS N10665
• W.Nr. 2.4617
• NiMo28

Chemical Composition Reference


Physical Property Reference

• Density: 9.2 g/cm³

• Tensile strength: 760 MPa

• Yield strength: 350 MPa

• Melting Point: 1370 ℃

• Elongation: 40%

Stock & Dimensions

Our warehouse has a large number of stock to provide you with a variety of products in different sizes, and can also customize the size according to your needs.
• Bar: 0.5~600mm Diameter
• Coil: 0.5~150mm Thick
• Plate: 0.5~200mm Thick
• Pipe: 6~630mm External Diameter; 0.5~40mm Wall Tick
• Available in specific sizes

Product Forms

We provide you with a variety of product forms, including but not limited to:
• Bar/Rod
• Pipe/Tube
• Coil/Strip
• Plate/Sheet/Circle
• Wire
• Fitting (Flange, Elbow, Tee...)
• Customize

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Hastelloy B-2

Essential details
Hastelloy B2 is a solid solution strengthened, nickel-molybdenum alloy, with significant resistance to reducing environments like hydrogen chloride gas, and sulfuric, acetic and phosphoric acids. Molybdenum is the primary alloying element which provides significant corrosion resistance to reducing environments. This nickel steel alloy can be used in the as-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 hydrochloric acid at all concentrations and temperatures. In additions, Hastelloy B2 has excellent resistance to pitting, stress corrosion cracking and to knife-line and heat-affected zone attack. Alloy B2 provides resistance to pure sulfuric acid and a number of non-oxidizing acids.


- Food Processing Industry

- Fabrication Industry

- Oil and Gas Industry

- Chemical Industry

- Plumbing

- General Purpose Applications

- Heating

- Water supply Systems

- Power Plant

- Paper & Pulp Industry

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