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PRODUCTS
Product Details
Hastelloy B-3
Hastelloy B-3 is a nickel-molybdenum alloy offering exceptional resistance to hydrochloric, hydrobromic, and sulfuric acids, with improved structural stability for demanding chemical processing applications.
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Category
Nickel Alloy
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Grade
Hastelloy B-3 / UNS N10675 / 2.4600
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Standard
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Product Form
ASTM B333 / ASTM B335 / ASTM B622 / ASTM B619 / ASTM B564
Plate / Sheet / Strip / Billet / Bar / Wire / Pipe / Tube / Forging / Fittings
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Thickness
0.5–100 mm
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Width
1000–2500 mm
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Length
2000–6000 mm
Features
Hastelloy B-3 is a nickel-molybdenum corrosion-resistant alloy developed for severe reducing environments. It provides extremely high resistance to pure hydrochloric, hydrobromic and sulfuric acids while offering improved structural stability compared with earlier B-type alloys.
The alloy is ductile in the mill-annealed condition, can be formed and welded, and offers strong resistance to chloride-induced stress corrosion cracking. Its improved thermal stability reduces concerns associated with detrimental phase formation during fabrication and service.
Hastelloy B-3 is widely used in chemical-processing equipment handling strongly reducing acids, including reactors, piping, heat exchangers and pressure-containing components.
Surface Finish | Pickled / Bright / Ground / Machined |
Technique | Hot Rolled / Cold Rolled / Forged / Hot Formed / Mill Annealed |
Applications | Chemical Reactors, Acid Processing Equipment, Heat Exchangers, Piping Systems, Pressure Vessels, Reducing-Acid Service |
Exceptional resistance to hydrochloric acid
Excellent resistance to hydrobromic and sulfuric acids
Improved structural stability compared with earlier B-type alloys
Good resistance to stress corrosion cracking
Good weldability and formability
Suitable for reducing-acid environments
Good resistance to fluoride-bearing media
Excellent performance in chemical-process equipment
Chemical Composition (%)
Mechanical Properties (Typical)
Element | Composition (%) |
Ni | ≥ 65.0 |
Mo | 28.5 nominal |
Cr | 1.5 nominal |
Fe | 1.5 nominal |
W | ≤ 3.0 |
Mn | ≤ 3.0 |
Co | ≤ 3.0 |
Al | ≤ 0.50 |
Ti | ≤ 0.20 |
Si | ≤ 0.10 |
C | ≤ 0.010 |
Nb | ≤ 0.20 |
V | ≤ 0.20 |
Cu | ≤ 0.20 |
Ta | ≤ 0.20 |
Zr | ≤ 0.010 |
Property | Typical Value |
Tensile Strength | Approx. 862–883 MPa |
Yield Strength (0.2%) | Approx. 400–421 MPa |
Elongation | Approx. 53–58% |
Hardness | Approx. 92–95 HRB |
Density | Approx. 9.22 g/cm³ |
Melting Range | 1370–1418°C |
Mechanical properties may vary depending on product form, dimensions, processing condition, and applicable material specification.