Wuxi Nickel Alloy New Material Technology Co., Ltd
Wuxi Nickel Alloy New Material Technology Co., Ltd
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Hastelloy B2 (UNS N10665, Werkstoff No. 2.4617) is a high-performance nickel-molybdenum alloy renowned for its exceptional resistance to reducing acids, including hydrochloric, sulfuric, acetic, and phosphoric acids. Its unique composition and microstructure make it an ideal choice for critical applications in chemical processing, pharmaceutical manufacturing, and petrochemical industries.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | Balance |
| Molybdenum (Mo) | 26.0–30.0 |
| Iron (Fe) | Max 2.0 |
| Chromium (Cr) | Max 1.0 |
| Carbon (C) | Max 0.02 |
| Manganese (Mn) | Max 1.0 |
| Silicon (Si) | Max 0.10 |
| Cobalt (Co) | Max 1.0 |
| Phosphorus (P) | Max 0.04 |
| Sulfur (S) | Max 0.03 |
| Property | Value |
|---|---|
| Density | 9.22 g/cm³ |
| Melting Point | 1330–1380°C |
| Tensile Strength | Min 760 MPa (110 ksi) |
| Yield Strength | Min 350 MPa (51 ksi) |
| Elongation | Min 40% |
| Property | Value |
|---|---|
| Elastic Modulus | 179GPa |
| Thermal Conductivity | 17.3W/m·K at room temperature |
| Coefficient of Thermal Expansion | 11.7 μm/m·°C (20–93°C) |
| Form | ASTM Standard |
|---|---|
| Bar | ASTM B335 |
| Sheet/Plate | ASTM B333 |
| Pipe (Seamless) | ASTM B622 |
| Pipe (Welded) | ASTM B619 |
| Tube (Seamless) | ASTM B622 |
| Tube (Welded) | ASTM B626 |
| Forging | ASTM B564 |
| Fitting | ASTM B366 |
Hastelloy B2 Rod is extensively used in:
Chemical reactors and heat exchangers
Piping systems handling hydrochloric acid
Pharmaceutical manufacturing equipment
Pollution control systems
Pickling and acid cleaning operations
Hastelloy B2 exhibits:
Outstanding resistance to hydrochloric acid at all concentrations and temperatures
Excellent resistance to sulfuric, acetic, and phosphoric acids
Superior resistance to hydrogen chloride gas
Exceptional resistance to pitting, stress corrosion cracking, and crevice corrosion
Resistance to knife-line and weld heat-affected zone attack
However, it should not be used in oxidizing environments or where oxidizing contaminants are present in reducing media, as this can lead to rapid corrosion and premature failure.
1. What is Hastelloy B2?
Hastelloy B2 is a nickel-molybdenum alloy designed for exceptional resistance to reducing acids and aggressive chemical environments.
2. What are the mechanical properties of Hastelloy B2?
Hastelloy B2 offers high tensile strength (min 760 MPa), yield strength (min 350 MPa), and elongation (min 40%), making it suitable for demanding applications.
3. What industries use Hastelloy B2 Rod?
Industries such as chemical processing, pharmaceuticals, petrochemicals, and pollution control utilize Hastelloy B2 Rod for its superior corrosion resistance.