Hastelloy B Round Bar (UNS N10001)
Hastelloy B Round Bar is a nickel–molybdenum alloy specifically designed for excellent resistance to strong reducing environments, particularly hydrochloric acid at all concentrations and temperatures. It also offers outstanding resistance to sulfuric acid, acetic acid, and phosphoric acid under reducing conditions, making it a critical material for harsh chemical processing applications.
Hastelloy B Round Bar (also referred to as Alloy B Round Bar) provides good high-temperature strength and excellent fabricability. However, it should not be used in oxidizing environments due to susceptibility to rapid attack. Proper control of composition and processing ensures resistance to intergranular corrosion and long service life.
Key Features
- Exceptional resistance to hydrochloric acid
- Excellent performance in strong reducing environments
- Good resistance to sulfuric, acetic, and phosphoric acids
- Good high-temperature strength
- Good weldability and fabrication with proper procedures
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | N10001 |
| DIN | 2.4810 |
| EN | NiMo28 |
| JIS | NW 1001 |
Sizes
| Diameter Range | Length |
|---|---|
| 6 mm – 300 mm | 3 m, 6 m, Cut to Length |
| Custom Sizes | As per requirement |
Hastelloy B Chemical Composition
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | Balance |
| Molybdenum (Mo) | 26.0 – 30.0 |
| Iron (Fe) | ≤ 5.0 |
| Carbon (C) | ≤ 0.05 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 1.0 |
UNS N10001 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 690 MPa |
| Yield Strength | ≥ 310 MPa |
| Elongation | ≥ 40% |
| Hardness | ~200 HB |
Alloy B Round Bar Physical Properties
| Property | Value |
|---|---|
| Density | 9.24 g/cm³ |
| Melting Range | 1330 – 1380°C |
| Thermal Conductivity | ~10.2 W/m·K |
| Electrical Resistivity | ~1.15 µΩ·m |
Types of Hastelloy B Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Annealed Round Bar
- Bright / Precision Ground Round Bar
- Forged Round Bar
Applications
- Hydrochloric acid processing equipment
- Chemical reactors and heat exchangers
- Petrochemical and chemical processing plants
- Pickling equipment
- Pressure vessels and piping components
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