Hastelloy B3 Round Bar (UNS N10675)
Hastelloy B3 Round Bar is a nickel–molybdenum alloy designed as the most advanced grade in the B-family, offering superior resistance to hydrochloric acid and other strong reducing environments. Compared to Hastelloy B and B2, Hastelloy B3 provides improved thermal stability, better fabricability, and enhanced resistance to intergranular corrosion, even after welding or exposure to elevated temperatures.
Hastelloy B3 Round Bar (also known as Alloy B3 Round Bar) maintains excellent mechanical strength at high temperatures and shows good resistance to pitting and stress corrosion cracking in reducing media. However, it is not recommended for oxidizing environments.
Key Features
- Exceptional resistance to hydrochloric acid at all concentrations
- Improved resistance to intergranular corrosion compared to B & B2
- Better thermal stability and fabrication characteristics
- Good resistance to pitting in reducing environments
- Good weldability with reduced risk of heat-affected zone cracking
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | N10675 |
| DIN | 2.4600 |
| EN | NiMo28 |
| JIS | NW 1067 |
Sizes
| Diameter Range | Length |
|---|---|
| 6 mm – 300 mm | 3 m, 6 m, Cut to Length |
| Custom Sizes | As per requirement |
Hastelloy B3 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | Balance |
| Molybdenum (Mo) | 27.0 – 32.0 |
| Iron (Fe) | ≤ 3.0 |
| Chromium (Cr) | ≤ 0.01 |
| Carbon (C) | ≤ 0.01 |
| Manganese (Mn) | ≤ 3.0 |
| Silicon (Si) | ≤ 0.10 |
UNS N10675 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 760 MPa |
| Yield Strength | ≥ 345 MPa |
| Elongation | ≥ 40% |
| Hardness | ~220 HB |
Alloy B3 Round Bar Physical Properties
| Property | Value |
|---|---|
| Density | 9.22 g/cm³ |
| Melting Range | 1330 – 1380°C |
| Thermal Conductivity | ~10.4 W/m·K |
| Electrical Resistivity | ~1.14 µΩ·m |
Types of Hastelloy B3 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
Reviews
There are no reviews yet.