Beijing Hownew Energy Technology Group Co., Ltd vincent@hownewenergy.com 86-10-53681027
Hastelloy B3 (UNS N10675) Alloy:
Material Grade: Hastelloy B3
-US Grade: UNS N10675
Hastelloy B3 (UNS N10675) is a nickel-based high-temperature alloy composed of elements such as nickel, molybdenum, and cobalt, with a nickel content of about 65%. This alloy is an improved version of Hastelloy B2, featuring enhanced thermal stability which boosts its corrosion resistance. Additionally, Hastelloy B3 has improved thermal and cold forming characteristics. In recent years, it has been increasingly used in the manufacture of chemical equipment.
This summary provides an insight into the composition and upgraded properties of Hastelloy B3, distinguishing it as an advanced material suitable for challenging industrial applications where enhanced high-temperature performance and corrosion resistance are required.
Chemical composition
| C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≥ | Ni≥ | Mo≥ | Cu≤ |
| 0.01 | 0.10 | 3.00 | 0.030 | 0.010 | 1.00-3.00 | 65.0 | 27.0-32.0 | 0.20 |
| Nb/Ta≤ | Al≤ | Ti≤ | Fe≤ | Co≤ | V≤ | W≤ | Ni+Mo | Ta≤ |
| 0.20 | 0.50 | 0.20 | 1.00-3.00 | 3.00 | 0.20 | 3.00 | 94.0-98.0 | 0.20 |
The primary advantage of Hastelloy B-3 alloy over Hastelloy B-2 is its outstanding toughness even when briefly exposed to medium temperatures, a situation that typically occurs during the production heat treatment processes. While Hastelloy B-2 is prone to embrittlement when briefly exposed to temperatures around 700°C, Hastelloy B-3 exhibits significant resistance to embrittlement and can withstand such exposure for nearly several hours. This resistance provides a substantial benefit in the manufacturing of complex components, such as forming devices, where thermal stability during processing is critical. This enhanced toughness and thermal stability make Hastelloy B-3 a preferred choice for applications requiring robust performance in varying thermal environments.
The unique properties of Hastelloy B3 alloy make it an indispensable material in the chemical industry, especially when handling highly corrosive chemicals. It is commonly used in the manufacture of reactors, heat exchangers, pipes, and other equipment and components requiring corrosion resistance. Additionally, B3 alloy is also suitable for use in the pharmaceutical industry, environmental engineering, as well as the extraction and processing of oil and natural gas. This wide range of applications highlights its robustness and versatility in confronting challenging environmental conditions and aggressive substances.
