About Alloy
Hastelloy B3 (UNS N10675) is a nickel-molybdenum alloy with significant resistance to hydrochloric acid at all concentrations and temperatures. It also offers excellent resistance to other acids such as sulfuric, acetic, and phosphoric acids, as well as resistance to pitting and stress corrosion cracking. Hastelloy B3 is an improved version of Hastelloy B2, with enhanced thermal stability and resistance to stress corrosion cracking in the presence of reducing media.
The alloy’s high molybdenum content provides exceptional resistance to corrosion, while its low carbon content minimizes carbide precipitation during welding, ensuring the material’s corrosion resistance in the welded condition. Hastelloy B3 is often used in chemical processing, pollution control, and oil and gas industries, where it is exposed to aggressive chemical environments.
In addition to its corrosion resistance, Hastelloy B3 offers good fabricability and is readily formed, welded, and machined. Its versatility and reliability make it a popular choice for applications requiring resistance to a wide range of corrosive environments.
Overall, Hastelloy B3 is a high-performance alloy that provides exceptional resistance to corrosion and stress-related issues, making it suitable for a variety of demanding industrial applications. Its ability to withstand aggressive chemical environments, combined with its excellent fabricability, makes it a valuable material in industries where corrosion resistance is critical.
Product Form
ASTM B333
ASTM B335
ASTM B366
ASTM B564
ASTM B619
ASTM B622
Chemical Composition
|
Element |
Content (%) |
|
Nickel, Ni |
65 min |
|
Molybdenum, Mo |
27-32 |
|
Cobalt, Co |
3 max |
|
Manganese, Mn |
3 max |
|
Tungsten, W |
3 max |
|
Iron, Fe |
1-3 |
|
Chromium, Cr |
1-3 |
|
Aluminum, Al |
0.5 max |
|
Copper, Cu |
0.2 max |
|
Niobium, Nb |
0.2 max |
|
Tantalum, Ta |
0.2 max |
|
Titanium, Ti |
0.2 max |
|
Vanadium, V |
0.2 max |
|
Zirconium, Zr |
0.1 max |
|
Phosphorus, P |
0.03 max |
|
Sulfur, S |
0.01 max |
|
Carbon, C |
0.01 max |
Property
|
Properties |
Metric |
Imperial |
|
Tensile strength (0.125in.) |
0.88 GPa |
129 ksi |
|
Yield strength (0.125in.) |
0.44 GPa |
64.5 ksi |
|
Elongation at break (0.125in.) |
57.50% |
57.50% |
Application
Hastelloy B3 is a nickel-based alloy known for its excellent corrosion resistance, especially in acidic environments. Its applications include:
Chemical Industry: Used in equipment for handling hydrochloric and hydrofluoric acids, and in chemical reactors and desulfurization units.
Petrochemical Industry: Applied in cracking furnaces and catalyst beds due to its high-temperature and corrosive resistance.
Pharmaceutical Industry: Employed in reactors and containers for drug production.
Marine Engineering: Suitable for seawater processing systems and marine equipment.
Power Generation: Used in boilers and heat exchangers dealing with acidic gases.
Aerospace: Applied in specific components exposed to corrosive environments.
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