Hastelloy B-3, also known as Alloy B-3, with the UNS designation N10675 and W. Nr. 2.4600, is a nickel-molybdenum alloy known for its excellent resistance to hydrochloric acid at all concentrations and temperatures. It also offers exceptional resistance to other reducing chemicals such as sulfuric, acetic, and phosphoric acids. Hastelloy B-3 is particularly well-suited for equipment handling reducing chemical environments. This alloy has a high resistance to stress corrosion cracking and provides good resistance to pitting and corrosion fatigue. It is commonly used in chemical processing, pollution control, and pharmaceutical industries, as well as in applications where resistance to corrosion in harsh environments is essential.
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sales@cocessalloys.comChemical Composition
|
Nickel (Ni) |
65% min. |
|
Molybdenum (Mo) |
27-32% |
|
Nickel+Molybdenum (Ni+Mo) |
94-98% |
|
Copper (Gu) |
0.2% max. |
|
Chromium (Cr) |
1-3% |
|
Aluminum (Al) |
0.5% max. |
|
Titanium (Ti) |
0.2% max. |
|
Iron (Fe) |
1-3% |
|
Cobalt (Co) |
3% max. |
|
Tungsten (W) |
3.0% max. |
|
Vanadium (V) |
0.2% max. |
|
Manganese (Mn) |
3.0% max. |
|
Silicon (Si) |
0.10% max. |
|
Carbon (C) |
0.01% max. |
|
Phosphorus (P) |
0.03% max. |
|
Sulfur (S) |
0.01% max. |
|
Columbium (Nb) |
0.2% max. |
|
Tantalum(Ta) |
0.2% max. |
|
Zirconium(Zr) |
0.1% max |
Physical Properties
|
Density |
9.22 g/cm³ |
|
Melting Point |
1330-1380°C (2426-2526°F) |
|
Specific Heat |
418 J/kg·K |
|
Electrical Resistivity |
1.09 μΩ·m |
|
Thermal Conductivity |
10.8 W/m·K |
|
Coefficient of Thermal Expansion |
11.1 x 10^-6 /°C (20-100°C) |
Mechanical Properties
|
Temperature |
Yield strength |
Tensile strength |
Elongation |
|||
|
0.2% Offset |
Rm |
A |
||||
|
°C |
°F |
MPa |
Ksi |
MPa |
ksi |
% |
|
20 |
68 |
283 |
41 |
690 |
100 |
50 |
Hastelloy B-3 is commonly used in various applications due to its exceptional resistance to a wide range of corrosive environments. Some typical applications include:
1. Chemical processing equipment: Hastelloy B-3 is utilized in the construction of reactors, agitators, and piping systems for handling corrosive chemicals such as sulfuric acid, hydrochloric acid, acetic acid, and phosphoric acid.
2. Pollution control: The alloy is employed in pollution control equipment, including scrubbers, ducts, and stack liners, where resistance to aggressive environments is crucial.
3. Pharmaceutical industry: Hastelloy B-3 is used in pharmaceutical manufacturing equipment where resistance to a wide range of chemicals is required.
4. Pulp and paper industry: The alloy finds applications in the construction of equipment for handling corrosive chemicals in pulp and paper manufacturing processes.
5. Waste treatment: It is used in equipment for handling corrosive substances in waste treatment facilities.
6.Petrochemical industry: Hastelloy B-3 is utilized in processes involving aggressive chemicals and high-temperature environments, such as in the production of petrochemicals and refining operations.
Specifications for Hastelloy B-3 include the following:
|
Bar and Rod |
Seamless Pipe and Tube |
Welded Pipe and Tube |
Plate, Sheet, and Strip |
Forgings |
Fittings |
|
ASTM B 335/ASME SB 335 |
ASTM B 622 / ASME SB 622 |
ASTM B 626 /ASME SB 626, B 619/ SB 619 |
ASTM B 333/ASME SB 333 |
ASTM B 564/ASME SB 564, B 462/ SB 462, B 472/ SB 472 |
ASTM B 366/ASME SB 366, B 462/ SB 462 |
Standard product forms of Hastelloy B-3 are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at sales@cocessalloys.com for full information.
