Hastelloy B-3 Nickel Alloy
Hastelloy B-3 (UNS N10675) is a nickel-molybdenum alloy with optimized iron and chromium content, offering enhanced thermal stability and reduced susceptibility to embrittlement during processing. It excels in high-temperature reducing environments, making it ideal for chemical processing equipment and oil pipelines, though unsuitable for oxidizing conditions.
Chemical Composition
|
Ni |
C |
Si |
Mn |
S |
P |
Mo |
Fe |
Cr |
Co |
Cu |
W |
Al |
Ti |
Nb |
|
|
Min |
Rem |
- |
- |
- |
- |
- |
27 |
1 |
1 |
- |
- |
- |
- |
- |
- |
|
Max |
0.01 |
0.1 |
3 |
0.01 |
0.03 |
32 |
3 |
3 |
3 |
0.2 |
3 |
0.5 |
0.2 |
0.2 |
Material Properties
|
Density |
Melting Point |
Minimum Mechanical Properties of the Alloy at Room Temperature |
||
|
Tensile Strength |
Yield Strength |
Elongation |
||
|
g/cm3 |
℃ |
Rm N/mm2 |
Rp0.2 N/mm2 |
A5% |
|
9.24 |
1370-1418 |
760 |
350 |
40 |
Standards
ASTM B335,ASTM B333,ASTM B622
Feature
Hastelloy B-3 alloy exhibits good forgeability, with a forging heating temperature of approximately 1140°C and a final forging temperature of 900°C. The average grain size of the alloy is closely related to the degree of deformation and the final forging temperature. The alloy also offers satisfactory weldability; it is typically welded in the solution-annealed condition, followed by aging treatment to restore optimal microstructure and properties.
Applications
The alloy is suitable for use in pressure vessels and pressurized equipment operating within a temperature range of -196°C to 400°C. It is widely applied in the chemical, petroleum, nuclear engineering, pharmaceutical, and environmental protection industries.
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