Hastelloy B3
Description:
HASTELLOY B-3 alloy (UNS N10675) exhibits extremely high resistance to pure hydrochloric, hydrobromic, and sulfuric acids. Furthermore, it has greatly improved structural stability compared with previous B-type alloys, leading to fewer concerns during welding, fabrication, and service.
Like other nickel alloys (in the mill annealed condition), it is ductile, can be formed and welded, and resists stress corrosion cracking in chloride-bearing solutions. Also, it is able to withstand fluoride-bearing media and concentrated sulfuric acid, both of which result in damage to zirconium alloys.
HASTELLOY B-3 alloy is available in the form of plates, sheets, strips, billets, bars, wires, pipes, tubes, and coated electrodes. It is used in numerous chemical process industry (CPI) applications, especially in the construction of reaction vessels for pure, reducing acid service.
Applications:
Chemical processes
Vacuum furnaces
Mechanical components in reducing environments
Hastelloy B3 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 |
Other Designations:
Equivalent materials to HASTELLOY B-3 are:
ASTM B333
ASTM B335
ASTM B366
ASTM B564
ASTM B619
ASTM B622
Hastelloy B3 Mechanical Properties:
|
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% |