Hastelloy Alloy
B-3
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Hastelloy B-3
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Hastelloy B-3 Introduction
Solid Solution
Strengthened Alloy
Resistance
Behavior
Overview
As a leading supplier & manufacturer in China, AEETHER supply cost-effective Hastelloy B-3 Products.
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. It is used in numerous chemical process industry (CPI) applications, especially in the construction of reaction vessels for pure, reducing acid service.
The molybdenum content of the nickel-molybdenum (B-type) alloys is such that there is a strong tendency for phases other than the desirable (face-centered cubic) gamma phase to form in the microstructure, particularly in the temperature range 500°C to 900°C. The most deleterious of these alternate phases is Ni4Mo, which forms quickly at certain temperatures, affects ductility, and reduces resistance to stress corrosion cracking.
The chief attribute of B-3® alloy, as compared with other modern B-type materials, is its greatly improved structural stability (in particular its reduced susceptibility to Ni4Mo). The time-temperature-transformation diagram shown above illustrates the advantages of B-3 alloy over its predecessor (B-2 alloy). Whereas B-2 alloy suffers from the rapid formation of Ni4Mo at around 750°C, it takes several hours (at around 650°C), to induce deleterious second phases in B-3® alloy. This is due to the judicious use of minor elements and a shift in the molybdenum content, to induce the slowly-forming Ni3Mo instead.
Iso-Corrosion Diagrams
Each of these iso-corrosion diagrams was constructed using numerous corrosion rate values, generated at different acid concentrations and temperatures (up to the boiling point). The blue line represents those combinations of acid concentration and temperature at which a corrosion rate of 0.1 mm/y (4 mils per year) is expected, based on laboratory tests in reagent grade acids. Below the line, rates under 0.1 mm/y are expected. The red line in the sulfuric acid diagram indicates the combinations of acid concentration and temperature at which a corrosion rate of 0.5 mm/y (20 mils per year) is expected. Above the red line, rates over 0.5 mm/y are expected. Between the blue and red lines, corrosion rates are expected to fall between 0.1 and 0.5 mm/y. These diagrams do not predict the corrosion rates above the boiling point curves.
Hastelloy B-3 Chemical Composition
S ≤ 0.010%
Si ≤ 0.10%
C ≤ 0.01%
Mn ≤ 3.00%
P ≤ 0.030%
Zr ≤ 0.10%
Al ≤ 0.50%
Ti ≤ 0.20%
Cu ≤ 0.20%
Co ≤ 3.00%
Nb ≤ 0.20%
Ta ≤ 0.20%
V ≤ 0.20%
W ≤ 3.0%
Fe: 1.0% ~ 3.0%
Mo: 27.0% ~ 32.0%
Cr: 1.0% ~ 3.0%
Ni: 65.0% ~ 71.0%
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Hastelloy B-3 Standards
Data Sheet
Physical Properties
| Density | g/cm3 | 9.22 | |
|---|---|---|---|
| lb/in.3 | 0.333 | ||
| Melting Range | °F | 2500 - 2585 | |
| °C | 1370 - 1418 | ||
Mechanical Properties
| Form | Thickness | Test Temperature | Yield Strength (0.2% Offset) |
Tensile Strength | Elongation | ||||
|---|---|---|---|---|---|---|---|---|---|
| in | mm | °F | °C | ksi | MPa | ksi | MPa | % | |
| Sheet | 0.125 | 3.2 | RT | RT | 61 | 421 | 125 | 862 | 53 |
| Sheet | 0.125 | 3.2 | 200 | 93 | 55 | 379 | 121 | 834 | 57 |
| Sheet | 0.125 | 3.2 | 400 | 204 | 47 | 324 | 110 | 758 | 60 |
| Sheet | 0.125 | 3.2 | 600 | 316 | 44 | 303 | 104 | 717 | 63 |
| Sheet | 0.125 | 3.2 | 800 | 427 | 42 | 290 | 102 | 703 | 62 |
| Sheet | 0.125 | 3.2 | 1000 | 538 | 39 | 269 | 98 | 676 | 59 |
| Sheet | 0.125 | 3.2 | 1200 | 649 | 46 | 317 | 104 | 717 | 56 |
| Plate | Multiple | RT | RT | 58 | 400 | 128 | 883 | 58 | |
| Plate | Multiple | 200 | 93 | 54 | 372 | 122 | 841 | 58 | |
| Plate | Multiple | 400 | 204 | 48 | 331 | 115 | 793 | 61 | |
| Plate | Multiple | 600 | 316 | 44 | 303 | 111 | 765 | 62 | |
| Plate | Multiple | 800 | 427 | 41 | 283 | 108 | 745 | 62 | |
| Plate | Multiple | 1000 | 538 | 40 | 276 | 106 | 731 | 62 | |
| Plate | Multiple | 1200 | 649 | 42 | 290 | 107 | 738 | 65 | |
Hastelloy B-3 Applications
FAQ
Why is Hastelloy B-3 relatively expensive?
This is mainly because the alloy contains a large amount of molybdenum. Hastelloy B-3 is a nickel-molybdenum alloy. Nickel is a relatively expensive metal, and molybdenum is several times more expensive. Therefore, if your application will not expose the alloy to a severely reducing environment, we recommend Hastelloy C-276, which is more affordable.
Could you describe your smelting process?
We use vacuum induction melting (VIM) combined with electroslag remelting (ESR). Strictly speaking, all superalloys should use this smelting route to ensure the required purity. Using other smelting methods may result in performance instability or quality defects during production.
What exactly does purity refer to?
Purity refers to the percentage of impurity or harmful elements in the alloy. These impurities may originate from insufficient purity in the raw materials or contamination during the smelting process. The lower the percentage, the higher the purity, and the better the material's mechanical and processing properties.
What is solid solution strengthening?
It refers to the process where the matrix elements of an alloy dissolve other elements to form a solid solution. The direct effect of this dissolution is an increase in the alloy's strength, hence the name solid solution strengthening. Common matrix elements include nickel, cobalt, and iron, while chromium, molybdenum, tungsten, and niobium are typical solid solution elements.
Is Hastelloy B-3 suitable for room temperature or high temperature?
Hastelloy B-3 performs perfectly at both room temperature and high temperature. Hastelloy B-3 contains a large amount of nickel, which, as the alloy matrix, allows the alloy to maintain a stable austenitic structure at any temperature. Molybdenum not only provides solid solution strengthening but also greatly improves the alloy's high-temperature corrosion resistance. Therefore, it is perfectly suitable for high-temperature applications.
Can product shapes be customized to meet requirements?
Of course! We not only provide the standard products shown on this page but also offer extended processing. For example, seamless pipes can be bent into U-shaped pipes, and round bars and plates can be cut into disc shapes. We also support customization of non-standard shapes such as rings and blocks.
What exactly do mechanical properties refer to?
They describe the response characteristics of a material under external forces. Tensile properties are one of the most common types, with tensile strength, yield strength, elongation, and reduction of area being typical tensile property indicators. These reflect a material's performance during tensile stress from different perspectives, such as strength, deformation, and fracture.
What exactly do physical properties refer to?
They refer to the inherent physical characteristics of a material, not properties acquired through processing. Unlike mechanical properties, physical properties are not altered by forging, heat treatment, or other processing techniques. Common physical properties include melting point, density, and electromagnetic properties.
Related Article
More Hastelloy Grades +
B
S ≤ 0.030%
Si
Si ≤ 1.00%
C ≤ 0.05%
Mn
Mn ≤ 1.00%
P ≤ 0.040%
V
V: 0.20% ~ 0.40%
Co
Co ≤ 2.50%
Fe
Fe: 4.0% ~ 6.0%
Mo
Mo: 26.0% ~ 30.0%
Cr
Cr ≤ 1.0%
Ni
Ni: 58.0% ~ 64.2%
B-2
S ≤ 0.030%
Si ≤ 0.10%
C ≤ 0.02%
Mn
Mn ≤ 1.00%
P ≤ 0.040%
Co
Co ≤ 1.00%
Fe
Fe ≤ 2.0%
Mo
Mo: 26.0% ~ 30.0%
Cr
Cr ≤ 1.0%
Ni
Ni: 65.0% ~ 74.0%
B-3
S ≤ 0.010%
Si ≤ 0.10%
C ≤ 0.01%
Mn
Mn ≤ 3.00%
P ≤ 0.030%
Zr ≤ 0.10%
V
V ≤ 0.20%
W
W ≤ 3.0%
Co
Co ≤ 3.00%
Nb
Nb ≤ 0.20%
Ta
Ta ≤ 0.20%
Al
Al ≤ 0.50%
Ti
Ti ≤ 0.20%
Cu
Cu ≤ 0.20%
Fe
Fe: 1.0% ~ 3.0%
Mo
Mo: 27.0% ~ 32.0%
Cr
Cr: 1.0% ~ 3.0%
Ni
Ni: 65.0% ~ 71.0%
C
S ≤ 0.030%
Si
Si ≤ 1.00%
C
C ≤ 0.08%
Mn
Mn ≤ 1.00%
P ≤ 0.040%
V
V ≤ 0.35%
W
W: 3.0% ~ 4.4%
Co
Co ≤ 2.50%
Fe
Fe: 4.0% ~ 7.0%
Mo
Mo: 15.0% ~ 17.0%
Cr
Cr: 14.5% ~ 16.5%
Ni
Ni: 50.0% ~ 58.0%
C-4
S ≤ 0.030%
Si ≤ 0.08%
C ≤ 0.015%
Mn
Mn ≤ 1.00%
P ≤ 0.040%
Co
Co ≤ 2.00%
Ti
Ti ≤ 0.70%
Fe
Fe ≤ 3.0%
Mo
Mo: 14.0% ~ 17.0%
Cr
Cr: 14.0% ~ 18.0%
Ni
Ni: 58.2% ~ 72.0%
C-22
S ≤ 0.020%
Si ≤ 0.08%
C ≤ 0.015%
Mn
Mn ≤ 0.50%
P ≤ 0.020%
V
V ≤ 0.35%
W
W: 2.5% ~ 3.5%
Co
Co ≤ 2.50%
Fe
Fe: 2.0% ~ 6.0%
Mo
Mo: 12.5% ~ 14.5%
Cr
Cr: 20.0% ~ 22.5%
Ni
Ni: 50.1% ~ 63.0%
C-22HS
S ≤ 0.015%
Si ≤ 0.08%
C ≤ 0.01%
Mn
Mn ≤ 0.50%
P ≤ 0.025%
B ≤ 0.006%
W
W ≤ 0.8%
Co
Co ≤ 1.00%
Ta
Ta ≤ 0.20%
Al
Al ≤ 0.50%
Cu
Cu ≤ 0.50%
Fe
Fe ≤ 1.8%
Mo
Mo: 15.5% ~ 17.4%
Cr
Cr: 20.0% ~ 21.4%
Ni
Ni: 56.6% ~ 64.5%
C-276
S ≤ 0.030%
Si ≤ 0.08%
C ≤ 0.01%
Mn
Mn ≤ 1.00%
P ≤ 0.040%
V
V ≤ 0.35%
W
W: 3.0% ~ 4.5%
Co
Co ≤ 2.50%
Fe
Fe: 4.0% ~ 7.0%
Mo
Mo: 15.0% ~ 17.0%
Cr
Cr: 14.5% ~ 16.5%
Ni
Ni: 51.0% ~ 63.5%
C-2000
S ≤ 0.010%
Si ≤ 0.08%
C ≤ 0.01%
Mn
Mn ≤ 0.50%
P ≤ 0.025%
Co
Co ≤ 2.00%
Al
Al ≤ 0.50%
Cu
Cu: 1.30% ~ 1.90%
Fe
Fe ≤ 3.0%
Mo
Mo: 15.0% ~ 17.0%
Cr
Cr: 22.0% ~ 24.0%
Ni
Ni: 51.0% ~ 61.7%
G-3
S ≤ 0.030%
Si
Si ≤ 1.00%
C ≤ 0.015%
Mn
Mn ≤ 1.00%
P ≤ 0.040%
W
W ≤ 1.5%
Co
Co ≤ 5.00%
Nb + Ta ≤ 0.50%
Nb + Ta ≤ 0.50%
Cu
Cu: 1.50% ~ 2.50%
Fe
Fe: 18.0% ~ 21.0%
Mo
Mo: 6.0% ~ 8.0%
Cr
Cr: 21.0% ~ 23.5%
Ni
Ni: 36.9% ~ 45.4%
G-30
S ≤ 0.020%
Si
Si ≤ 0.80%
C ≤ 0.03%
Mn
Mn ≤ 1.50%
P ≤ 0.040%
W
W: 1.5% ~ 4.0%
Co
Co ≤ 5.00%
Nb
Nb + Ta: 0.30% ~ 1.50%
Ta
Nb + Ta: 0.30% ~ 1.50%
Cu
Cu: 1.00% ~ 2.40%
Fe
Fe: 13.0% ~ 17.0%
Mo
Mo: 4.0% ~ 6.0%
Cr
Cr: 28.0% ~ 31.5%
Ni
Ni: 30.2% ~ 47.2%
G-35
S ≤ 0.015%
Si
Si ≤ 0.60%
C ≤ 0.05%
Mn
Mn ≤ 0.50%
P ≤ 0.030%
V
V ≤ 0.20%
W
W ≤ 0.6%
Co
Co ≤ 1.00%
Al
Al ≤ 0.40%
Cu
Cu ≤ 0.30%
Fe
Fe ≤ 2.0%
Mo
Mo: 7.6% ~ 9.0%
Cr
Cr: 32.25% ~ 34.25%
Ni
Ni: 51.5% ~ 60.1%
N
S ≤ 0.020%
Si
Si ≤ 1.00%
C: 0.04% ~ 0.08%
Mn
Mn ≤ 1.00%
P ≤ 0.015%
B ≤ 0.010%
V
V ≤ 0.50%
W
W ≤ 0.5%
Co
Co ≤ 0.20%
Al + Ti ≤ 0.5%
Al + Ti ≤ 0.50%
Cu
Cu ≤ 0.35%
Fe
Fe ≤ 5.0%
Mo
Mo: 15.0% ~ 18.0%
Cr
Cr: 6.0% ~ 8.0%
Ni
Ni: 64.9% ~ 78.9%
S
Si
Si ≈ 0.40%
C ≤ 0.02%
Mn
Mn ≤ 0.50%
B ≤ 0.015%
W
W ≤ 1.0%
La ≈ 0.020%
Co
Co ≤ 2.00%
Al
Al ≤ 0.25%
Fe
Fe ≤ 3.0%
Mo
Mo ≈ 15.0%
Cr
Cr ≈ 16.0%
Ni
Ni ≥ 67.0%
W
S ≤ 0.030%
Si
Si ≤ 1.00%
C
C ≤ 0.12%
Mn
Mn ≤ 1.00%
P ≤ 0.040%
V
V ≤ 0.60%
W
W ≤ 1.0%
Co
Co ≤ 2.50%
Fe
Fe: 4.0% ~ 7.0%
Mo
Mo: 23.0% ~ 26.0%
Cr
Cr: 4.0% ~ 6.0%
Ni
Ni: 55.8% ~ 69.0%
X
S ≤ 0.030%
Si
Si ≤ 1.00%
C
C: 0.05% ~ 0.15%
Mn
Mn ≤ 1.00%
P ≤ 0.040%
B ≤ 0.008%
W
W: 0.2% ~ 1.0%
Co
Co: 0.50% ~ 2.50%
Nb
Nb ≤ 0.50%
Al
Al ≤ 0.50%
Ti ≤ 0.15%
Fe
Fe: 17.0% ~ 20.0%
Mo
Mo: 8.0% ~ 10.0%
Cr
Cr: 20.5% ~ 23.0%
Ni
Ni: 41.3% ~ 53.7%