UNS N10675 Nickel Hastelloy Alloy B3
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Hastelloy B-3 is a nickel-molybdenum alloy with excellent resistance to pitting, corrosion, and stress-corrosion cracking plus, thermal stability superior to that of alloy B-2. In addition, this nickel steels alloy has great resistance to knife-line and heat–affected zone attack. Alloy B-3 also withstands sulfuric, acetic, formic and phosphoric acids, and other non-oxidizing media. Furthermore, this nickel alloy has excellent resistance to hydrochloric acid at all concentrations and temperatures. B-3's distinguishing feature is its ability to maintain excellent ductility during transient exposures to intermediate temperatures. Such exposures are routinely experienced during heat treatments associated with fabrication.
Chemical Composition, %
| Ni | Mo | Fe | C | Co | Cr | Mn | Si | Ti | W | Al | Cu |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
65.0 min |
28.5 |
1.5 |
.01 max |
3.0 max |
1.5 |
3.0 max |
.10 max |
.2 max |
3.0 max |
.50 max |
.20 max |
Hastelloy B3 Physical Properties
| Density | Melting range |
|---|---|
| 9.22 g/cm³ | 1370-1418°C |
B3 Alloy Minimum Mechanical Properties In The Room Temperature
| Ultimate Tensile Strength | Yield Strength (0.2% offset) | Elongation |
|---|---|---|
| 125 Ksi(860 MPa) | 60 Ksi (420 MPa) | 50% |
Characteristics of Nickel Hastelloy B3
- Maintains excellent ductility during transient exposures to intermediate temperatures
- Excellent resistance to pitting, corrosion and stress-corrosion cracking
- Excellent resistance to knife-line and heat-affected zone attack
- Excellent resistance to acetic, formic and phosphoric acids and other non-oxidizing media
- Resistance to hydrochloric acid at all concentrations and temperatures
- Thermal stability superior to alloy B-2
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