Hastelloy B-3* Specification
*Trade name of
Haynes International
- W.NR 2.4600
- UNS N10675
- AWS 051
Applicable Standards:
- ASTM B335
- ASTM B619
- NACE MR0175 / ISO 15156-3
This Nickel-Molybdenum alloy gives excellent resistance to hydrochloric acid at all concentrations and temperatures from ambient to high. It also withstands sulphuric, acetic, formic and phosphoric acids and other non oxidizing media. B-3 also has excellent resistance to pitting corrosion and to stress-corrosion cracking. Hastelloy B-3 is not recommended in the presence of ferric or cupric salts.
| Good Mechanical Properties at Elevated Temperatures | No |
| Corrosion Resistant at Ambient Temperatures | Yes |
| Corrosion Resistant & Good Mechanical Properties at Elevated Temperatures | No |
| Oxidation Resistant | No |
| Precipitation Hardenable | No |
Applications include:
- Chemical processing
| Approximate Chemical Composition | |
| Ni | 65% min |
| Mo | 28.5% |
| Cr | 1.5% |
| Fe | 1.5% |
| Co | 3% max |
| W | 3% max |
| Mn | 3% max |
| Properties | ||
| DENSITY | 9.22 g/cm3 | 0.333 lb/in3 |
| MELTING POINT | 1418oC | 2585oF |
| COEFFICIENT OF EXPANSION | 10.6 µm/m °C (20 - 100°C) |
5.7 x 10-6 in/in
°F (70 - 212°F) |
| MODULUS OF RIGIDITY | 83 kN/mm2 | 12038 ksi |
| MODULUS OF ELASTICITY | 216 kN/mm2 | 31329 ksi |
| CONDITION OF SUPPLY | HEAT TREATMENT (AFTER FORMING) |
| Annealed/Spring Temper | Stress relieve at 400 - 450oC (750 - 840oF) for 2 hours and air cool. |
| CONDITION | APPROX TENSILE STRENGTH | APPROX SERVICE TEMPERATURE | ||
| Annealed | 1000 - 1200 N/mm2 | 145 - 174 ksi | -200 to +400oC | -330 to +750oF |
| Spring Temper | 1600 - 2000 N/mm2 | 232 - 290 ksi | -200 to +400oC | -330 to +750oF |
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