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Hastelloy B3 (UNS N10675/W.Nr. 2.4600) is a nickel-molybdenum alloy with excellent resistance to pitting, corrosion and stress corrosion cracking, and better thermal stability than Hastelloy alloy B-2, It is a new material improved on the basis of Hastelloy B2. In addition, this nickel-steel alloy is highly resistant to knife-line and heat-affected zone attacks.
Hastelloy B3 can also withstand non-oxidizing media such as sulfuric acid, acetic acid, formic acid, and phosphoric acid.The distinguishing feature of Hastelloy B3 is that it retains excellent ductility during transient exposure to moderate temperatures. This exposure often occurs during thermal processing associated with manufacturing.
Grade | C≤ | Mn≤ | P≤ | S≤ | Si≤ | Ni≥ | Cr | Mo | Fe | Co≤ | V≤ |
Hastelloy B3 | 0.01 | 3.0 | 0.03 | 0.01 | 0.10 | 65.0 | 1.0-3.0 | 27.0-32.0 | 1.0-3.0 | 3.0 | 0.2 |
Mechanical properties | Tensile, min, ksi[MPa] | Yield, min, ksi[MPa] | Elongation, %(min) |
Hastelloy B3 | 110[760] | 51[350] | 40 |
Sheet, Plate & Strip | Billet, Rod & Bar | Seamless Pipe & Tube | Welded Pipe & Tube | Fittings | Forgings | Coated Electrodes | Bare Welding Rods & Wire |
ASTM B333 | ASTM B335 | ASTM B622 | ASTM B619/B626 | ASTM B366 | ASTM B564 | DIN 2.4696 | DIN 2.4695 |
Hastelloy B3 Typical Physical Properties
Density | Thermal Conductivity | Specific Heat | Melting Range | ||||
lb/in3 | g/cm3 | Btu.in/h.ft2.°F | W/m.°C | Btu/lb.°F | J/kg*°C | °F | °C |
0.333 | 9.22 | 78 | 11.2 | 0.089 | 373 | 2500-2585 | 1370-1418 |
Hastelloy B3 Equivalent Grades
STANDARD | WERKSTOFF NR. | UNS |
Hastelloy B3 | 2.4600 | N10675 |
Hastelloy B3 Application：
Chemical & Pharmaceutical Industries
Vacumm Furnaces
Manufacturing component for reducing environment
Herbicides, Insecticides, Ethylene glycol and Ethyl benzene production units
Machine Components
Acetic acid production
