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Hastelloy B-3

Hastelloy B-3 Part

Overview of Hastelloy B-3

Hastelloy B-3 is a new material improved on the basis of Hastelloy B-2, which enhances the thermal stability of the material, thereby improving its corrosion resistance, and also improves its hot and cold forming performance. In recent years, it has been increasingly applied in the production and manufacturing of chemical equipment.
Hastelloy B-3 is a nickel-molybdenum alloy that has excellent resistance to salt and acid at all concentrations and temperatures.

Hastelloy B-3 Parts

It can also withstand sulfuric acid, acetic acid, formic acid, phosphoric acid and other non-oxidizing media. The B-3 alloy has a special chemical composition, aiming to achieve higher thermal stability than the B-2 alloy and thus be easier to manufacture.
The commonly used standards include ASTM B 333, ASTM B 335, ASTM B 366, ASTM B 4762, ASTM B 619 Calss I or III, ASTM B 622, and ASTM B 626 UNS N10675

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    • Hastelloy B-2 Chemical Composition

    C≤ Si≤ Mn≤ P≤ S≤ Cr≥ Ni≥ Mo≥ Cu≤
    0.01 0.1 3 0.03 0.01 1.00-3.00 65 27.0-32.0 0.2
    Nb≤ Al≤ Ti≤ Fe≤ Co≤ V≤ W≤ Ni+Mo Ta≤
    0.2 0.5 0.2 1.00-3.00 3 0.2 3 94.0-98.0 0.2
    Hastelloy B-3 Physical Properties
    Item Data
    Density/g.cm–3 9.22
    Melting Point/℃ 1371-1420
    Resistivity μ/ω.Cm 137
    21℃Coefficient of thermal expansion/m.(m.℃)-1 10.6 × 10-6
    Thermal conductivity coefficient/W.(m.℃)-1 11.2
    Elastic modulus/GPa 216
    Specific Heat/J.(kg.℃)-1 373
    Hastelloy B-3 Sheet Mechanical Properties
    Temperature,°F Ultimate tensile strength,ksi 0.2% yield strength,ksi Elongation,%
    70 125 60.6 53.4
    200 120.7 55.3 56.9
    400 110 47 59.7
    600 104.4 43.5 63.4
    800 102 42.4 62
    1000 97.8 39 59

    Hastelloy B-3 Principal Characteristics and Applications

    It has excellent corrosion resistance to hydrochloric acid of any temperature and concentration. It also has good corrosion resistance to non-oxidizing media such as sulfuric acid, acetic acid, formic acid and phosphoric acid.

    The B-3 alloy can be applied to all the previous uses of the B-2 alloy.
    It is also used in production of herbicides, insecticides, ethylene glycol and ethylbenzene.
    It has excellent resistance to pitting and stress corrosion cracking. Due to the adjustment of its chemical composition, its thermal stability has been significantly improved compared with the original B-2 alloy.

    Excellent resistance to all kinds of organic acid corrosion.