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    Boron Carbide - Hot-pressed ( B4C )

    Material Information

    Buy Boron Carbide - Hot-pressed on-line

    We stock and supply the following standard forms:
    Rod Sheet Sputtering Target
    Rod Sheet Sputtering Target

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    General Description:  

    After Diamond, Cubic Boron Nitride and Boron Oxide, Hot pressed Boron Carbide has the highest hardness known. Its main applications make use of its excellent wear resistance and high strength. It has a low density but a high elastic modulus and high compressive strength, which leads to its use as a ballistic material. 20% of natural boron is the €0B isotope, giving Boron Carbide a high neutron capture cross section. It is therefore used in neutron-absorbing applications, such as shielding. Boron carbide has good resistance to acids but not to alkali hydroxide melts.

       

    Chemical Resistance

    Acids - concentrated Fair
    Acids - dilute Good
    Alkalis Fair
    Halogens Fair
    Metals Fair

    Electrical Properties

    Volume resistivity @25C ( Ohmcm ) 0.1-10

    Mechanical Properties

    Compressive strength ( MPa ) 1400-3400
    Hardness - Knoop ( kgf mm-2 ) 2800-3500
    Hardness - Vickers ( kgf mm-2 ) 3200
    Tensile modulus ( GPa ) 440-470

    Physical Properties

    Apparent porosity ( % ) <3
    Density ( g cm-3 ) 2.45-2.52

    Thermal Properties

    Coefficient of thermal expansion @20-1000C ( x10-6 K-1 ) 5.6
    Melting point ( C ) 2450
    Specific heat @25C ( J K-1 kg-1 ) 950
    Thermal conductivity @20C ( W m-1 K-1 ) 30-90
    Upper continuous use temperature ( C ) 600-800

    Buy Boron Carbide - Hot-pressed on-line

    We stock and supply the following standard forms:
    Rod Sheet Sputtering Target
    Rod Sheet Sputtering Target

    Choose a form to search our on-line catalogue  

    Index