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    SIC

     

    They have the property of excellent resistant-corrosion,high mechanical strength,high thermal conductivity,good self-lubrication,used as seal faces,bearings and tubes in spacecraft,machinery,metallurgy,printing and dyeing,foodstuff,phamaceutical,auto industry and so on.When the sic faces are combined with graphite faces the friction is the smallest and they can be made into mechanical seals which are able to work in highest working requirements.

    SiC physical property

    Technical Parameter

    Unit

    SiC

    SSiC

    Hardness

    HS

    110

    115

    Porosity Rate

    %

    <0.3

    <0.2

    Density

    g/cm3

    3.00~3.05

    >3.10

    Compressive Strength

    MPa

    >2200

    >2500

    Fractural Strength

    MPa

    >350

    >380

    Coefficient of Heat Expansion

    10-6/oC

    4

    4.2

    Content of Sic

    %

    90

    98

    Free Si

    %

    10

    1

    Elastic Modulus

    GPa

    400

    410

    Temperature

    oC

    1300

    1400

     

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