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Structure Parts of Alumina(Al2O3)
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  • Key Features


       Higher Mechanical Strength

       Higher Dielectric Strength


    Applications


       Support Insulators for Electronic Instrument, Meter and Automobile

       Tubes

       Plates

       Various Parts

  • Structure Parts of Alumina (Al2O3)


    Technical Parameters
    		 Unit Value

    Alumina Content

    		%

    MS-1

    Steatite

    A-75

    75

    A-95

    95

    Bulk Density

    		g/cm3 2.7 3.2 3.6

    Bending Strength

    		Mpa > 140 > 200 > 280

    Dielectric Constant

    at 1MHz 20℃
    		  7.5 9 9~10
    at 1MHz 500℃
    		--- --- 9~10
    at 10GHz 20℃
    		--- --- 9~10

    Dielectric Loss

    Angle

    at 1MHz 20℃
    		×10-4 8 10 4
    at 1MHz 500℃
    		--- --- 30~40
    at 10GHz 20℃
    		--- --- 10

    Thermal Expansion

    Coefficient

    at 20℃ ~ 100℃
    		×10-6/℃ 8 6 ---
    at 20℃ ~ 500℃
    		--- --- 6.5~7.5
    at 20℃ ~ 800℃
    		--- --- 6.5~8
    Volume Resistiity
    at 100℃
    		 Ωcm > 1012 > 1012 > 1013
    at 300℃
    		 --- --- > 1010
    at 500℃
    		 --- --- > 108

    Dielectric Strength (at D.C)

    		kV/mm > 20 > 20 > 18
  • Structure Parts of Alumina(Al2O3)
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    Structure Parts of Alumina Spec Sheet 177 KB