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ALUMINA

PROPERTY  ALUMINA
COMPOSITION
UNIT
DGA-850
DGA-960
DGA-975
DGA-980
DGA-995
AL2O3AL2O3
%
85 96 97.5 98 99.7
TENSILE
Kpsi
18 30 30 30 32
FLEXURAL
Kpsi
45 55 55 55 60
COMPRESSIVE
Kpsi
250 300 300 300 330
DENSITY
g/cc
3.4 3.67 3.72 3.8 3.9
POROSITY
-
0 0 0 0 0
COLOR
-
WHITE
WHITE
WHITE
WHITE
IVORY
HARDNESS
MOHÕS SCALE
9 9 9 9 9
THERMAL CONTDUCT
cal/cm2 cm/sec/c¡
0.042 0.049 0.05 0.052 0.055
C.O.T.E.
In / In¡C (x107)
67 75 76 77 78
MAX WK TEMP
-
1350 1600 1650 1650 1700
DIELECTRIC STRENGTH
D.C. Volts Mil @ 0.100" Thick
190 230 230 240 250
VOLUME RESISTIVITY
Ohm-cm (x1012)
0.02 2 3.1 3.2 3.5
DIELECTRIC CONSTANT
-
7.6 9 9.4 9.6 9.7
DISSIPATION FACTOR
-
0.0006 0.0003 0.0002 0.0001 0.0001
LOSS FACTOR
-
0.006 0.028 0.013 0.011 0.009

 

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