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Physical & Electrical Characteristics |
Unit |
STEATITE L-3 （white） |
STEATITE L-5 （cream） |
absorbility |
% |
0 to 0.05 |
Nil |
density |
g/cm3 |
2.48 |
2.68 |
hardness |
Mohs' |
7.5 |
7.5 |
liner thermal expansion |
/oC (40o to 250o) |
8.6 x 10-6 |
9.5 x 10-6 |
work temperature |
oC |
980 |
930 |
flexual strength |
MPa |
58 |
62 |
compressure strength |
MPa |
550 |
550 |
fracture strength (5” distance) |
MPa |
125 |
145 |
thermal conductivity |
g.cal x cm.thk cm2 x sec x oC |
0.006 |
0.006 |
dielectric strength (6.35mm thick) |
Volts/mil |
220 |
275 |
dielectric constant 1.0 MHz (wet) |
-- -- |
5.8 |
6.1 |
|
power factor 1.0 MHz(wet) |
-- -- |
0.004 |
0.0009 |