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| Ceramic Shafts, Bearing |
Picture¡¡1¡¡2
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| Any size is available
on request£¡ |
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Physical character of Creamic products |
| Parameters |
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Al2O3 99% |
Al2O3 96% |
ZrO2 |
| Density |
g/cm3¡Ý |
3.85 |
3.65 |
5.80 |
| Hardness(HRA) |
HRA ¡Ý |
90 |
85 |
82 |
| Fluxural Strength |
MPa¡Ý |
350 |
300 |
1000 |
| Max.use Temperature |
¡æ¡Ý |
1700 |
1500 |
I 100 |
| Coeff. of Thermal exp. |
X 10-6/¡æ |
8.2 |
7.5 |
10.5 |
| Dielectric Constant |
¦År20¡æ, 1MHz |
9.2 |
9.0 |
-- |
| Dielectric Loss |
tan¦Ä* 10-4,1MHz |
2 |
3 |
-- |
| Volume Resistivity |
¦¸ cm20¡æ |
1015 |
1014 |
-- |
| Dielectric Strength |
KV/mm,DC¡Ý |
20 |
20 |
-- |
| Acid Resistance |
mg/cm2¡Ü |
0.7 |
7.0 |
1.0 |
| Alkali Resistance |
mg/cm2¡Ü |
0.1 |
0.2 |
0.1 |
| Wearability |
g/cm2¡Ü |
0.1 |
0.2 |
0.1 |
| Compressive Strength |
MPa¡Ý |
2800 |
2500 |
2100 |
| Tenile Strength |
MPa¡Ý |
240 |
160 |
400 |
| Elastic Modulus(Young) |
GPa |
350 |
300 |
200 |
| Poisson's Ratio |
|
0.22 |
0.20 |
0.31 |
| Thermal Condustivity |
W/m0K(20¡æ ) |
25 |
20 |
2 |
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