China 95% Al2O3 Alumina Oxide Ceramic Thermal Ceramic, Find details about China Alumina Ceramic, Alumina Oxide Ceramic from 95% Al2O3 Alumina Oxide Ceramic Thermal Ceramic
Test Item | Unit | Numerical Value | ||
Product Material | ---- | Alumina | Zirconia | |
Component Content | % | >=99% | >=96% | 90% |
Sintering Temp | ºC | 1780~1800 | 1650~1680 | 1550~1600 |
Specific Gravity | G/cm^3 | >=3.6 | >=3.8 | >=6.0 |
Breakdown Voltage Strength | KV/mm | 15 | 15 | 15 |
Bibulous Rate | % | <0.01 | <0.01 | <0.01 |
Anti Pressure | Mpa | 3700 | 2400 | 5000 |
Hardness | Hra | >=88 | >=82 | >=85 |
Volume Resistance | Cm | >1012 | >1012 | >1012 |
Bending Resistance | Mpa | 400 | 320 | 700 |
Thermal Expansion Coefficient | ---- | 6.8~8 | 6.2~8.5 | 6.9~10 |
Dielectric Constant | MHz | 9.8 | 8.5 | 10 |
Roughness | Ra | <=0.8 | <=0.8 | <=0.8 |
Mirror Polished | ---- | <=0.05 | <=0.1 | <=0.05 |
Thermal Conductivity | W/m-k | 25 | 20 | 25 |
Temprature Resistance | ºC | 1700 | 1600 | 1800 |
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