China Al2O3 Hot Sell High Purity Alumina Ceramic Thermal Insulation Substrate, Find details about China Alumina Ceramic, Hot Sell Alumina Ceramic from Al2O3 Hot Sell High Purity Alumina Ceramic Thermal Insulation Substrate
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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