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Here is the typical application scenarios of alumina ceramic substrates.
| Alumina Ceramic Substrate | ||||
| Item | Unit | 96% Al2O3 | 99.6% Al2O3 | |
| Mechanical Properties | ||||
| Color | / | / | White | Ivory |
| Density | Drainage Method | g/cm3 | ≥3.70 | ≥3.95 |
| Light Reflectivity | 400nm/1mm | % | 94 | 83 |
| Flexural Strength | Three Point Bending | MPa | >350 | >500 |
| Fracture Toughness | Indentation Method | MPa·m1/2 | 3.0 | 3.0 |
| Vickers Hardness | Load 4.9N | GPa | 14 | 16 |
| Young's Modulus | Stretching Method | GPa | 340 | 300 |
| Water Absorption | % | 0 | 0 | |
| Camber | / | Length‰ | T≤0.3: ≤5‰, Others: ≤3‰ | ≤3‰ |
| Thermal Properties | ||||
| Max. Service Temperature (Non-loading) | / | ºC | 1200 | 1400 |
| CTE (Coefficient of Thermal Expansion) | 20-800ºC | 1×10-6/ºC | 7.8 | 7.9 |
| Thermal Conductivity | 25ºC | W/m·K | >24 | >29 |
| Thermal Shock Resistance | 800ºC | ≥10 Times | No Crack | No Crack |
| Specific Heat | 25ºC | J/kg·k | 750 | 780 |
| Electrical Properties | ||||
| Dielectric Constant | 25ºC, 1MHz | / | 9.4 | 9.8 |
| Dielectric Loss Angle | 25ºC, 1MHz | ×10-4 | ≤3 | ≤2 |
| Volume Resistivity | 25ºC | Ω·cm | ≥1014 | ≥1014 |
| Dielectric Strength | DC | KV/mm | ≥15 | ≥15 |
Thank you very much for your interest in Jinghui bare ceramic substrates. In order to meet different market requirements, we put our unceasing efforts to promote quality control. Please contact us for further information.
