| Customization: | Available |
|---|---|
| Material: | Alumina Ceramic |
| Featurte: | High Temperature Resistance |
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| Characteristic | Test condition | Unit | Qualified | Fine | ||
| Color | White dense | White dense | ||||
| Size (mm)) | Any size (max :134*230) | |||||
| Length tolerances | ±0.7% (Min:0.13mm) |
±0.5% (Min:0.1mm) |
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| mm Thickness |
0.38/0.5/0.635/0.8/1.0/1.2 Any thickness between 0.38 to 1.2 |
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| Thickness tolerances | ±7% (Min:0.05mm) |
±5% (Min:0.05mm) |
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| Camber | ≤0.5% | ≤0.3% | ||||
| Grain size | μm | 3~5 | 3~5 | |||
| Surface Roughness | Ra | μm | 0.2~0.5 | 0.2~0.4 | ||
| Density | g/cm3 | ≥3.70 | ≥3.72 | |||
| Physical properties | Flexural strength | Three point | MPa | ≥380 | ≥400 | |
| Hardness | Loaded 4.9 | GPa | ≥14 | ≥15 | ||
| Water absorption | % | 0 | 0 | |||
| Thermal properties |
Thermal conductivity | 25ºC | W(m*k) | ≥22 | ≥24 | |
| thermal expansion | 25-500ºC | 10-6mm/ºC | 6.6~7.5 | 6.6~7.5 | ||
| 25-800ºC | 6.6~7.9 | 6.6~7.9 | ||||
| Thermal shock resistance | 850ºC | time |
≥6 | |||
| Specific heat | J/(kg*K) | 880 | ||||
| Electrical property | Dielectric constant | 1MHz/25ºC | 9.4±0.3 | |||
| Dielectric loss | 1MHz/25ºC | ×10-4 | ≤3 | |||
| Volume resistivity | 25ºC | Ω*cm | >1014 | |||
| 500ºC | >1010 | |||||
| 700ºC | >109 | |||||
| Breakdown voltage | KV/mm | >12 | >12 | |||
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