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| Customization: | Available |
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| Application: | Insulators, Electrical Winding Insulation, Electrical Base, Shell, Insulating Varnish, Switch Baseplate |
| Color: | White |
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| Item | The test conditions | Units and symbols | Indicators |
| Bulk density | g/cm 3 | ≥2.85 | |
| Beryllium oxide content | % | ≥99 | |
| Air tightness | Passed | ||
| Fluid permeability | Passed | ||
| Flexural strength | MPa | ≥140 | |
| Thermal shock resistance | Passed | ||
| Linear expansion coefficient | 20ºC-500ºC | ×10 -4 /ºC | 7-8.5 |
| Coefficient of thermal conductivity | 40ºC | W/m·k | ≥250 |
| Distribution constant | 1MHz 20ºC | 6.5-7.5 | |
| 10GHz 20ºC | 6.5-7.5 | ||
| Dielectric loss tangent value | 1MHz 20ºC | ×10 -4 | ≤4 |
| 10GHz 20ºC | ×10 -4 | ≤8 | |
| Volume resistivity | 100ºC | Ω.cm | ≥10 13 |
| 300ºC | Ω.cm | ≥10 10 | |
| Strike strength | DC | KV/mm | ≥15 |
| Chemical stability | 1:9HCl | ug/cm 2 | ≤0.3 |
| 10% NaOH | ug/cm 2 | ≤0.2 |



