Complaint
| Project | Test the condition | Unit | 99 porcelain | 95 porcelain | Talc porcelain | |
| Backbone | 99%AL2O3 | 95%AL2O3 | MgO.SiO2 | |||
| Physical property | Density of volume | Normal atmospheric temperature | g/cm3 | 3.8 | 3.6 | 2.8 |
| Airtight | Normal atmospheric temperature | . | .Pass | Pass | - | |
| Absorbing water rate | Normal atmospheric temperature | % | 0 | 0 | 0 | |
| Temperature that frit | °C | 1800 | 1650 | 1350 | ||
| Mechanical performance | Rockwell hardness | Normal atmospheric temperature | HRA | 88 | 86 | 76 |
| Resist the intensity of turning back | Normal atmospheric temperature | Mpa | 350 | 320 | 150 | |
| Compression strength | Normal atmospheric temperature | Mpa | 1300 | 1200 | 900 | |
| Hot performance | Use temperature at most | °C | 1700 | 1600 | 1200 | |
| Heat resistant shaking | 20O°C-1100O°C | 10Num | Pass | Pass | Pass | |
| Hot coefficient of expansion | 20O°C-80O°C | ×10-6mm/°C | 6.5-8.5 | 6.5-8.0 | 5.0-6.2 | |
| Heat-conduction rate | 25°C | W/m.k | 29 | 25 | 2.9 | |
| 300°C | W/m.k | 18 | 13 | 2 | ||
| Dielectric constant | The medium lossing | 1MHz2O°C | ×10-4 | ≤2.5 | ≤4 | ≤8.0 |
| The angle tangent is worth | 1MHz8O°C | ×10-4 | ≤3.5 | ≤4.2 | - | |
| Dielectric strength | Normal atmospheric temperature | KV/mm | 15 | 16 | 20 | |
| Dielectric constant | 1MHz2O°C | 9-10.5 | 9-10 | ≤7.5 | ||
| Resistivity of volume | 2O°C | Ω.cm | >1012 | >1012 | >1013 | |
| 10O°C | Ω.cm | 1012-1013 | 1012-1013 | 1010-1011 | ||
| 30O°C | Ω.cm | >1012 | 3.1×109 | 5×108 | ||
