| Item | Test Conditions | Specification | Unit | |
| B-97 | B-99 | |||
| Dielectric Constant | 1MHz | 6.9士0.4 | 6.9士0.4 | |
| (10士0.5)GHz | ||||
| Dielectric Loss Tangent | 1MHz | ≤4X 10-4 | ≤4X 10-4 | |
| (10士0.5)GHz | ≤8X 10-4 | ≤8X 10-4 | ||
| Volume Resistivity | 25℃ | ≥1014 | ≥1014 | Ω.cm |
| 300℃ | ≥10" | ≥10" | ||
| Breakdown Strength | D C | ≥15 | ≥20 | kV/mm |
| CMOR | - | ≥170 | ≥190 | MPa |
| Average Linear Expansion Coefficient | 25℃~500℃ | (7.0~8.5)*10-4 | (7.0~8.5)*10-4 | I/K |
| Thermal Conductivity | 25℃ | ≥200 | ≥240 | W/m.K |
| 100℃ | ≥160 | ≥190 | ||
| Thermal Shock Resistance | 0℃-800℃ | There should be no cracks | ||
| Bulk Density | ≥2.85 | ≥2.85 | g/ cm3 | |
| Chemical Stability | 1:9HCL | ≤0.3 | ≤0.3 | Mg/cm2 |
| 10% NaOH | ≤0.2 | ≤0.2 | ||
| Air Tightness | - | ≤10*10-11 | ≤10*10-11 | Pa. m3/s |
| Average Grain Size | - | 12~30 | 12~30 | μm |
