Material | Unit | 95% Al2O3 | 99% Al2O3 | 99.5% Al2O3 | 99.8% Al2O3 |
Purity | % | 95 | 99 | 99.5 | 99.8 |
Color | --- | White/Pink | Ivory | Ivory | Ivory |
Density | g/cm3 | 3.65 | 3.85 | 3.90 | 3.92 |
Water Absorption | % | 0 | 0 | 0 | 0 |
Moh's Hardness | --- | 9 | 9 | 9 | 9 |
HV Hardness | --- | >1300 | 1700 | 1750 | 1800 |
Flexural Strength @25℃ | Mpa | 300 | 330 | 375 | 390 |
Fracture Toughness | Mpa.M1/2 | 3~4 | 3~4 | 4 | 4 |
Compressive Strength (25℃) | Mpa | 2200 | 2350 | 2450 | 2500 |
Thermal Conductivity @25℃ | W/M.K | 18-22 | 27 | 29 | 32 |
Thermal Expansion Coefficient (25-1000℃) |
10-6mm/℃ | 8 | 8 | 8 | 8 |
Thermal Shock Resistance | △T(℃) | 220 | 180-200 | 180-200 | 180-200 |
Max. Working Temperature | ℃ | 1500 | 1700 | 1750 | 1750 |
Dielectric Strength | Kv/Mm | 16 | 20 | 22 | 22 |
Electrical Resistivity (@25℃) | Ω.Cm | 1014 | 1014 | 1014 | 1014 |
Dielectric Constant (@1MHz, 25℃) |
--- | 9 | 9.7 | 9.7 | 9.8 |
Dielectric Loss (Tan Delta) (@1MHz, 25℃) |
--- | 0.0004 | 0.0002 | 0.0001 | 0.0001 |