Specifications
Our products used in mining industry featured by high hardness, low wearing loss and excellent corrosion-resistance.
95%,99% alumina content ceramics,mainly used in the production of industrial ceramics,such as textiles and ceramics.99 porcelain is mainly used in the production casing Tancifaxin take over the seat of electronic products such as ceramics plates.
99% Al2O3 chemical analyse result
AL2O3 | 99% |
MgO | 0.8% |
Na2O | <0.15% |
SiO2 | <0.018% |
Y2O3 | <0.02% |
Fe2O3 | <0.02% |
TiO2 | <0.006% |
CaO | <0.005% |
Specifications of 99% Al2O3 ceramic
Items | Test condition | Unit |
|
Average grain size |
| µm | 3 - 5 |
Density |
| g/cm3 | ≥3.85 |
Water absorption |
| % | 0 |
Hardness (Vickers) | HV0.5 |
| ≥1900 |
Flexual strength | Distance between bending points 80mm | MPa | ≥340 |
Compressing strength |
| MPa | 3600 |
Linear thermal expanding coefficient | 20-500°C | 1x106 mm/°C | 6.5 – 7.5 |
20-800°C | 6.5 - 8.0 | ||
Thermal conductivity | 20°C | W/(m.K) | ≥24 |
Dielectric strength |
| KV/mm | ≥12 |
Volume resistivity | 300°C | Ω.cm | ≥1011 |
Dielectric constant | 1MHz |
| 9.3-10.6 |
Dielectric loss | 1MHz |
| 3x10-4 |
Thermal shock resistance | 850°C | times | ≥7 |
