Diameter 8mm High Alumina Ceramic Tubes With Holes
Specifications
Diameter 8mm high alumina ceramic tubes with holes1.High temperature
2.Good insulation
3.High strength
4.Precision Process
Productive Technology:
Alumina ceramic is the special corundum ceramic that been sintered under 1800 °C with the
main raw material of Al2O3 and flux of rare metal oxide.Using the high strength organic/inorganic
bond to felt together, and then grinding to the size as drawing required.
Advantages:
1.High temperature
2.Good insulation
3.High strength
4.Precision Process
Alumina Ceramics Properties | |||
| Alumina Content | Unit | 95% | 99% |
Density | g/cm3 | 3.6 | 3.8 |
Water absorption | % | <0.4 | <0.2 |
Firing temperature | °C | 1600 | 1800 |
Hardness | HRA | 70 | 80 |
Coefficient of linear expansion | *10-6/°C | 5.5 | 5.3 |
Dielectric constant | 9 | 10.5 | |
Volume resistivity | Ω·cm | — | 1013 |
Breakdown voltage | KV/mm | 14 | 15 |
Breaking strength | Mpa | 250 | 300 |

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