99.7% Alumina Ceramic Parts for Textile Machine
Specifications
Our products used in mining industry featured by high hardness, low wearing loss and excellent corrosion-resistance.
Specifications of 99.7% Al2O3
Items |
Test condition |
Unit |
|
Average grain size |
|
µm |
3 - 5 |
Density |
|
g/cm3 |
≥3.9 |
Water absorption |
|
% |
0 |
Hardness (Vickers) |
HV0.5 |
|
≥2000 |
Flexual strength |
Distance between bending points 80mm |
MPa |
≥340 |
Compressing strength |
|
MPa |
3800 |
Linear thermal expanding coefficient |
20-500℃ |
1x10-6 mm/℃ |
6.5 – 7.5 |
20-800℃ |
6.5 - 8.0 |
||
Thermal conductivity |
20℃ |
W/(m.K) |
≥24 |
Dielectric strength |
|
KV/mm |
≥12 |
Volume resistivity |
300℃ |
Ω.cm |
≥1011 |
Dielectric constant |
1MHz |
|
9.3-10.6 |
Dielectric loss |
1MHz |
|
3x10-4 |
Thermal shock resistance |
850℃ |
times |
≥7 |
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