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Custom Un-knit / Velvet Surface, Alkali Resist 95% - 96% Industrial Alumina Ceramic Tube
Product description
Custom Un-knit / Velvet Surface, Alkali Resist 95% - 96% Industrial Alumina Ceramic Tube
Description:
1. 95%-96% alumina ceramic tubes according to customers' requirement
2. High quality and competitive price
3. Solid resist
4. Alkali resist
5. High intension
6. Un-knit and velvet surface
7. Good airproof capability
Applications:
Mechanical,electronics,chemical,textile,aeronautic and other fields.
Specifications:
95%,99%,99.7% Al2O3 Material Parameters:
|
Item |
Test Condition |
Unit Symbol |
95%Alumina ceramics |
99%Alumina ceramics |
99.7%Alumina ceramics |
|
The main chemical ingredient |
|
|
Al2O3 |
Al2O3 |
Al2O3 |
|
Bulk Density |
|
g/cm3 |
3.6 |
3.89 |
3.96 |
|
Maximum Use Temperature |
|
|
1450℃ |
1600℃ |
1650℃ |
|
Water absorption |
|
% |
0 |
0 |
0 |
|
ROHS Hardness |
|
|
≥85 |
≥89 |
≥89 |
|
Flexural strength |
20° C |
MPa (psi x 103) |
358 (52) |
550 |
550 |
|
Compressive Strength |
20° C |
MPa (psi x 103) |
2068 (300) |
2600(377) |
2600(377) |
|
Fracture Toughness |
K(I c) |
Mpa m1/2 |
4-5 |
5.6 |
6 |
|
Coefficient of thermal expansion |
25-1000° C |
1X 10-6/°C |
7.6 |
7.9 |
8.2 |
|
Coefficient of thermal conductivity |
20° C |
W/m °K |
16 |
30.0 |
30.4 |
|
Thermal Shock Resistance |
Tc |
°C |
250 |
200 |
200 |
|
Dielectricity constant |
1MHz.25℃ |
|
9 |
9.7 |
9.7 |
|
Dielectric strength |
|
ac-kV/mm (ac V/mil) |
8.3 (210) |
8.7 (220) |
8.7 (220) |
|
Volume Resistivity |
100℃ |
ohm-cm |
> 1013 |
> 1014 |
> 1014 |
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