| Application: | Chemical Processing, Electrical Insulation, High-Temperature Furnaces, Medical Devices, Semiconductor Industry |
|---|---|
| Ceramic Tube & Rod: | Ceramic Tube |
| Length: | Customized |
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|
Item
|
Test Condition
|
Unit&Symbol
|
95% Al2O3
|
99% Al2O3
|
99.7% Al2O3
|
|
The main chemical ingredient
|
|
|
Al2O3
|
Al2O3
|
Al2O3
|
|
Bulk Density
|
|
g/cm3
|
3.6
|
3.89
|
3.96
|
|
Maximum Use Temperature
|
|
|
1450°C
|
1600°C
|
1650°C
|
|
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
|
30.4
|
|
Thermal Shock Resistance
|
Tc
|
°C
|
250
|
200
|
200
|
|
Dielectricity constant
|
1MHz.25°C
|
|
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°C
|
ohm-cm
|
> 1013
|
> 1014
|
> 1014
|
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