High-purity
Big Caliber Alumina Ceramic Tube
Top One Product
It is widely used in some
special parts which require high strength,high
hardness,heat-resistance,corrosion resistant and wear-resistant.
(1)
Big caliber ceramic tube made of 92% alumina is widely used in industry of
minning,power,metallurgical,coal,chemical and so on.it works as lining in pipe
for transport of powder material and corrosive material, such as sand,ash, slag
and chemical.
In some special site where wear plates can not service well,
ceramic tube is a perfect substitute. It is a solution to problem of partial
wear plate dropping off and has been enjoying high reputation.
(2) Big caliber ceramic tube made of 95% alumina is used as lining of hydraulic cyclone for paper-making and mineral separation.And most ofthe textile ceramic components are made of alumina 95%.
(3) Most of the ceramic spools,structural ceramic components and ceramics for military application are made of alumina 99%.The future is bright and the consumption quantity is increasing year by year.
Table1:Technical Parameter Of Alumina Ceramics | |||||
Item | Test condition | Unit&Symbol | 95% | 99% | 99.7% |
The
Main | Al2O3 | Al2O3 | Al2O3 | ||
Bulk Density | g/cm³ | >3.6 | 3.89 | 3.96 | |
Maximum Use Temperature | ºC | 1450 | 1600 | 1650 | |
Water Absorption | % | 0 | 0 | 0 | |
ROHS Hardness | ≥85 | ≥ 89 | ≥89 | ||
Flexural Strength | 20 ºC | Mpa(psi*10³) | 358(52) | 550 | 550 |
Compressive Strength | 20 ºC | Mpa(psi*10³) | 2068(300) | 2600(377) | 2600(377) |
Fracture Toughness | K(lc) | Mpa m 1/2 | 4-5 | 5.6 | 6 |
Coefficient Of Thermal Expansion | 25-1000 ºC | 1*10 -6 /ºC | 7.6 | 7.9 | 8.2 |
Coefficient Of Thermal Conductivity | 20 ºC | W/mk | 16 | 30.0 | 30.4 |
Thermal Shock Resistance | ΔTc | ºC | 250 | 200 | 200 |
Dielectricity Constant | 1MHz.25 ºC | 9 | 9.7 | 9.7 | |
Dielectricity Strength | ac-kV/mm(ac V/mil) | 8.3(210) | 8.7(220) | 8.7(220) | |
Volumn Resistivity | 100 ºC | ohm-cm | >10 13 | >10 14 | >10 14 |
