HRA 85, 3.6 White / Red Al2O3 95%, Alumina Ceramic Axises / Shafs
Certification:ROHS、SGS
HRA ≥ 85, ρ ≥ 3.6 White / Red Al2O3 ≥ 95%, Alumina Ceramic Axises / Shafs
Our company can supply many kinds of ceramic parts according to the customers\' different requirements. Our products widely used a lots of fields as follow tables.
Including the ceramic plunger ceramic plunger pump, ceramic rod, ceramic shaft, ceramic piston, ceramic water valve sheet, ceramic pipe sleeve, ceramic loom plunger, ceramic seal ring, special shape ceramic, ceramic knife etc
1). Material: ≥95% Al2O3
2). Forming method: hot pressure casting/dry pressing/extrusion
3).Color: white or red
4).Sintering Temperature: 1750°C
5).Material Property: HRA≥85, ρ≥3.6
Applications:
Mechanical,electronics,chemical,textile,aeronautic and other fields.
Specifications:
99.5% Al2O3 Material Parameters:
|
Item |
Test Condition |
Unit&Symbol |
99.5%Alumina ceramics |
|
The main chemical ingredient |
Al2O3 |
||
|
Bulk Density |
g/cm3 |
3.91 |
|
|
Maximum Use Temperature |
1650℃ |
||
|
Water absorption |
% |
0 |
|
|
ROHS Hardness |
≥89 |
||
|
Flexural strength |
20° C |
MPa (psi x 103) |
550 |
|
Compressive Strength |
20° C |
MPa (psi x 103) |
2600(377) |
|
Fracture Toughness |
K(I c) |
Mpa m1/2 |
6 |
|
Coefficient of thermal expansion |
25-1000° C |
1X 10-6/°C |
8.2 |
|
Coefficient of thermal conductivity |
20° C |
W/m °K |
30.4 |
|
Thermal Shock Resistance |
Tc |
°C |
200 |
|
Dielectricity constant |
1MHz.25℃ |
9.7 |
|
|
Dielectric strength |
ac-kV/mm (ac V/mil) |
8.7 (220) |
|
|
Volume Resistivity |
100℃ |
ohm-cm |
> 1014 |
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