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Rohs / Iso9001 Approved 95% Aluminum Oxide / Alumina Ceramic Semi-circle Brick
Product description
ROHS / ISO9001 Approved Aluminum Oxide / Alumina Ceramic Semi-Circle Brick
Description:
1.This type of ceramic products is green and environment-friendly. It has no environment-harmful materials.
2. Material: 95% AL2O3
3. Method of molding: Thermal casting/dry press/extrusion
4. Color:white
5. Sintering temperature: 1750℃
6. Surface finish: Ra0.4&simRa0.8&mum
7. Packing: Pack with carton and ship with wooden case
8. Produce products according to molds or drawings provided by the client and quote according the data
of the products
9. The mould fee of the non-standard products: According the quotation of product.
Applications:
Our products can be used in 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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