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Aluminium Oxide, Al2O3 is the most widely applied and cost effective technical ceramic material. It offers a combination of superior mechanical strength and electrical properties, wear resistance and corrosion resistance. The maximum working temperature is up to 1700 °C with relatively high thermal conductivity. It is also an electrically insulating material with a high electrical resistivity. The good corrosion resistance makes it insoluble in water and slightly soluble in strong acid and alkaline solution.
UNIPRETEC manufactures and provides alumina ceramic components for a wide range of application like Mechanical Equipment, Electronic & Electrical, Oil Drilling, Medical, Chemical Industry etc. According to actual application and customer's requirement, the purities vary from 95%-99.7% and the forming methods will be different. The forming methods applied in our plant include dry pressing, isostatic pressing, injection moulding, extrusion moulding. With experienced engineers and talented workers, we are confident to offer high quality, high precision, complex components for customers worldwide. |
Unit |
95% Al2O3 |
99% Al2O3 |
ZrO2 |
GP-Si3N4 |
|
Color |
- |
white |
ivory |
white |
gray |
Density |
g/cm³ |
3.65 |
3.88 |
5.95 |
3.22 |
Water Absorption |
% |
0 |
0 |
0 |
0 |
Young's Modulus |
Gpa |
280 |
350 |
205 |
295 |
Vickers Hardness |
Gpa |
14 |
20 |
12 |
18-20 |
Flexural Strength ( at R.T. ) |
Mpa |
280 |
300 |
900 |
650 |
Compressive Strength ( at R.T. ) |
Mpa |
2000 |
2500 |
2200 |
2200 |
Thermal Conductivity ( at R.T. ) |
W/(m.K) |
18-25 |
30 |
2.2 |
25 |
Thermal Shock Resistance |
ΔT(°C) |
220 |
180-200 |
280-350 |
450-650 |
Max. Working Temperature ( at R.T. ) |
°C |
1500 |
1700 |
850 |
1200 |
Volume Resistivity ( at R.T. ) |
Ω.cm |
>10^15 |
>10^14 |
>10^12 |
>10^14 |
Dielectric Constant (1 MHz at R.T. ) |
- |
9.50 |
9.80 |
26 |
8.20 |
Dielectric Strength |
kV/mm |
16 |
22 |
- |
16 |
- Wire and thread guides |
- Ballistic Armor |
- Mechanical seals |
- Wear resistant linings |
- Seal faces |
- Semiconductor parts |
- Valve seats |
- Laser cavities |
- Machine components |
- Shot blast nozzles |
- High temperature electrical insulators |
- Knife Sharpeners |
- High voltage insulators |
- Precision shafts & axles in high wear environments |
- Electronic components & substrates |
- Roller & Ball Bearings |
|
As a professional company in advanced ceramic industries, UNIPRETEC is manufacturing and supplying high quality and high precision ceramic components for clients from worldwide. Our ceramic products are widely used in various fields of automotive, metallurgy, machinery, electronic & electrical, food, chemical, medical and so on. With experienced engineers and talented workers, we are able to evaluate projects and drawings properly, make valuable suggestion, supply satisfying products. Our materials including:
- Aluminium Oxide ( 95% 96% 99% 99.5% 99.7% Al2O3 )
Aiming at building long term cooperation relationship with our clients, we set our motto as "Quality First". Far now, our products have been exported to North Amirica, East Europe, West Europe, East Asia, Southeast Asia and get good reputation from our client. |
--- Boron Nitride Ceramic Parts --- --- Ceramic Grinding Media --- --- ZrO2 Zirconia Ceramic Parts ---
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