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| Unlike traditional ceramics that tend to be hard and brittle, Zirconia has high strength, wear resistance, and flexibility far beyond those of most other technical ceramics. Zirconia is a very strong technical ceramic with excellent properties in hardness and corrosion resistance, all without the typical property of ceramics – brittleness. Its unique resistance to crack propagation and high thermal expansion make it an excellent material for joining ceramics with metals like steel. Due to Zirconia’s properties it is sometimes referred to as the "Ceramic steel". |
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 forming/drawing dies |
- Kiln furniture crucible |
- Insulating rings in thermal processes |
- Fiber optic ferrules and sleeves |
- Precision shafts & axles in high wear environments |
- Knives and blades |
- Furnace process tubes |
- Bearings & rollers |
- Wear resistance pads |
- Ceramic guiders |
- Thermocouple protection tubes |
- Medical and surgical component |
- Sandblasting nozzles |
- Mechanical seals |
- Extrusion dies |
- Pumps, pistons, and liners Pumps, pistons, and liners |
- Bushings and caps |
- Welding nozzles & pins |
|
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. |
--- ZrO2 Ceramic Cutting Blades --- --- Ceramic Grinding Media --- --- Al2O3 Alumina Ceramic Parts ---
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