Zirconia has the highest strength and toughness at room temperature of all the advanced ceramic materials. The fine grain size allows for extremely smooth surfaces and sharp edges.
Applications include scissors, knifes, slitters, pump shafts, metal-forming tools, fixtures, tweezers, wire drawing rings, bearing sleeves and valves
Typical Properties
*High temperature capability up to 850oC
*High density
*High strength and fracture toughness
*High hardness and wear resistance(far higher than Stainless steel, Brass, Plastics)
*Low thermal conductivity (20% that of Alumina)
*Good chemical resistance
*Ionic conductivity
| Characteristics | Unit | 95 Al2O3 | 99 Al2O3 | ZrO2 | GPSi3N4 | BN | Glass Ceramic |
| Crystal Structure | - | hexagonal | hexagonal | tetragonal | hexagonal | hexagonal | - |
| Color | - | white | ivory | white | gray | white | white |
| Density | g/cm3 | 3.65 | 3.88 | 5.95 | 3.22 | 2.26 | 2.55 |
| Water Absorption | % | 0 | 0 | 0 | 0 | 0.0-1.0 | 0 |
| Young's Modulus | Gpa | 280 | 350 | 205 | 295 | 670 | 65 |
| Vickers Hardness | Gpa | 14 | 20 | 12 | 18-20 | - | - |
| Flexural Strength @R.T. | Mpa | 280 | 300 | 900 | 650 | 51 | 100 |
| Compressive Strength @R.T. | Mpa | 2000 | 2500 | 2200 | 2200 | 230 | 500 |
| Thermal Conductivity @R.T. | W/(m*k) | 18-25 | 30 | 2.2 | 25 | 20 | 1.7 |
| Thermal shock resistance | Δ(℃) | 220 | 180-200 | 280-350 | 450-650 | >1500 | 25-100 |
| Max. Working Temperature @R.T. | ℃ | 1500 | 1700 | 850 | 1200 | 960 | 800 |
| Volume Resistivity @R.T. | Ω*cm | >10^15 | >10^14 | >10^12 | >10^14 | 10^13 | 10^16 |
| Dielectric Constant (1 MHz @R.T. ) | - | 9.5 | 9.8 | 26 | 8.2 | 4.08 | 6.02 |
| Dielectric Strength | kV/mm | 16 | 22 | - | 16 | 375 | 40 |
Manufacturing Options
Injection molding, Roll compacting, Extruding, Co-firing, Isostatic pressing, Dry pressing, Hot pressing, Tape casting, Slip casting
Advanced Finishing Services
1. Precision grinding and lapping
2. Laser machining
3. Engineering design and support
4. Metallizing
5. Ceramic-to-metal brazing
6. Specialized coatings
7. Threaded components
8. Precision motion components
9. Complex clean room assemblies 
About UniPreTec
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.
Main materials we supply:
- Aluminium Oxide (Al2O3)
- Zirconium Oxide (ZrO2)
- Silicon Nitride (Si3N4)
- Boron Carbide (B4C)
- Hex Boron Nitride (hBN)
- Machinable Glass Ceramic
We offer customized production service,free quotation,free sample, any contact related to advanced ceramic products is welcome. If you need any further information, please do not hesitate to contact us at our office.
