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99% Al2O3 Ceramic Disc Vavle:
Material:99%Al2O3 ceramics
Colour:Ivory
With the properties of high hardness, high strength, high wear and chemical corrosion resistance, low expansion coefficient, they are advanced in aplication such as:
1) Increase of operation life;
2) Reduction of engine noise;
3) Decrease of fuel consumption and exhaust pollution.
| Name | Unit | Slim | ||
| Material | Al2O3 95%-97% | Al2O3 99% | Al2O3 99.7% | |
| Desity | g/cm3 | 3.7 | 3.85 | 3.9 |
| Flexural Strength | Mpa | 300 | 340 | 390 |
| Compressive Strength | Mpa | 3400 | 3600 | 3900 |
| Modulus of Elaslicity | Gpa | 350 | 380 | 390 |
| Impact Resistance | Mpa m1/2 | 4.0 | 5 | 5.2 |
| Weibull Moudulus | m | 10.0 | 10 | 12 |
| Vickers Hardness | HV0.5 | 1800.0 | 1900 | 2000 |
| Thermal Expansion Coefficent | 10-6K-1 | 5.0-8.3 | 5.4-8.3 | 5.5-8.4 |
| Thermal Conductivity | W/mK | 24 | 27 | 28 |
| Thermal Shork Resistance | T°C | 250 | 270 | 280 |
| Maximum Use Temperature | °C | 1600 | 1650 | 1700 |
| Volume Resistivity at 20°C | Ω | ≥1014 | ≥1014 | ≥1015 |
| Dielectric Constant | KV/mm | 20 | 25 | 30 |
| Open Porosity | % | 0 | 0 | 0 |
| Dielectric Constant | ξr | 10 | 10 | 10 |
| Dielectric Loss Angle | Tanσ | 0.001 | 0.001 | 0.0005 |
99%Al2O3 Ceramic Valve
