Fine Precision Polishing Al2o3 Industrial Alumina Ceramic Discs
USD $0.3 - $1 /Piece
Min.Order:100 Pieces
Shenzhen Apple Vista Technology Ltd.
Fine Precision Polishing Al2o3 Industrial Alumina Ceramic Discs
Aluminum Oxide, Al2O3 and ZrO2 are 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.
| 95% Al2O3 | 99% Al2O3 | ZrO2 |
Color | - | white | ivory |
Density | g/cm³ | 3.65 | 3.88 |
Water Absorption | % | 0 | 0 |
Young's Modulus | Gpa | 280 | 350 |
Vickers Hardness | Gpa | 14 | 20 |
Flexural Strength (at R.T.) | Mpa | 280 | 300 |
Compressive Strength (at R.T.) | Mpa | 2000 | 2500 |
Thermal Conductivity (at R.T.) | W/(m.K) | 18-25 | 30 |
Thermal Shock Resistance | ΔT(°C) | 220 | 180-200 |
Max. Working Temperature (at R.T.) | °C | 1500 | 1700 |
Volume Resistivity (at R.T.) | Ω.cm | >10^15 | >10^14 |
Dielectric Constant (1 MHz at R.T.) | - | 9.50 | 9.80 |
Dielectric Strength | kV/mm | 16 | 22 |
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 |