1.structural ceramic 2.high temperature resistant 3.high quality with competitive price
Performance:
1. Big hardness, the ROHS hardness is HRA80-90, just inferior to diamond, the wearable ability is much better than the wearable steel and stainless steel
2. Wearable ability is excellent. Equal to 266 times of manganese steel, 171.5 times of high chrome cast-iron. Under the same working condition, can extend the equipment working life at least above 10 times.
3. Light weight, the bulk density is 3.6g/cm3, only half of steel, can alleviate the equipment burthen greatly.
4. Hard adhesives, good heat-resistant.
95%,99%,99.7% Al2O3 Material Parameters:
Item | Test Condition | Unit Symbol | 95%Alumina ceramics | 99%Alumina ceramics | 99.7%Alumina ceramics |
The main chemical ingredient | Al2O3 | Al2O3 | Al2O3 | ||
Bulk Density | g/cm3 | 3.6 | 3.89 | 3.96 | |
Maximum Use Temperature | 1450°C | 1600°C | 1650°C | ||
Water absorption | % | 0 | 0 | 0 | |
ROHS Hardness | ≥85 | ≥89 | ≥89 | ||
Flexural strength | 20° C | MPa (psi x 103) | 358 (52) | 550 | 550 |
Compressive Strength | 20° C | MPa (psi x 103) | 2068 (300) | 2600(377) | 2600(377) |
Fracture Toughness | K(I c) | Mpa m1/2 | 4-5 | 5.6 | 6 |
Coefficient of thermal expansion | 25-1000° C | 1X 10-6/°C | 7.6 | 7.9 | 8.2 |
Coefficient of thermal conductivity | 20° C | W/m °K | 16 | 30.0 | 30.4 |
Thermal Shock Resistance | Tc | °C | 250 | 200 | 200 |
Dielectricity constant | 1MHz.25°C | 9 | 9.7 | 9.7 | |
Dielectric strength | ac-kV/mm (ac V/mil) | 8.3 (210) | 8.7 (220) | 8.7 (220) | |
Volume Resistivity | 100°C | ohm-cm | > 1013 | > 1014 | > 1014 |
Wear-resistant high purity alumina ceramic
