Ads by Google
1. High density
2. High hardness
3. Low thermal conductivity
4. Chemical inertness
5 .Resistance to molten metals
6. Good Wear resistance
7. High fracture toughness
8. Good insulation performance and high temperature resistance
96% 99% alumina ceramic is used in shaft , pump plunger, sealing structure, auto mobile Industrial, oil drilling equipment, Insulation parts in electrical equipment parts, with high density, bending strength and breaking tenacity.
Performance For Alumina Ceramic | ||||
Item | Unit | 96 Al2O3 | 99 Al2O3 | |
Physical Characteristics | Bulk density | g/cm3 | 3.6 | 3.9 |
Water absorption | % | 0 | 0 | |
Mechanical Characteristics | Flexural strength | Mpa | 340 | 360 |
Hardness Vickers | Gpa | 13.5 | 15.6 | |
Elastic modulus | Gpa | 320 | 370 | |
Poisson’s ratio | - | 0.23 | 0.23 | |
Thermal Characteristics | Linear expansion coefficient | (200C-5000C) 10-6/0C | 7.2 | 8 |
Thermal conductivity | w/(m.k) | 24 | 32 | |
Specific Heat | *10-3J/(kg*K) | 0.78 | 0.9 | |
Electrical Characteristics | Dielectric constant (1MHZ) | - | 9.4 | 9.9 |
Dielectric loss angle | *10-4 | 5 | 1 | |
Dielectric strength | *106V/m | 15 | 15 |
Industrial wear resistance mirro surface 99% al2o3 alumina ceramic seal rings