Customize High Temperature Alumina Ceramic Refractory Substrate Plate
Performance for Alumina Substrate :
Item | Unit | 95 Al 2 O 3 | 99 Al 2 O 3 |
Heat Resistance | ºC | 1500 | 1800 |
Bulk Density | g/cm 3 | 3.6 | 3.8 |
Water Absorption | % | 0 | 0 |
Flexural Strength | Mpa | 320 | 360 |
Hardness Vickers | Gpa | 12.2 | 15.6 |
Elastic Modulus | Gpa | 280 | 370 |
Poisson's Ratio | - | 0.22 | 0.23 |
Linear Expansion Coefficient | (20-5000 ºC ) 10 -6 / ºC | 7.1 | 8 |
Thermal Conductivity | W/(M.K) | 16 | 32 |
Specific Heat | ×10 -3 J/(KG . K) | 0.78 | 0.9 |
Dielectric Constant(1MHZ) | - | 9 | 9.9 |
Dielectric Loss Angle | ×10 -4 | 15 | 1 |
Dielectric Strength | ×10 6 V/m | 12 | 15 |