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Al2O3 Content(%) | 99.7 |
Density (g/cm3) | 3.9 |
Bending Strength (Mpa) | 450 |
The coefficient of thermal expansion(200℃-800℃) | 8 |
Thermal Conductivity(W/(m.R)) | 35 |
Dielectric Strength (kv/mm) | 12 |
Working Temperature(long time use)(℃) | 1750 |
Water Absorption(%) | <0.1-0.2 |
Item | Unit | 95 Al2O3 | 99 Al2O3 |
Heat Resistance | ℃ | 1650 | 1800 |
Bulk Density | g/cm3 | 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℃) 10-6/℃ | 7.1 | 8 |
Thermal Conductivity | W/(M.K) | 16 | 32 |
Specific Heat | ×10-3J/(KG.K) | 0.78 | 0.9 |
Dielectric Constant(1MHZ) | - | 9 | 9.9 |
Dielectric Loss Angle | ×10-4 | 15 | 1 |
Dielectric Strength | ×106V/m | 12 | 15 |
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