Material Property | Units | ALN Direct Sintered High Resistance | ALN Hot Pressed |
---|---|---|---|
Density | gm/cc | > 3.29 | > 3.25 |
Grain Size, average | µm | 4~6 | 2~5 |
Flexural Strength (4-Pt. MOR) | Mpa | 375 | 420 |
Characteristic Strength | Mpa | 400 | 440 |
Weibull Modulus | m | 12 | 12 |
Elastic Modulus | Gpa | 330 | 330 |
Poisson's Ratio | n | 0.23 | 0.23 |
Hardness | Gpa (Kg/mm2) | 1100 | 1150 |
Fracture Toughness | Mpa m1/2 | 2.9 | 2.9 |
Thermal Expansion RT - 1000° C | 1x 10-6/°C | 5.4 | 5.5 |
Thermal Conductivity | W/(m°K) | 180 | 180 |
Dielectric Constant, 1 MHz | @ 25°C | 9 | 8.5 |
Loss Tangent, 1 MHz | @ 25°C | 0.0004 | 0.0001 |