| 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 |