ADS high-density alumina ceramics is a sintered material with a low moisture absorption rate of 0.01% or less. It has many applications in various industries as various structure parts due to its excellent electric insulation, high strength, and abrasion-resistance, etc. Additionally, thanks to its high resistance to acids, alkali, and halogen plasma, it has applications as parts and jigs in the semiconductor and FPD industries.
| ADS-11 | ADS-12 | ||
|---|---|---|---|
| Alumina content | % | 99.5 | 99.5 |
| Bulk density | g/cm3 | 3.90 | 3.92 |
| Absorption density | % | <0.01 | <0.01 |
| Average crystal diameter |  |
6 | 20 |
| Bending strength | MPa | 350 | s330 |
| Young's modulus | GPa | 360 | 360 |
| Vickers hardness | (HU.5kgf) Gpa | 16.0 | 16.0 |
| Fracture toughness | Mpa·m1/2 | 4.5 | 4.2 |
| Coefficient of thermal expansion | (20-900 )X10-6/K |
7.8 | 7.8 |
| Thermal conductivity | (20) W/mk |
30.0 | 30.0 |
| Thermal Shock resistance | ( T) |
220 | 200 |
| Max. service tenperature | |
1500 | 1600 |
| Electrical conductivity | (20-100) ·cm |
>1016 | >1016 |
| Dielectric constant | (20,10GHz) |
9.9 | 9.9 |
tan  |
(20,10GHz)X10-4 |
10.0 | 10.0 |
