Optical Silicon vs. Aluminum Titanate
Optical silicon belongs to the non-glass optical ceramics classification, while aluminum titanate belongs to the oxide-based engineering ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is optical silicon and the bottom bar is aluminum titanate.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.3 | |
| 3.2 |
| Elastic (Young's, Tensile) Modulus, GPa | 150 | |
| 13 |
| Flexural Strength, MPa | 300 | |
| 29 |
| Fracture Toughness, MPa-m1/2 | 3.5 | |
| 1.0 |
| Maximum Temperature: Mechanical, °C | 1350 | |
| 1250 |
| Stiffness to Weight: Axial, points | 35 | |
| 2.2 |
| Stiffness to Weight: Bending, points | 75 | |
| 24 |
| Thermal Conductivity, W/m-K | 150 | |
| 1.6 |
| Thermal Expansion, µm/m-K | 3.0 | |
| 2.9 |