Optical Silicon vs. Alkali-lime-silica Glass
Optical silicon belongs to the non-glass optical ceramics classification, while alkali-lime-silica glass belongs to the glass and glass-ceramics. There are 6 material properties with values for both materials. Properties with values for just one material (23, in this case) are not shown.
For each property being compared, the top bar is optical silicon and the bottom bar is alkali-lime-silica glass.
Metric UnitsUS Customary Units
Material Properties
Density, g/cm3 | 2.3 | |
2.7 |
Elastic (Young's, Tensile) Modulus, GPa | 150 | |
78 |
Flexural Strength, MPa | 300 | |
34 to 170 |
Stiffness to Weight: Axial, points | 35 | |
16 |
Stiffness to Weight: Bending, points | 75 | |
53 |
Thermal Expansion, µm/m-K | 3.0 | |
9.0 |