High-silica Glass vs. Silicon Nitride
High-silica glass belongs to the glass and glass-ceramics classification, while silicon nitride belongs to the non-oxide engineering ceramics. There are 8 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is high-silica glass and the bottom bar is silicon nitride.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.4 | |
| 2.2 to 3.4 |
| Dielectric Strength (Breakdown Potential), kV/mm | 34 | |
| 18 |
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 140 to 310 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 12 | |
| 11 to 12 |
| Flexural Strength, MPa | 34 | |
| 130 to 810 |
| Stiffness to Weight: Axial, points | 19 | |
| 34 to 53 |
| Stiffness to Weight: Bending, points | 61 | |
| 65 to 78 |
| Thermal Expansion, µm/m-K | 0.6 to 0.75 | |
| 2.5 to 3.2 |