Silicon Nitride vs. High-silica Glass
Silicon nitride belongs to the non-oxide engineering ceramics classification, while high-silica glass belongs to the glass and glass-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 silicon nitride and the bottom bar is high-silica glass.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.2 to 3.4 | |
| 2.4 |
| Dielectric Strength (Breakdown Potential), kV/mm | 18 | |
| 34 |
| Elastic (Young's, Tensile) Modulus, GPa | 140 to 310 | |
| 78 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 11 to 12 | |
| 12 |
| Flexural Strength, MPa | 130 to 810 | |
| 34 |
| Stiffness to Weight: Axial, points | 34 to 53 | |
| 19 |
| Stiffness to Weight: Bending, points | 65 to 78 | |
| 61 |
| Thermal Expansion, µm/m-K | 2.5 to 3.2 | |
| 0.6 to 0.75 |