Soda-lime Glass vs. Silicon Nitride
Soda-lime glass belongs to the glass and glass-ceramics classification, while silicon nitride belongs to the non-oxide engineering ceramics. There are 12 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 soda-lime glass and the bottom bar is silicon nitride.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 70 to 71 | |
| 140 to 310 |
| Poisson's Ratio | 0.23 | |
| 0.24 to 0.27 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 300 | |
| 1000 to 1330 |
| Specific Heat Capacity, J/kg-K | 720 to 800 | |
| 720 to 800 |
| Thermal Conductivity, W/m-K | 1.0 to 1.1 | |
| 12 to 31 |
| Thermal Expansion, µm/m-K | 8.8 to 9.0 | |
| 2.5 to 3.2 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 7.3 to 7.4 | |
| 8.0 to 10 |
| Dielectric Strength (Breakdown Potential), kV/mm | 13 | |
| 18 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.4 | |
| 2.2 to 3.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 16 | |
| 34 to 53 |
| Stiffness to Weight: Bending, points | 56 | |
| 65 to 78 |
| Thermal Diffusivity, mm2/s | 0.51 to 0.6 | |
| 7.5 to 13 |