PVC-P vs. Alkali-lime-silica Glass
PVC-P and alkali-lime-silica glass belong to fundamentally different material chemistries. PVC-P is a polymeric material, while alkali-lime-silica glass is ceramic. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 10 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.
For each property being compared, the top bar is PVC-P and the bottom bar is alkali-lime-silica glass.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 1.4 | |
| 2.7 |
| Dielectric Constant (Relative Permittivity) At 1 Hz | 5.8 | |
| 7.1 to 7.5 |
| Dielectric Strength (Breakdown Potential), kV/mm | 20 | |
| 28 |
| Elastic (Young's, Tensile) Modulus, GPa | 1.4 | |
| 78 |
| Electrical Dissipation At 1 Hz | 0.12 | |
| 0.022 to 0.052 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 11 | |
| 10 |
| Glass Transition Temperature, °C | 75 | |
| 530 |
| Stiffness to Weight: Axial, points | 0.57 | |
| 16 |
| Stiffness to Weight: Bending, points | 28 | |
| 53 |
| Thermal Expansion, µm/m-K | 160 | |
| 9.0 |