Lead-alkali-silica Glass vs. Engineering Porcelain
Lead-alkali-silica glass belongs to the glass and glass-ceramics classification, while engineering porcelain belongs to the oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.
For each property being compared, the top bar is lead-alkali-silica glass and the bottom bar is engineering porcelain.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 3.1 | |
| 2.3 to 3.0 |
| Dielectric Constant (Relative Permittivity) At 1 Hz | 7.0 | |
| 5.0 to 10 |
| Elastic (Young's, Tensile) Modulus, GPa | 67 | |
| 67 to 150 |
| Electrical Dissipation At 1 Hz | 0.0024 | |
| 0.0043 to 0.028 |
| Electrical Dissipation At 1 MHz | 0.0018 | |
| 0.00043 to 0.013 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 12 | |
| 9.0 to 12 |
| Flexural Strength, MPa | 34 | |
| 43 to 160 |
| Stiffness to Weight: Axial, points | 12 | |
| 16 to 29 |
| Stiffness to Weight: Bending, points | 43 | |
| 49 to 65 |
| Thermal Expansion, µm/m-K | 9.0 | |
| 2.0 to 6.6 |