Alkali-lime-silica Glass vs. Steatite
Alkali-lime-silica glass belongs to the glass and glass-ceramics classification, while steatite belongs to the oxide-based engineering ceramics. There are 11 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 alkali-lime-silica glass and the bottom bar is steatite.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 78 | |
| 68 to 120 |
| Flexural Strength, MPa | 34 to 170 | |
| 32 to 150 |
Thermal Properties
| Thermal Expansion, µm/m-K | 9.0 | |
| 7.0 to 9.0 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 Hz | 7.1 to 7.5 | |
| 6.0 |
| Dielectric Strength (Breakdown Potential), kV/mm | 28 | |
| 7.9 to 16 |
| Electrical Dissipation At 1 Hz | 0.022 to 0.052 | |
| 0.0014 to 0.022 |
| Electrical Dissipation At 1 MHz | 0.0088 to 0.053 | |
| 0.0010 to 0.0060 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 10 | |
| 8.0 to 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.7 | |
| 1.9 to 2.8 |
Common Calculations
| Stiffness to Weight: Axial, points | 16 | |
| 14 to 32 |
| Stiffness to Weight: Bending, points | 53 | |
| 52 to 83 |