Borosilicate Glass vs. High-silica Glass
Both borosilicate glass and high-silica glass are glass and glass-ceramics. There are 11 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 borosilicate glass and the bottom bar is high-silica glass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 67 to 80 | |
| 78 |
| Flexural Strength, MPa | 34 to 69 | |
| 34 |
Thermal Properties
| Thermal Expansion, µm/m-K | 3.3 to 5.1 | |
| 0.6 to 0.75 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 Hz | 4.8 to 5.5 | |
| 3.8 |
| Dielectric Strength (Breakdown Potential), kV/mm | 5.0 to 34 | |
| 34 |
| Electrical Dissipation At 1 Hz | 0.0026 to 0.018 | |
| 0.00044 to 0.00087 |
| Electrical Dissipation At 1 MHz | 0.0017 to 0.0088 | |
| 0.00044 to 0.00088 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 9.0 to 12 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.2 to 2.6 | |
| 2.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 15 to 17 | |
| 19 |
| Stiffness to Weight: Bending, points | 55 to 61 | |
| 61 |