Borosilicate Glass vs. PHB
Borosilicate glass and PHB belong to fundamentally different material chemistries. Borosilicate glass is a ceramic material, while PHB is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 12 material properties with values for both materials. Properties with values for just one material (20, in this case) are not shown.
For each property being compared, the top bar is borosilicate glass and the bottom bar is PHB.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 67 to 80 | |
| 1.3 |
| Flexural Strength, MPa | 34 to 69 | |
| 20 |
| Tensile Strength: Ultimate (UTS), MPa | 280 | |
| 30 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 360 | |
| 120 |
| Melting Onset (Solidus), °C | 560 | |
| 180 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 Hz | 4.8 to 5.5 | |
| 3.0 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 9.0 to 12 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.2 to 2.6 | |
| 1.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 15 to 17 | |
| 0.58 |
| Stiffness to Weight: Bending, points | 55 to 61 | |
| 29 |
| Strength to Weight: Axial, points | 30 to 35 | |
| 6.7 |
| Strength to Weight: Bending, points | 36 to 43 | |
| 17 |