Borosilicate Glass vs. PSU
Borosilicate glass and PSU belong to fundamentally different material chemistries. Borosilicate glass is a ceramic material, while PSU is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 8 material properties with values for both materials. Properties with values for just one material (26, in this case) are not shown.
For each property being compared, the top bar is borosilicate glass and the bottom bar is PSU.
Metric UnitsUS Customary Units
Material Properties
| Compressive (Crushing) Strength, MPa | 2000 | |
| 95 to 180 |
| Density, g/cm3 | 2.2 to 2.6 | |
| 1.2 to 1.6 |
| Flexural Strength, MPa | 34 to 69 | |
| 110 to 200 |
| Specific Heat Capacity, J/kg-K | 830 | |
| 910 to 1000 |
| Strength to Weight: Axial, points | 30 to 35 | |
| 16 to 25 |
| Strength to Weight: Bending, points | 36 to 43 | |
| 30 to 40 |
| Tensile Strength: Ultimate (UTS), MPa | 280 | |
| 70 to 140 |
| Thermal Expansion, µm/m-K | 3.3 to 5.1 | |
| 25 to 57 |