Soda-lime Glass vs. PET
Soda-lime glass and PET belong to fundamentally different material chemistries. Soda-lime glass is a ceramic material, while PET is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 9 material properties with values for both materials. Properties with values for just one material (21, in this case) are not shown.
For each property being compared, the top bar is soda-lime glass and the bottom bar is PET.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.4 | |
| 1.4 to 1.6 |
| Elastic (Young's, Tensile) Modulus, GPa | 70 to 71 | |
| 3.5 to 11 |
| Maximum Temperature: Mechanical, °C | 300 | |
| 80 |
| Specific Heat Capacity, J/kg-K | 720 to 800 | |
| 1000 to 1150 |
| Stiffness to Weight: Axial, points | 16 | |
| 1.2 to 4.4 |
| Stiffness to Weight: Bending, points | 56 | |
| 32 to 54 |
| Strength to Weight: Axial, points | 4.6 to 20 | |
| 12 to 27 |
| Strength to Weight: Bending, points | 11 to 28 | |
| 25 to 41 |
| Tensile Strength: Ultimate (UTS), MPa | 41 to 180 | |
| 60 to 140 |