Silicone Plastic vs. PET
Silicone plastic belongs to the thermoset plastics classification, while PET belongs to the thermoplastics. There are 10 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is silicone plastic and the bottom bar is PET.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 1.9 | |
| 1.4 to 1.6 |
| Elastic (Young's, Tensile) Modulus, GPa | 9.0 | |
| 3.5 to 11 |
| Glass Transition Temperature, °C | 200 | |
| 70 |
| Maximum Temperature: Decomposition, °C | 480 | |
| 390 |
| Specific Heat Capacity, J/kg-K | 850 | |
| 1000 to 1150 |
| Stiffness to Weight: Axial, points | 2.6 | |
| 1.2 to 4.4 |
| Stiffness to Weight: Bending, points | 36 | |
| 32 to 54 |
| Strength to Weight: Axial, points | 5.5 | |
| 12 to 27 |
| Strength to Weight: Bending, points | 13 | |
| 25 to 41 |
| Tensile Strength: Ultimate (UTS), MPa | 38 | |
| 60 to 140 |