PET vs. PETG
Both PET and PETG are thermoplastics. There are 13 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 PET and the bottom bar is PETG.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.5 to 11 | |
| 2.2 |
| Flexural Modulus, GPa | 8.3 to 14 | |
| 2.1 |
| Impact Strength: Notched Izod, J/m | 43 to 85 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 60 to 140 | |
| 53 |
Thermal Properties
| Glass Transition Temperature, °C | 70 | |
| 81 |
| Melting Onset (Solidus), °C | 260 | |
| 140 |
| Specific Heat Capacity, J/kg-K | 1000 to 1150 | |
| 1200 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 Hz | 3.7 | |
| 2.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.4 to 1.6 | |
| 1.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.2 to 4.4 | |
| 1.0 |
| Stiffness to Weight: Bending, points | 32 to 54 | |
| 34 |
| Strength to Weight: Axial, points | 12 to 27 | |
| 12 |
| Strength to Weight: Bending, points | 25 to 41 | |
| 25 |