PET vs. DAP
PET belongs to the thermoplastics classification, while DAP belongs to the thermoset plastics. There are 12 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.
For each property being compared, the top bar is PET and the bottom bar is DAP.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.5 to 11 | |
| 13 |
| Elongation at Break, % | 2.5 to 70 | |
| 31 |
| Impact Strength: Notched Izod, J/m | 43 to 85 | |
| 14 |
| Tensile Strength: Ultimate (UTS), MPa | 60 to 140 | |
| 28 |
Thermal Properties
| Glass Transition Temperature, °C | 70 | |
| 150 |
| Specific Heat Capacity, J/kg-K | 1000 to 1150 | |
| 1450 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 Hz | 3.7 | |
| 5.2 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.4 to 1.6 | |
| 1.7 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.2 to 4.4 | |
| 4.1 |
| Stiffness to Weight: Bending, points | 32 to 54 | |
| 46 |
| Strength to Weight: Axial, points | 12 to 27 | |
| 4.5 |
| Strength to Weight: Bending, points | 25 to 41 | |
| 12 |