PP Homopolymer vs. PET
Both PP homopolymer and PET are thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is PP homopolymer and the bottom bar is PET.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 3.0 to 80 | |
| 2.5 to 70 |
| Flexural Modulus, GPa | 1.5 to 7.0 | |
| 8.3 to 14 |
| Impact Strength: Notched Izod, J/m | 42 to 95 | |
| 43 to 85 |
| Tensile Strength: Ultimate (UTS), MPa | 36 to 93 | |
| 60 to 140 |
Thermal Properties
| Glass Transition Temperature, °C | 170 | |
| 70 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 80 |
| Specific Heat Capacity, J/kg-K | 1230 to 1900 | |
| 1000 to 1150 |
Otherwise Unclassified Properties
| Density, g/cm3 | 0.91 to 1.2 | |
| 1.4 to 1.6 |
| Water Absorption At Saturation, % | 0.010 to 0.090 | |
| 0.24 to 0.5 |
Common Calculations
| Strength to Weight: Axial, points | 11 to 21 | |
| 12 to 27 |
| Strength to Weight: Bending, points | 27 to 37 | |
| 25 to 41 |