PS vs. PP Homopolymer
Both PS and PP homopolymer are thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.
For each property being compared, the top bar is PS and the bottom bar is PP homopolymer.
Metric UnitsUS Customary Units
Mechanical Properties
| Elongation at Break, % | 1.8 to 40 | |
| 3.0 to 80 |
| Flexural Strength, MPa | 62 to 80 | |
| 41 to 100 |
| Impact Strength: Notched Izod, J/m | 19 to 45 | |
| 42 to 95 |
| Tensile Strength: Ultimate (UTS), MPa | 32 to 44 | |
| 36 to 93 |
Thermal Properties
| Glass Transition Temperature, °C | 100 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 70 | |
| 120 |
| Specific Heat Capacity, J/kg-K | 1250 to 1400 | |
| 1230 to 1900 |
| Thermal Expansion, µm/m-K | 80 to 98 | |
| 30 to 90 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.0 | |
| 0.91 to 1.2 |
Common Calculations
| Strength to Weight: Axial, points | 8.5 to 12 | |
| 11 to 21 |
| Strength to Weight: Bending, points | 22 to 26 | |
| 27 to 37 |