PS vs. PP Copolymer
Both PS and PP copolymer are thermoplastics. There are 12 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.
For each property being compared, the top bar is PS and the bottom bar is PP copolymer.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 1.9 to 2.9 | |
| 0.9 to 1.1 |
| Elongation at Break, % | 1.8 to 40 | |
| 12 |
| Flexural Strength, MPa | 62 to 80 | |
| 31 |
| Impact Strength: Notched Izod, J/m | 19 to 45 | |
| 110 to 350 |
| Tensile Strength: Ultimate (UTS), MPa | 32 to 44 | |
| 23 to 33 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 70 | |
| 80 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 18 to 20 | |
| 21 to 22 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.0 | |
| 0.9 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.0 to 1.5 | |
| 0.56 to 0.68 |
| Stiffness to Weight: Bending, points | 40 to 45 | |
| 36 to 38 |
| Strength to Weight: Axial, points | 8.5 to 12 | |
| 7.1 to 10 |
| Strength to Weight: Bending, points | 22 to 26 | |
| 20 to 25 |