HDPE vs. PAR
Both HDPE and PAR are thermoplastics. There are 8 material properties with values for both materials. Properties with values for just one material (21, in this case) are not shown.
For each property being compared, the top bar is HDPE and the bottom bar is PAR.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 1.0 to 1.3 | |
| 1.2 |
| Elongation at Break, % | 2.5 to 100 | |
| 50 |
| Flexural Modulus, GPa | 4.0 to 7.5 | |
| 2.1 |
| Impact Strength: Notched Izod, J/m | 50 to 260 | |
| 220 |
| Specific Heat Capacity, J/kg-K | 1330 to 2400 | |
| 1200 |
| Strength to Weight: Axial, points | 6.9 to 17 | |
| 16 |
| Strength to Weight: Bending, points | 19 to 32 | |
| 31 |
| Tensile Strength: Ultimate (UTS), MPa | 24 to 80 | |
| 67 |