PHB vs. PPA
Both PHB and PPA are thermoplastics. There are 12 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is PHB and the bottom bar is PPA.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 1.3 | |
| 2.1 to 2.2 |
| Elongation at Break, % | 7.5 | |
| 30 |
| Flexural Strength, MPa | 20 | |
| 95 to 110 |
| Tensile Strength: Ultimate (UTS), MPa | 30 | |
| 57 to 69 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 60 | |
| 120 |
| Melting Onset (Solidus), °C | 180 | |
| 310 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 | |
| 1.1 |
| Water Absorption After 24 Hours, % | 0.75 | |
| 0.7 |
Common Calculations
| Stiffness to Weight: Axial, points | 0.58 | |
| 1.0 to 1.1 |
| Stiffness to Weight: Bending, points | 29 | |
| 38 |
| Strength to Weight: Axial, points | 6.7 | |
| 14 to 17 |
| Strength to Weight: Bending, points | 17 | |
| 29 to 33 |