PHB vs. PEI
Both PHB and PEI are thermoplastics. There are 13 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 PHB and the bottom bar is PEI.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 1.3 | |
| 3.4 to 5.6 |
| Elongation at Break, % | 7.5 | |
| 3.0 to 34 |
| Flexural Strength, MPa | 20 | |
| 140 to 210 |
| Tensile Strength: Ultimate (UTS), MPa | 30 | |
| 110 to 160 |
Thermal Properties
| Heat Deflection Temperature At 1.82 MPa (264 psi), °C | 60 | |
| 200 to 210 |
| Maximum Temperature: Mechanical, °C | 120 | |
| 170 |
Electrical Properties
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 14 | |
| 14 to 15 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 | |
| 1.3 to 1.5 |
| Water Absorption After 24 Hours, % | 0.75 | |
| 0.17 to 0.25 |
Common Calculations
| Stiffness to Weight: Axial, points | 0.58 | |
| 1.5 to 2.1 |
| Stiffness to Weight: Bending, points | 29 | |
| 39 |
| Strength to Weight: Axial, points | 6.7 | |
| 24 to 30 |
| Strength to Weight: Bending, points | 17 | |
| 40 to 44 |