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PHB vs. PP Copolymer

Both PHB and PP copolymer are thermoplastics. There are 13 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is PHB and the bottom bar is PP copolymer.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.3
0.9 to 1.1
Elongation at Break, % 7.5
12
Flexural Strength, MPa 20
31
Tensile Strength: Ultimate (UTS), MPa 30
23 to 33

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 60
50 to 100
Maximum Temperature: Mechanical, °C 120
80
Melting Onset (Solidus), °C 180
150

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 3.0
2.2 to 2.3

Otherwise Unclassified Properties

Density, g/cm3 1.3
0.9

Common Calculations

Stiffness to Weight: Axial, points 0.58
0.56 to 0.68
Stiffness to Weight: Bending, points 29
36 to 38
Strength to Weight: Axial, points 6.7
7.1 to 10
Strength to Weight: Bending, points 17
20 to 25