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PHB vs. UPVC

Both PHB and uPVC are thermoplastics. There are 16 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.3
3.7
Elongation at Break, % 7.5
58
Flexural Strength, MPa 20
80
Tensile Strength: Ultimate (UTS), MPa 30
47

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 60
69
Maximum Temperature: Mechanical, °C 120
95
Melting Onset (Solidus), °C 180
180
Vicat Softening Temperature, °C 58
83

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 3.0
3.4
Electrical Resistivity Order of Magnitude, 10x Ω-m 14
15

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.4
Water Absorption After 24 Hours, % 0.75
0.24

Common Calculations

Stiffness to Weight: Axial, points 0.58
1.5
Stiffness to Weight: Bending, points 29
37
Strength to Weight: Axial, points 6.7
9.1
Strength to Weight: Bending, points 17
20