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PHB vs. CPVC

Both PHB and CPVC are thermoplastics. There are 14 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.3
2.8
Elongation at Break, % 7.5
4.0
Flexural Strength, MPa 20
100
Tensile Strength: Ultimate (UTS), MPa 30
50

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 60
91
Maximum Temperature: Mechanical, °C 120
80

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 3.0
3.7
Electrical Resistivity Order of Magnitude, 10x Ω-m 14
13

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.5
Water Absorption After 24 Hours, % 0.75
0.030

Common Calculations

Stiffness to Weight: Axial, points 0.58
1.0
Stiffness to Weight: Bending, points 29
32
Strength to Weight: Axial, points 6.7
9.4
Strength to Weight: Bending, points 17
20