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PPE vs. CPVC

Both PPE and CPVC are thermoplastics. There are 21 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.3
2.8
Elongation at Break, % 30
4.0
Flexural Strength, MPa 75
100
Tensile Strength: Ultimate (UTS), MPa 55
50

Thermal Properties

Glass Transition Temperature, °C 85
100
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 120
91
Maximum Temperature: Autoignition, °C 430
640
Maximum Temperature: Mechanical, °C 90
80
Specific Heat Capacity, J/kg-K 1200
780
Thermal Conductivity, W/m-K 0.22
0.31
Thermal Expansion, µm/m-K 90
65

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 19
49
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
13

Otherwise Unclassified Properties

Density, g/cm3 1.1
1.5
Water Absorption After 24 Hours, % 0.23
0.030

Common Calculations

Stiffness to Weight: Axial, points 1.2
1.0
Stiffness to Weight: Bending, points 42
32
Strength to Weight: Axial, points 14
9.4
Strength to Weight: Bending, points 30
20
Thermal Diffusivity, mm2/s 0.17
0.27
Thermal Shock Resistance, points 19
20