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PTFE vs. CPVC

Both PTFE and CPVC are thermoplastics. There are 15 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 PTFE and the bottom bar is CPVC.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 6.9 to 24
70
Elongation at Break, % 75 to 300
4.0
Flexural Modulus, GPa 0.4 to 1.3
2.5
Flexural Strength, MPa 13 to 50
100
Tensile Strength: Ultimate (UTS), MPa 13 to 25
50

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 66 to 70
91
Maximum Temperature: Mechanical, °C 260 to 270
80
Thermal Conductivity, W/m-K 0.24 to 0.65
0.31
Thermal Expansion, µm/m-K 110 to 120
65

Electrical Properties

Electrical Resistivity Order of Magnitude, 10x Ω-m 2.0 to 18
13

Otherwise Unclassified Properties

Density, g/cm3 2.1 to 2.3
1.5
Limiting Oxygen Index (LOI), % 90
57
Water Absorption After 24 Hours, % 0.0093 to 0.050
0.030

Common Calculations

Strength to Weight: Axial, points 1.7 to 3.2
9.4
Strength to Weight: Bending, points 5.7 to 8.7
20