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PFA vs. UPVC

Both PFA and uPVC are thermoplastics. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 300
58
Flexural Modulus, GPa 0.7
3.5
Tensile Strength: Ultimate (UTS), MPa 30
47

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 50
69
Heat Deflection Temperature At 455 kPa (66 psi), °C 75
90
Maximum Temperature: Mechanical, °C 260
95
Melting Onset (Solidus), °C 300
180
Specific Heat Capacity, J/kg-K 1000
880
Thermal Conductivity, W/m-K 0.25
0.16
Thermal Expansion, µm/m-K 120
61

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 2.1
3.4
Dielectric Strength (Breakdown Potential), kV/mm 22
19
Electrical Resistivity Order of Magnitude, 10x Ω-m 16
15

Otherwise Unclassified Properties

Density, g/cm3 2.2
1.4
Limiting Oxygen Index (LOI), % 80
42
Water Absorption After 24 Hours, % 0
0.24

Common Calculations

Strength to Weight: Axial, points 3.9
9.1
Strength to Weight: Bending, points 10
20
Thermal Diffusivity, mm2/s 0.12
0.13