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PFA vs. CA

Both PFA and CA are thermoplastics. There are 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 300
25 to 30
Flexural Modulus, GPa 0.7
1.7 to 2.1
Tensile Strength: Ultimate (UTS), MPa 30
30 to 37

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 50
65 to 75
Heat Deflection Temperature At 455 kPa (66 psi), °C 75
75 to 85
Specific Heat Capacity, J/kg-K 1000
1500
Thermal Conductivity, W/m-K 0.25
0.25
Thermal Expansion, µm/m-K 120
14

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 2.6
3.6
Dielectric Strength (Breakdown Potential), kV/mm 22
15
Electrical Resistivity Order of Magnitude, 10x Ω-m 16
16

Otherwise Unclassified Properties

Density, g/cm3 2.2
1.3
Limiting Oxygen Index (LOI), % 80
17
Refractive Index 1.4
1.5
Water Absorption After 24 Hours, % 0
2.3

Common Calculations

Strength to Weight: Axial, points 3.9
6.4 to 7.9
Strength to Weight: Bending, points 10
17 to 19
Thermal Diffusivity, mm2/s 0.12
0.13