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PMMA vs. PFA

Both PMMA and PFA are thermoplastics. There are 15 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 4.0
300
Tensile Strength: Ultimate (UTS), MPa 71
30

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 96
50
Melting Onset (Solidus), °C 180
300
Specific Heat Capacity, J/kg-K 1260
1000
Thermal Conductivity, W/m-K 0.19
0.25
Thermal Expansion, µm/m-K 76
120

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 3.6
2.1
Dielectric Strength (Breakdown Potential), kV/mm 30
22

Otherwise Unclassified Properties

Density, g/cm3 1.2
2.2
Limiting Oxygen Index (LOI), % 17
80
Refractive Index 1.5
1.4

Common Calculations

Strength to Weight: Axial, points 17
3.9
Strength to Weight: Bending, points 32
10
Thermal Diffusivity, mm2/s 0.13
0.12