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PAS vs. PTFE

Both PAS and PTFE are thermoplastics. There are 14 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 PAS and the bottom bar is PTFE.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 40
75 to 300
Flexural Modulus, GPa 2.8
0.4 to 1.3
Flexural Strength, MPa 110
13 to 50
Tensile Strength: Ultimate (UTS), MPa 83
13 to 25

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 200
66 to 70
Thermal Expansion, µm/m-K 49
110 to 120

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 3.5
2.1 to 2.4
Electrical Dissipation At 1 MHz 0.0056
0.00017 to 0.050
Electrical Resistivity Order of Magnitude, 10x Ω-m 15
2.0 to 18

Otherwise Unclassified Properties

Density, g/cm3 1.4
2.1 to 2.3
Limiting Oxygen Index (LOI), % 33
90
Water Absorption After 24 Hours, % 0.4
0.0093 to 0.050

Common Calculations

Strength to Weight: Axial, points 17
1.7 to 3.2
Strength to Weight: Bending, points 31
5.7 to 8.7