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30 GF PTFE vs. PBI

30 GF PTFE belongs to the thermoplastics classification, while PBI belongs to the thermoset plastics. There are 16 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is 30 GF PTFE and the bottom bar is PBI.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 6.9
350
Elongation at Break, % 270
3.0
Flexural Modulus, GPa 1.3
6.5
Flexural Strength, MPa 13
220
Tensile Strength: Ultimate (UTS), MPa 14
160

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 66
430
Maximum Temperature: Mechanical, °C 260
340
Thermal Conductivity, W/m-K 0.45
0.41
Thermal Expansion, µm/m-K 120
23

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 2.4
3.8
Electrical Resistivity Order of Magnitude, 10x Ω-m 15
13

Otherwise Unclassified Properties

Density, g/cm3 2.3
1.3
Limiting Oxygen Index (LOI), % 90
58
Water Absorption After 24 Hours, % 0.020
0.4

Common Calculations

Strength to Weight: Axial, points 1.7
34
Strength to Weight: Bending, points 5.7
50