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PTFE vs. PBT

Both PTFE and PBT are thermoplastics. There are 10 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is PTFE and the bottom bar is PBT.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.1 to 2.3
1.3 to 1.5
Elongation at Break, % 75 to 300
2.5 to 43
Flexural Modulus, GPa 0.4 to 1.3
2.6 to 9.1
Flexural Strength, MPa 13 to 50
79 to 210
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 66 to 70
4.0
Limiting Oxygen Index (LOI), % 90
20
Melting Onset (Solidus), °C 330 to 340
230
Strength to Weight: Axial, points 1.7 to 3.2
12 to 25
Strength to Weight: Bending, points 5.7 to 8.7
25 to 38
Tensile Strength: Ultimate (UTS), MPa 13 to 25
58 to 140