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PCTFE vs. Silicone Plastic

PCTFE belongs to the thermoplastics classification, while silicone plastic belongs to the thermoset plastics. There are 16 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 PCTFE and the bottom bar is silicone plastic.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.4
9.0
Tensile Strength: Ultimate (UTS), MPa 36
38

Thermal Properties

Glass Transition Temperature, °C 100
200
Maximum Temperature: Decomposition, °C 370
480
Specific Heat Capacity, J/kg-K 920
850
Thermal Conductivity, W/m-K 0.21
0.35
Thermal Expansion, µm/m-K 130
35

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 21
30
Electrical Resistivity Order of Magnitude, 10x Ω-m 16
12

Otherwise Unclassified Properties

Density, g/cm3 2.1
1.9

Common Calculations

Stiffness to Weight: Axial, points 0.37
2.6
Stiffness to Weight: Bending, points 17
36
Strength to Weight: Axial, points 4.6
5.5
Strength to Weight: Bending, points 11
13
Thermal Diffusivity, mm2/s 0.11
0.22
Thermal Shock Resistance, points 14
8.5