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CR Rubber vs. PCTFE

CR rubber belongs to the thermoset elastomers (rubber) classification, while PCTFE belongs to the thermoplastics. There are 13 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 CR rubber and the bottom bar is PCTFE.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 380
150
Tensile Strength: Ultimate (UTS), MPa 11
36

Thermal Properties

Glass Transition Temperature, °C -45
100
Maximum Temperature: Autoignition, °C 410
580
Maximum Temperature: Decomposition, °C 350
370
Maximum Temperature: Mechanical, °C 130
150
Specific Heat Capacity, J/kg-K 1120
920
Thermal Conductivity, W/m-K 0.19
0.21

Otherwise Unclassified Properties

Density, g/cm3 1.5
2.1
Limiting Oxygen Index (LOI), % 26
80

Common Calculations

Strength to Weight: Axial, points 1.9
4.6
Strength to Weight: Bending, points 7.1
11
Thermal Diffusivity, mm2/s 0.11
0.11