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PES vs. CR Rubber

PES belongs to the thermoplastics classification, while CR rubber belongs to the thermoset elastomers (rubber). There are 13 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is PES and the bottom bar is CR rubber.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 65
380
Tensile Strength: Ultimate (UTS), MPa 87
11

Thermal Properties

Glass Transition Temperature, °C 220
-45
Maximum Temperature: Autoignition, °C 500
410
Maximum Temperature: Decomposition, °C 540
350
Maximum Temperature: Mechanical, °C 200
130
Specific Heat Capacity, J/kg-K 1100
1120
Thermal Conductivity, W/m-K 0.18
0.19

Otherwise Unclassified Properties

Density, g/cm3 1.4
1.5
Limiting Oxygen Index (LOI), % 36
26

Common Calculations

Strength to Weight: Axial, points 18
1.9
Strength to Weight: Bending, points 32
7.1
Thermal Diffusivity, mm2/s 0.12
0.11