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EPDM Rubber vs. CR Rubber

Both EPDM rubber and CR rubber are thermoset elastomers (rubber). There are 11 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 400
380
Tensile Strength: Ultimate (UTS), MPa 13
11

Thermal Properties

Glass Transition Temperature, °C -60
-45
Maximum Temperature: Decomposition, °C 290
350
Maximum Temperature: Mechanical, °C 160
130
Specific Heat Capacity, J/kg-K 2000
1120
Thermal Conductivity, W/m-K 0.2
0.19

Otherwise Unclassified Properties

Density, g/cm3 1.0
1.5

Common Calculations

Strength to Weight: Axial, points 3.6
1.9
Strength to Weight: Bending, points 12
7.1
Thermal Diffusivity, mm2/s 0.1
0.11