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Epoxy vs. SBR Rubber

Epoxy belongs to the thermoset plastics classification, while SBR rubber belongs to the thermoset elastomers (rubber). There are 11 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is epoxy and the bottom bar is SBR rubber.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 4.5
530
Tensile Strength: Ultimate (UTS), MPa 67
14

Thermal Properties

Glass Transition Temperature, °C 120
-30
Maximum Temperature: Mechanical, °C 130
100
Specific Heat Capacity, J/kg-K 1500
1880
Thermal Conductivity, W/m-K 0.2
0.17

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.1
Limiting Oxygen Index (LOI), % 20
18

Common Calculations

Strength to Weight: Axial, points 14
3.4
Strength to Weight: Bending, points 28
11
Thermal Diffusivity, mm2/s 0.1
0.082