Ethylene Propylene Diene Rubber (EPDM, EPT)
EPDM rubber is a thermoset elastomer or rubber material. It has a fairly low density and the highest heat capacity among rubber materials. The graph bars on the material properties cards below compare EPDM rubber to other rubber materials (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Thermal Properties
Glass Transition Temperature
-60 °C -76 °F
Maximum Temperature: Decomposition
290 °C 550 °F
Maximum Temperature: Mechanical
160 °C 330 °F
Specific Heat Capacity
2000 J/kg-K 0.48 BTU/lb-°F
Thermal Conductivity
0.2 W/m-K 0.12 BTU/h-ft-°F
Other Material Properties
Density
1.0 g/cm3 63 lb/ft3
Elongation at Break
400 %
Tensile Strength: Ultimate (UTS)
13 MPa 1.9 x 103 psi
Common Calculations
Strength to Weight: Axial
3.6 points
Strength to Weight: Bending
12 points
Thermal Diffusivity
0.1 mm2/s
Followup Questions
Further Reading
Rubber Formulary, The, Peter A. Ciullo and Norman Hewitt, 1999