Comparison
Weather-Resistant Ethylene Propylene Diene Monomer vs PEEK
A side-by-side comparison of Ethylene Propylene Diene Monomer (Weather-Resistant) and Polyether Ether Ketone.
Physical
Density
0.86 - 0.93 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.1 - 0.4 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
1.0 - 2.0 %
1.1 – 1.4 %
Mechanical
Young's Modulus
0.01 - 0.04 GPa
3.6 GPa
Tensile Strength
5 - 20 MPa
100 MPa
Elongation at Break
300 - 700 %
50 %
Impact Strength (Izod)
N/A
55 J/m
Flexural Strength
—
170 MPa
Thermal
Glass Transition Temperature
-50 to -60 °C
143 °C
Melting Point
N/A
343 °C
Continuous Service Temperature
-50 to 150 °C
260 °C
Heat Deflection Temperature
N/A
160 °C
Electrical
Dielectric Constant
2.3 - 3.0
3.2
Volume Resistivity
10^13 - 10^15 Ohm-cm
10¹⁶ Ω·cm
Dielectric Strength
20 - 30 kV/mm
—
Chemical resistance
Acids
Good
Excellent
Bases
Good
Excellent
Solvents
Good resistance to polar solvents, water, steam; Poor resistance to hydrocarbons
Excellent
UV Resistance
Excellent
Fair
Hydrolysis (steam)
—
Excellent
Sustainability
Recyclability
Limited
Recyclable (specialty)
Recycling Code
N/A
7
Carbon Footprint
Moderate
~30 kg CO₂e / kg