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EVA vs. Silicone Plastic

EVA belongs to the thermoplastics classification, while silicone plastic belongs to the thermoset plastics. There are 12 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is EVA and the bottom bar is silicone plastic.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.015 to 0.080
9.0
Tensile Strength: Ultimate (UTS), MPa 3.0 to 35
38

Thermal Properties

Maximum Temperature: Decomposition, °C 450
480
Specific Heat Capacity, J/kg-K 1400
850
Thermal Conductivity, W/m-K 0.34
0.35

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 21
30

Otherwise Unclassified Properties

Density, g/cm3 0.93 to 1.0
1.9

Common Calculations

Stiffness to Weight: Axial, points 0.0087 to 0.048
2.6
Stiffness to Weight: Bending, points 8.6 to 15
36
Strength to Weight: Axial, points 0.87 to 10
5.5
Strength to Weight: Bending, points 4.8 to 26
13
Thermal Diffusivity, mm2/s 0.25 to 0.26
0.22