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Silicone Plastic vs. ETFE

Silicone plastic belongs to the thermoset plastics classification, while ETFE belongs to the thermoplastics. There are 15 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 silicone plastic and the bottom bar is ETFE.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 9.0
1.5
Tensile Strength: Ultimate (UTS), MPa 38
46

Thermal Properties

Maximum Temperature: Decomposition, °C 480
400
Specific Heat Capacity, J/kg-K 850
1000
Thermal Conductivity, W/m-K 0.35
0.24
Thermal Expansion, µm/m-K 35
95

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 30
16
Electrical Resistivity Order of Magnitude, 10x Ω-m 12
15

Otherwise Unclassified Properties

Density, g/cm3 1.9
1.8

Common Calculations

Stiffness to Weight: Axial, points 2.6
0.48
Stiffness to Weight: Bending, points 36
22
Strength to Weight: Axial, points 5.5
7.3
Strength to Weight: Bending, points 13
16
Thermal Diffusivity, mm2/s 0.22
0.14
Thermal Shock Resistance, points 8.5
23