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UHMW-PE vs. Silicone Plastic

UHMW-PE 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 (10, 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 UHMW-PE and the bottom bar is silicone plastic.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.8
9.0
Tensile Strength: Ultimate (UTS), MPa 49
38

Thermal Properties

Specific Heat Capacity, J/kg-K 1750
850
Thermal Conductivity, W/m-K 0.41
0.35
Thermal Expansion, µm/m-K 180
35

Otherwise Unclassified Properties

Density, g/cm3 0.94
1.9

Common Calculations

Stiffness to Weight: Axial, points 0.47
2.6
Stiffness to Weight: Bending, points 33
36
Strength to Weight: Axial, points 14
5.5
Strength to Weight: Bending, points 32
13
Thermal Diffusivity, mm2/s 0.25
0.22
Thermal Shock Resistance, points 25
8.5