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PLA vs. Silicone Plastic

PLA belongs to the thermoplastics classification, while silicone plastic belongs to the thermoset plastics. There are 11 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 PLA and the bottom bar is silicone plastic.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 3.5
9.0
Tensile Strength: Ultimate (UTS), MPa 50
38

Thermal Properties

Glass Transition Temperature, °C 60
200
Specific Heat Capacity, J/kg-K 1800
850
Thermal Conductivity, W/m-K 0.13
0.35

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.9

Common Calculations

Stiffness to Weight: Axial, points 1.6
2.6
Stiffness to Weight: Bending, points 40
36
Strength to Weight: Axial, points 11
5.5
Strength to Weight: Bending, points 24
13
Thermal Diffusivity, mm2/s 0.058
0.22