Silicone Plastic vs. LDPE
Silicone plastic belongs to the thermoset plastics classification, while LDPE belongs to the thermoplastics. There are 14 material properties with values for both materials. Properties with values for just one material (7, 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 silicone plastic and the bottom bar is LDPE.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 9.0 | |
| 0.3 |
| Tensile Strength: Ultimate (UTS), MPa | 38 | |
| 7.0 |
Thermal Properties
| Glass Transition Temperature, °C | 200 | |
| -130 |
| Maximum Temperature: Decomposition, °C | 480 | |
| 400 |
| Specific Heat Capacity, J/kg-K | 850 | |
| 2300 |
| Thermal Conductivity, W/m-K | 0.35 | |
| 0.36 |
| Thermal Expansion, µm/m-K | 35 | |
| 220 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.9 | |
| 0.92 |
Common Calculations
| Stiffness to Weight: Axial, points | 2.6 | |
| 0.18 |
| Stiffness to Weight: Bending, points | 36 | |
| 24 |
| Strength to Weight: Axial, points | 5.5 | |
| 2.1 |
| Strength to Weight: Bending, points | 13 | |
| 8.8 |
| Thermal Diffusivity, mm2/s | 0.22 | |
| 0.17 |
| Thermal Shock Resistance, points | 8.5 | |
| 7.6 |