PMMA vs. LDPE
Both PMMA and LDPE are thermoplastics. There are 19 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is PMMA and the bottom bar is LDPE.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.2 | |
| 0.3 |
| Shear Modulus, GPa | 1.7 | |
| 0.21 |
| Tensile Strength: Ultimate (UTS), MPa | 71 | |
| 7.0 |
Thermal Properties
| Glass Transition Temperature, °C | 110 | |
| -130 |
| Maximum Temperature: Autoignition, °C | 320 | |
| 380 |
| Maximum Temperature: Decomposition, °C | 360 | |
| 400 |
| Melting Onset (Solidus), °C | 180 | |
| 110 |
| Specific Heat Capacity, J/kg-K | 1260 | |
| 2300 |
| Thermal Conductivity, W/m-K | 0.19 | |
| 0.36 |
| Thermal Expansion, µm/m-K | 76 | |
| 220 |
| Vicat Softening Temperature, °C | 90 | |
| 50 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 Hz | 3.6 | |
| 2.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.2 | |
| 0.92 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 | |
| 0.18 |
| Stiffness to Weight: Bending, points | 42 | |
| 24 |
| Strength to Weight: Axial, points | 17 | |
| 2.1 |
| Strength to Weight: Bending, points | 32 | |
| 8.8 |
| Thermal Diffusivity, mm2/s | 0.13 | |
| 0.17 |
| Thermal Shock Resistance, points | 21 | |
| 7.6 |