PMP vs. Spruce-pine-fir
PMP belongs to the thermoplastics classification, while spruce-pine-fir belongs to the wood-based materials. There are 14 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is PMP and the bottom bar is spruce-pine-fir.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 1.1 | |
| 16 |
| Elongation at Break, % | 30 | |
| 1.5 |
| Tensile Strength: Ultimate (UTS), MPa | 24 | |
| 85 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 140 | |
| 130 |
| Specific Heat Capacity, J/kg-K | 1750 | |
| 1380 |
| Thermal Conductivity, W/m-K | 0.17 | |
| 0.12 |
| Thermal Expansion, µm/m-K | 120 | |
| 6.5 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 28 | |
| 0.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 0.83 | |
| 0.5 |
Common Calculations
| Stiffness to Weight: Axial, points | 0.74 | |
| 18 |
| Strength to Weight: Axial, points | 8.0 | |
| 47 |
| Strength to Weight: Bending, points | 22 | |
| 86 |
| Thermal Diffusivity, mm2/s | 0.12 | |
| 0.17 |
| Thermal Shock Resistance, points | 13 | |
| 58 |