Spruce-pine-fir vs. PMP
Spruce-pine-fir belongs to the wood-based materials classification, while PMP belongs to the thermoplastics. 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 spruce-pine-fir and the bottom bar is PMP.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 16 | |
1.1 |
Elongation at Break, % | 1.5 | |
30 |
Tensile Strength: Ultimate (UTS), MPa | 85 | |
24 |
Thermal Properties
Maximum Temperature: Mechanical, °C | 130 | |
140 |
Specific Heat Capacity, J/kg-K | 1380 | |
1750 |
Thermal Conductivity, W/m-K | 0.12 | |
0.17 |
Thermal Expansion, µm/m-K | 6.5 | |
120 |
Electrical Properties
Dielectric Strength (Breakdown Potential), kV/mm | 0.5 | |
28 |
Otherwise Unclassified Properties
Density, g/cm3 | 0.5 | |
0.83 |
Common Calculations
Stiffness to Weight: Axial, points | 18 | |
0.74 |
Strength to Weight: Axial, points | 47 | |
8.0 |
Strength to Weight: Bending, points | 86 | |
22 |
Thermal Diffusivity, mm2/s | 0.17 | |
0.12 |
Thermal Shock Resistance, points | 58 | |
13 |