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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