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Spruce-pine-fir vs. PA 6/12

Spruce-pine-fir belongs to the wood-based materials classification, while PA 6/12 belongs to the thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (15, 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 spruce-pine-fir and the bottom bar is PA 6/12.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 16
1.7 to 2.2
Elongation at Break, % 1.5
30 to 120
Tensile Strength: Ultimate (UTS), MPa 85
40 to 58

Thermal Properties

Specific Heat Capacity, J/kg-K 1380
1590
Thermal Conductivity, W/m-K 0.12
0.22

Otherwise Unclassified Properties

Density, g/cm3 0.5
1.1
Limiting Oxygen Index (LOI), % 24
25

Common Calculations

Stiffness to Weight: Axial, points 18
0.89 to 1.2
Strength to Weight: Axial, points 47
10 to 15
Strength to Weight: Bending, points 86
25 to 31
Thermal Diffusivity, mm2/s 0.17
0.13