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CAB vs. Spruce-pine-fir

CAB belongs to the thermoplastics classification, while spruce-pine-fir belongs to the wood-based materials. There are 11 material properties with values for both materials. Properties with values for just one material (19, 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 CAB and the bottom bar is spruce-pine-fir.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 50 to 55
1.5
Tensile Strength: Ultimate (UTS), MPa 20 to 50
85

Thermal Properties

Specific Heat Capacity, J/kg-K 1460
1380
Thermal Conductivity, W/m-K 0.25
0.12
Thermal Expansion, µm/m-K 14
6.5

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 15
0.5

Otherwise Unclassified Properties

Density, g/cm3 1.2
0.5
Limiting Oxygen Index (LOI), % 18
24

Common Calculations

Strength to Weight: Axial, points 4.8 to 12
47
Strength to Weight: Bending, points 14 to 25
86
Thermal Diffusivity, mm2/s 0.14 to 0.15
0.17