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Balsa vs. SBR Rubber

Balsa belongs to the wood-based materials classification, while SBR rubber belongs to the thermoset elastomers (rubber). There are 8 material properties with values for both materials. Properties with values for just one material (11, 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 balsa and the bottom bar is SBR rubber.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 0.13
1.1
Elongation at Break, % 1.2
530
Specific Heat Capacity, J/kg-K 1700
1880
Strength to Weight: Axial, points 30
3.4
Strength to Weight: Bending, points 99
11
Tensile Strength: Ultimate (UTS), MPa 14
14
Thermal Conductivity, W/m-K 0.1
0.17
Thermal Diffusivity, mm2/s 0.45
0.082