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CR Rubber vs. Balsa

CR rubber belongs to the thermoset elastomers (rubber) classification, while balsa belongs to the wood-based materials. There are 8 material properties with values for both materials. Properties with values for just one material (13, 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 CR rubber and the bottom bar is balsa.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.5
0.13
Elongation at Break, % 380
1.2
Specific Heat Capacity, J/kg-K 1120
1700
Strength to Weight: Axial, points 1.9
30
Strength to Weight: Bending, points 7.1
99
Tensile Strength: Ultimate (UTS), MPa 11
14
Thermal Conductivity, W/m-K 0.19
0.1
Thermal Diffusivity, mm2/s 0.11
0.45