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Balsa vs. ECO Rubber

Balsa belongs to the wood-based materials classification, while ECO rubber belongs to the thermoset elastomers (rubber). There are 11 material properties with values for both materials. Properties with values for just one material (7, 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 ECO rubber.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 7.0
21
Elastic (Young's, Tensile) Modulus, GPa 3.0
0.0075
Elongation at Break, % 1.2
440
Poisson's Ratio 0.38
0.49
Shear Modulus, GPa 0.23
2.5
Tensile Strength: Ultimate (UTS), MPa 14
16

Thermal Properties

Thermal Expansion, µm/m-K 6.5
650

Otherwise Unclassified Properties

Density, g/cm3 0.13
1.5

Common Calculations

Stiffness to Weight: Axial, points 13
0.0029
Strength to Weight: Axial, points 30
3.0
Strength to Weight: Bending, points 99
9.5