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PES vs. Balsa

PES belongs to the thermoplastics classification, while balsa belongs to the wood-based materials. There are 13 material properties with values for both materials. Properties with values for just one material (21, 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 PES and the bottom bar is balsa.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.6
3.0
Elongation at Break, % 65
1.2
Tensile Strength: Ultimate (UTS), MPa 87
14

Thermal Properties

Specific Heat Capacity, J/kg-K 1100
1700
Thermal Conductivity, W/m-K 0.18
0.1
Thermal Expansion, µm/m-K 53
6.5

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 16
4.9

Otherwise Unclassified Properties

Density, g/cm3 1.4
0.13

Common Calculations

Stiffness to Weight: Axial, points 1.1
13
Strength to Weight: Axial, points 18
30
Strength to Weight: Bending, points 32
99
Thermal Diffusivity, mm2/s 0.12
0.45
Thermal Shock Resistance, points 45
51