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Cork vs. PMP

Cork belongs to the wood-based materials classification, while PMP belongs to the thermoplastics. There are 14 material properties with values for both materials. Properties with values for just one material (9, 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 cork and the bottom bar is PMP.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.020
1.1
Elongation at Break, % 15
30
Tensile Strength: Ultimate (UTS), MPa 0.85
24

Thermal Properties

Specific Heat Capacity, J/kg-K 2000
1750
Thermal Conductivity, W/m-K 0.040
0.17
Thermal Expansion, µm/m-K 200
120

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 1.5
28

Otherwise Unclassified Properties

Density, g/cm3 0.15
0.83

Common Calculations

Stiffness to Weight: Axial, points 0.074
0.74
Stiffness to Weight: Bending, points 60
41
Strength to Weight: Axial, points 1.6
8.0
Strength to Weight: Bending, points 13
22
Thermal Diffusivity, mm2/s 0.13
0.12
Thermal Shock Resistance, points 16
13