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Cork vs. 6018 Aluminum

Cork and 6018 aluminum belong to fundamentally different material chemistries. Cork is a polymeric material, while 6018 aluminum is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 14 material properties with values for both materials. Properties with values for just one material (18, 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 6018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.020
69
Elongation at Break, % 15
9.0 to 9.1
Shear Modulus, GPa 0.010
26
Tensile Strength: Ultimate (UTS), MPa 0.85
290 to 300

Thermal Properties

Specific Heat Capacity, J/kg-K 2000
890
Thermal Conductivity, W/m-K 0.040
170
Thermal Expansion, µm/m-K 200
23

Otherwise Unclassified Properties

Density, g/cm3 0.15
2.9

Common Calculations

Stiffness to Weight: Axial, points 0.074
13
Stiffness to Weight: Bending, points 60
48
Strength to Weight: Axial, points 1.6
28 to 29
Strength to Weight: Bending, points 13
34 to 35
Thermal Diffusivity, mm2/s 0.13
65
Thermal Shock Resistance, points 16
13