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Cork vs. 7049A Aluminum

Cork and 7049A aluminum belong to fundamentally different material chemistries. Cork is a polymeric material, while 7049A 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 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.020
71
Elongation at Break, % 15
5.0 to 5.7
Shear Modulus, GPa 0.010
27
Tensile Strength: Ultimate (UTS), MPa 0.85
580 to 590

Thermal Properties

Specific Heat Capacity, J/kg-K 2000
850
Thermal Conductivity, W/m-K 0.040
130
Thermal Expansion, µm/m-K 200
24

Otherwise Unclassified Properties

Density, g/cm3 0.15
3.1

Common Calculations

Stiffness to Weight: Axial, points 0.074
13
Stiffness to Weight: Bending, points 60
44
Strength to Weight: Axial, points 1.6
52 to 53
Strength to Weight: Bending, points 13
50 to 51
Thermal Diffusivity, mm2/s 0.13
50
Thermal Shock Resistance, points 16
25