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Cork vs. SAE-AISI 4320 Steel

Cork and SAE-AISI 4320 steel belong to fundamentally different material chemistries. Cork is a polymeric material, while SAE-AISI 4320 steel 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 (19, 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 SAE-AISI 4320 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.020
190
Elongation at Break, % 15
21 to 29
Shear Modulus, GPa 0.010
73
Tensile Strength: Ultimate (UTS), MPa 0.85
570 to 790

Thermal Properties

Specific Heat Capacity, J/kg-K 2000
470
Thermal Conductivity, W/m-K 0.040
46
Thermal Expansion, µm/m-K 200
11

Otherwise Unclassified Properties

Density, g/cm3 0.15
7.9

Common Calculations

Stiffness to Weight: Axial, points 0.074
13
Stiffness to Weight: Bending, points 60
24
Strength to Weight: Axial, points 1.6
20 to 28
Strength to Weight: Bending, points 13
19 to 24
Thermal Diffusivity, mm2/s 0.13
13
Thermal Shock Resistance, points 16
19 to 27