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Cork vs. 90-platinum 10-iridium

Cork and 90-platinum 10-iridium belong to fundamentally different material chemistries. Cork is a polymeric material, while 90-platinum 10-iridium is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 12 material properties with values for both materials. Properties with values for just one material (7, 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 90-platinum 10-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.020
200
Elongation at Break, % 15
5.5 to 34
Shear Modulus, GPa 0.010
74
Tensile Strength: Ultimate (UTS), MPa 0.85
330 to 550

Thermal Properties

Specific Heat Capacity, J/kg-K 2000
130
Thermal Expansion, µm/m-K 200
8.6

Otherwise Unclassified Properties

Density, g/cm3 0.15
22

Common Calculations

Stiffness to Weight: Axial, points 0.074
5.3
Stiffness to Weight: Bending, points 60
9.1
Strength to Weight: Axial, points 1.6
4.2 to 7.1
Strength to Weight: Bending, points 13
4.9 to 6.9
Thermal Shock Resistance, points 16
13 to 22