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Cork vs. Type 4 Magnetic Alloy

Cork and Type 4 magnetic alloy belong to fundamentally different material chemistries. Cork is a polymeric material, while Type 4 magnetic alloy 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 (21, 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 Type 4 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.020
190
Elongation at Break, % 15
2.0 to 40
Shear Modulus, GPa 0.010
73
Tensile Strength: Ultimate (UTS), MPa 0.85
620 to 1100

Thermal Properties

Specific Heat Capacity, J/kg-K 2000
440
Thermal Expansion, µm/m-K 200
11

Otherwise Unclassified Properties

Density, g/cm3 0.15
8.8

Common Calculations

Stiffness to Weight: Axial, points 0.074
12
Stiffness to Weight: Bending, points 60
22
Strength to Weight: Axial, points 1.6
19 to 35
Strength to Weight: Bending, points 13
18 to 27
Thermal Shock Resistance, points 16
21 to 37