Cork vs. PFA

Cork belongs to the wood-based materials classification, while PFA belongs to the thermoplastics. There are 10 material properties with values for both materials. Properties with values for just one material (17, 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 PFA.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		0.15
Density, g/cm³		2.2

Dielectric Strength (Breakdown Potential), kV/mm		1.5
Dielectric Strength (Breakdown Potential), kV/mm		22

Elongation at Break, %		15
Elongation at Break, %		300

Specific Heat Capacity, J/kg-K		2000
Specific Heat Capacity, J/kg-K		1000

Strength to Weight: Axial, points		1.6
Strength to Weight: Axial, points		3.9

Strength to Weight: Bending, points		13
Strength to Weight: Bending, points		10

Tensile Strength: Ultimate (UTS), MPa		0.85
Tensile Strength: Ultimate (UTS), MPa		30

Thermal Conductivity, W/m-K		0.040
Thermal Conductivity, W/m-K		0.25

Thermal Diffusivity, mm²/s		0.13
Thermal Diffusivity, mm²/s		0.12

Thermal Expansion, µm/m-K		200
Thermal Expansion, µm/m-K		120

Cork vs. PFA

Material Properties

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