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Ferrite vs. PTFE

Ferrite and PTFE belong to fundamentally different material chemistries. Ferrite is a ceramic material, while PTFE is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 10 material properties with values for both materials. Properties with values for just one material (16, 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 ferrite and the bottom bar is PTFE.

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa 430 to 2000
6.9 to 24
Density, g/cm3 4.7 to 4.8
2.1 to 2.3
Dielectric Constant (Relative Permittivity) At 1 MHz 12 to 270
2.1 to 2.4
Electrical Resistivity Order of Magnitude, 10x Ω-m 1.0 to 1.5
2.0 to 18
Flexural Strength, MPa 120 to 150
13 to 50
Strength to Weight: Axial, points 2.8 to 4.1
1.7 to 3.2
Strength to Weight: Bending, points 6.2 to 8.0
5.7 to 8.7
Tensile Strength: Ultimate (UTS), MPa 48 to 71
13 to 25
Thermal Conductivity, W/m-K 3.9 to 6.3
0.24 to 0.65
Thermal Expansion, µm/m-K 8.0 to 9.3
110 to 120