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PTFE vs. Grade VDCrV Steel

PTFE and grade VDCrV steel belong to fundamentally different material chemistries. PTFE is a polymeric material, while grade VDCrV steel is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 8 material properties with values for both materials. Properties with values for just one material (28, 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 PTFE and the bottom bar is grade VDCrV steel.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.1 to 2.3
7.8
Maximum Temperature: Mechanical, °C 260 to 270
410
Melting Onset (Solidus), °C 330 to 340
1410
Strength to Weight: Axial, points 1.7 to 3.2
61
Strength to Weight: Bending, points 5.7 to 8.7
41
Tensile Strength: Ultimate (UTS), MPa 13 to 25
1730
Thermal Conductivity, W/m-K 0.24 to 0.65
49
Thermal Expansion, µm/m-K 110 to 120
13