PVC cables are manufactured at a much lower cost because they don’t have to meet the high temperature rating that PTFE cables do. PVC stands for Polyvinyl Chloride which is a compound engineered to be used in electronics and other indoor applications.
PVC electronic cables meet a 105°C temperature rating in 300 or 600 volts. They’re manufactured with flexible copper strands and PVC insulation on the inner conductors. They sometimes come with an aluminum overall foil shield and a tinned copper drain wire.
Now that you know the construction of a PVC cable you’ll probably understand why a PTFE cable is much more expensive. PTFE compound is used to manufacture a 200°C temperature material to cover the copper conductors. The engineering involved in creating a 200°C cable is much more involved than the process of creating a 105°C cable.
|Property Name||Units||ABS/PVC Alloy||PTFE Filled|
|Specific Heat Capacity||BTU/lb-°F||0.382|
|Compressive Yield Strength||psi||3050||5710|
|Elongation at Break||%||100||9.4|
|Flexural Yield Strength||psi||7030||9820|
|Modulus of Elasticity||ksi||319||348|
|Hardness, Rockwell R||88||110|
|Tensile Strength, Ultimate||psi||4030||6580|
|Tensile Strength, Yield||psi||5420||8270|
|Max Service Temperature, Air||°F||170||212|