Tetrafluoroethylene-Perfluoro(alkoxy Vinyl Ether) - Copolymer PFA - Teflon PFA - Supplier Data by Goodfellow

Tetrafluoroethylene-Perfluoro (alkoxy Vinyl Ether), Copolymer PFA, also known as Teflon PFA  has properties similar to polytetrafluoroethylene (PTFE). It differs from the PTFE resins in that it is melt-processable using conventional injection molding and screw extrusion techniques.

Key Properties

The key properties of Teflon PFA are tabulated below.

Table 1. Key properties

Chemical Resistance
Acids - concentrated Excellent
Acids - dilute Excellent
Alcohols Excellent
Alkalis Excellent
Aromatic hydrocarbons Excellent
Greases and Oils Excellent
Halogens Excellent
Ketones Excellent
Electrical Properties
Dielectric constant @ 1 MHz 2.05-2.06
Dielectric constant @ 1 kHz 2.05-2.06
Dissipation factor @ 1 MHz 0.0008
Dissipation factor @ 1 kHz 0.0001-0.0002
Mechanical Properties
Elongation at break ( % ) 300
Tensile strength ( MPa ) 25
Physical Properties
Density ( g.cm-3 ) 2.15
Flammability V0
Limiting oxygen index ( % ) >95%
Refractive index 1.35
Water absorption ( % ) <0.03
Thermal Properties
Coefficient of thermal expansion ( x10-6 K-1 ) 76-78
Thermal conductivity ( W m-1 K-1 ) 0.19
Upper working temperature ( C ) 260

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