FEP Copolymer Rod

FEP Copolymer Rod, produced from poly(tetrafluoroethylene-co-hexafluoropropylene), integrates the outstanding chemical resistance, high thermal stability, and low surface energy of PTFE with the improved melt processability imparted by hexafluoropropylene segments. This results in a tough, machinable, and electrically stable rod form that retains low dielectric constant, minimal dielectric loss, and negligible moisture absorption over a broad temperature range. The material’s resistance to virtually all chemicals makes it indispensable in industries such as semiconductor manufacturing, chemical processing, and aerospace. Specific technologies that benefit from FEP Copolymer Rod include high-purity fluid handling components, precision dielectric parts for RF and microwave systems, and chemically inert structural supports in corrosive plant environments. In research, FEP rods are widely used in developing high-performance insulation systems, chemically resistant prototypes, and thermal stability testing of fluoropolymers. Its blend of durability, electrical stability, and ease of fabrication ensures a prominent role in advancing both industrial and scientific innovation.

Quick Links:

Tolerance

Properties

Reference & Citations

each

Tolerances

Rod

Diameter		+20% / -10%

Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Good
Acids - dilute	Good
Alcohols	Good
Alkalis	Good
Aromatic hydrocarbons	Good
Greases and Oils	Good
Halogenated Hydrocarbons	Good
Halogens	Good
Ketones	Good

Mechanical Properties

Element	Value
Coefficient of friction	0.27-0.67
Hardness - Rockwell	R25-45, 60 Shore D
Poisson's ratio	0.48
Elongation at break( % )	150-300
Tensile modulus( GPa )	0.5-0.6
Izod impact strength( J m⁻¹ )	999999No Break
Tensile strength( MPa )	14-30

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.1
Dissipation factor @ 1MHz	0.0007
Dielectric strength( kV mm⁻¹ )	20@3.2mm
Surface resistivity( Ohm/sq )	10¹⁶
Volume resistivity( Ohmcm )	10¹⁸

Physical Properties

Element	Value
Flammability	V0
Radiation resistance	Poor
Refractive index	1.344
Resistance to Ultra-violet	Excellent
Limiting oxygen index( % )	95
Water absorption( % )	0.01
Density( gcm⁻³ )	2.15

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	50
Heat-deflection temperature - 1.8MPa( C )	70
Lower working temperature( C )	-250
Upper working temperature( C )	150-200
Specific heat( J K⁻¹ kg⁻¹ )	1100
Thermal conductivity( W m⁻¹ K⁻¹ )	0.19-0.24@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	83-104