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Formula: FEP
Form: Rod
Material: Fluorinated ethylene propylene (FEP)
CAS Number: 25067-11-2
Commodity: Polymers
FEP Copolymer Rods are offered within our extensive range of polymer rods. Made from a fluoropolymer material, they come in 30 variations and provide properties like high chemical resistance, low friction and exceptional electrical insulation. These rod are used in chemical processing equipment linings, as well as wire and cable insulation in extreme environments. Their unique properties make FEP Copolymer Rods suitable for applications demanding durability against chemical corrosion along with electrical resistivity.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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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

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