Wire & Cable Technical Resources


Back to TexWire Home Page

Go Back


FEP Detailed Properties

(Fluorinated Ethylene Propylene)

The table below lists a generally accepted summary of properties that we believe to be reliable.   Please note that many of these resins are produced in several varieties and property characteristics may vary.  Therefore, determination of resin is dependent on the application and this table is only meant to serve as a general guideline.    

 

FEP PropertiesASTMUNIT FEP
MECHANICAL PROPERTIES
Specific Gravity D792  2.15
Elongation D638% 250~330
Tensile Strength  D638psi2,800~5,000
Flexural Strength D790 psino break
Compressive StrengthD695  2,200
Tensile Elastic Modulus 
(Young's Modulus) 
D638psi50,000
Flexural Modulus
D790 psi78,000~92,000
D790103MPa(103kgf/cm2) 0.5-0.6 (5.5-6.5)
Flex LifeD2176 (MIT cycles)5,000~80,000
Hardness Durometer D636 Shore D55
Coefficient of Friction  D1984 Static0.05
Abrasion ResistanceTaber 1000 revs.14~20
Impact Strength IZOD
73F/23C
D256notched ft/lbs/in no breakdown
THERMAL PROPERTIES
Melting Point  C
(F)
260
(500)
Upper Service
Temperature(20,000h)
 C
(F)
200
(392)
Flame Rating**  UL94VO
Thermal Conductivity
 BTU/hr/sq ft/deg F in 1.4
C117 cal/sec/cm2,C/cm6x10-4
Heat of Fusion  BTU/LB
 cal/g
11
n.a
Heat of Combustion  BTU/LB
 cal/g
2200
1840
Low Temperature Embrittlement  C
(F)
-268
-450
ELECTRICAL PROPERTIES
Dielectric Constant D150/103Hz 2.1
  D150/106Hz2.1
Dissipation Factor  D150/103Hz n.a
  D150/106Hzn.a
Dielectric Strength  125MILV.
10MILV.
500
>2000
Volume Resistivity   D257 ohm-cm>1018
Surface Resistivity   ohm/sq.>1017
GENERAL PROPERTIES
Chemical/Solvent
Resistance
   Excellent
Water Absorption, 24h  % <0.01
RefractiveIndex   1.338
Arc Resistivity
 % >300
D495sec>300