ECTFE (ethylene-chlorotrifluoro-ethylene) [Halar®]


  • A par­tially flu­o­ri­nated semi-crystalline polymer
  • Can be han­dled by con­ven­tional tech­niques of extru­sion as well as by blow, com­pres­sion, injec­tion, roto and trans­fer molding
  • Smooth sur­face, excel­lent cor­ro­sion and weather resis­tance, and out­stand­ing fire-safe properties
  • Great impact resistance
  • Machin­able, weld­able and thermoformable

Com­mon uses

  • Pipes and pip­ing systems
  • Fit­tings
  • Wire and cable insulation
  • Semi­con­duc­tor applications
  • Pumps and valves
  • Fil­ter housings
  • A coat­ing mate­r­ial in pro­tec­tion and anti-corrosion appli­ca­tions, includ­ing those in con­tact with highly cor­ro­sive or ultra­pure chemicals


Mate­r­ial Specifications

ASTM or UL test Prop­erty Value
D792 Den­sity (g/cm3) 1.56
D570 Water absorp­tion, 24 hrs (%) 0.04–0.4
D638 Ten­sile strength (psi) 8,200
D638 Ten­sile mod­u­lus (psi) 430,000
D638 Ten­sile elon­ga­tion at break (%) 20–40
D790 Flex­ural strength (psi) 15,000
D790 Flex­ural mod­u­lus (psi) 410,000
D785 Hard­ness, Rockwell R121
D256 Izod notched impact (ft-lb/in) 1.6
D696 Coef­fi­cient of lin­ear ther­mal expan­sion (x 10–5 in./in./°F) 3.7
D648 Heat deflec­tion temp (F°/C°) at 264 psi 217/103
D3418 Melt­ing temp (F°) N/A
- Max oper­at­ing temp (F°/C°) 200/93
C177 Ther­mal con­duc­tiv­ity (BTU-in/ft²-hr-°F) 0.95
UL94 Flam­ma­bil­ity rating V-0
D149 Dielec­tric strength (V/mil)
short time, ⅛” thick
D150 Dielec­tric con­stant at 60 Hz 3.7
D150 Dis­si­pa­tion fac­tor at 60 Hz -
D257 Vol­ume resis­tiv­ity (ohm/cm) at 50% RH 3.4 x 1015

These are typ­i­cal val­ues for ref­er­ence and com­par­i­son only. They should not be used as a basis for design spec­i­fi­ca­tions or qual­ity con­trol. Con­tact us for the man­u­fac­tur­ers’ com­plete mate­r­ial prop­erty datasheets. All val­ues were taken at 73°F (23°C) unless oth­er­wise noted.

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