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    4. FEP Films
    5. FEP-WF Welding Film

    FEP-WF Welding Film

    CHEMFILM FEP-WF Welding Film
    FEP Type WF, mechanical welding grade film, is an ideal economical solution for applications that don't require high aesthetic standards, such as hot melt adhesive (welding tape) application. FEP WF film possesses all physical, mechanical, and thermal properties of FEP FG grade, while offering up to 25% savings.

     

     

    Datasheet

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    • Features and Benefits
    • Typical Properties
    • Applications
    • Related Documents
    Features Benefits
    Functional temperature range from -254°C (-425°F) to 205°C (400°F) Suitable for extreme indoor and outdoor sealing and welding use
    Super dielectric properties Excellent electrical insulation properties
    Chemically inert Exceptional chemical resistance in aggressive environments
    UV Stable Long term performance in outdoor applications
    Available with pigment For easy identification
    Available with C-Treatment Provides cementable surface on one or both sides of the film
    Typical Properties Test Method Value Units
    General
    Specific Gravity ASTM D-792 2.12-2.17  
    Yield (1 mil)   18(90) m2/kg (ft2/lb)
    Water Absorption, 24 hr.   <0.01 %
    Mechanical
    Tensile Strength @ Break (RT) ASTM D-882 24(3500) MPa (psi)
    Elongation @ Break (RT) ASTM D-882 300 %
    Tensile Modulus (RT) ASTM D-882 480(70000) MPa (psi)
    Initial Tear Strength, 1mil ASTM D-1004 2.2-2.7(0.5-0.6)) N(lbf)
    Initial Tear Strength, 2mil ASTM D-1004 4.9-5.3(1.1-1.2) N(lbf)
    Propagation Tear Strength, 1 mil ASTM D-1004 1.4-1.5(.32-.33) N(lbf)
    Propagation Tear Strength, 2 mil ASTM D-1922 2.4-2.7 (0.55-0.60) N(lbf)
    Fold Endurance (M.I.T) ASTM D-2176 10000 cycles
    Electrical
    Dielectric Strength, 1 mil ASTM D-149 240(6000) kV/mm (V/mil)
    Dielectric Constant, 1 kHz ASTM D-150 2.1  
    Dissipation Factor, 1 kHz ASTM D-150 0.0003  
    Thermal
    Melt Point ASTM D-3418 252-282(485-540) C (F)
    Continuous Service Temperature   205 (400) C (F)
    Specific Heat   1172(.28) J/(kg· oK) (BTU/(lb·oF))
    Coefficient of Thermal Conductivity ASTM D-2863 0.195(1.35) W/(m· oK) BTU·in/(hr·ft2·oF)
    Coefficient of Linear Thermal Expansion ASTM D-696 9.9x10-5(5.5x10-5) Mm/(mm·°C) (in/(in·°F))
    Flammability UL-94 V-0  
    Limiting Oxygen Index ASTM D-2863 95 %
     

     

    Process Belting and CastingProcess Belting and Casting
    Welding FilmWelding Film

     

    • CHEMFILM FEP datasheet
    • CHEMFILM FEP safety datasheet
    • CHEMFILM Brochure

    About Saint-Gobain

    Saint-Gobain designs, manufactures and distributes materials and solutions which are key ingredients in the wellbeing of each of us and the future of all. They can be found everywhere in our living places and our daily life: in buildings, transportation, infrastructure and in so many industrial applications.

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