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PFA-WF Welding Film
PFA WF (mechanical grade) is an ideal economical solution for applications that don't require high aesthetic standards, such as hot melt adhesive (welding tape) application. PFA WF grade possesses all physical, mechanical, and thermal properties of PFA film while offering up to 25% savings.
| Features | Benefits |
|---|---|
| Fold Endurance > 600,000 Cycles | Outstanding flex life and stress crack resistance |
| Very low surface energy | Outstanding anti-stick release properties |
| Chemically inert and UV stable | Excellent chemical resistivity and weatherability in extreme environments |
| Superior Dielectric Strength | Excellent electrical insulation properties |
| Functional Temperature Range from -254°C (-425°F) to 260 | Suitable for Cryogenic and High temperature applications |
| Available with C-Treatment | Provides Cementable surface on one or both sides of the film |
CHEMFILM®PFA-WF Fluoropolymer Film Typical Properties*
| Typical Properties | Test Method | Value | Units |
|---|---|---|---|
| General | |||
| Specific Gravity | ASTM D-792 | 2.12-2.18 | |
| Yield (1 mil) | 18(90) | m2/kg (ft2/lb) | |
| Water Absorption, 24 hr. | <0.01 | % | |
| Mechanical | |||
| Tensile Strength @ Break (RT) | ASTM D-882 | 21(2250) | MPa (psi) |
| Elongation @ Break (RT) | ASTM D-882 | 300 | % |
| Tensile Modulus (RT) | ASTM D-882 | 480(70000) | MPa (psi) |
| Initial Tear Strength, 2mil | ASTM D-1004 | 4.9-5.3(1.1-1.2) | 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 | >600000 | cycles |
| Electrical | |||
| Dielectric Strength, 1 mil | ASTM D-149 | 185(4700) | kV/mm (V/mil) |
| Dielectric Constant, 1 kHz | ASTM D-150 | 2.1 | |
| Dissipation Factor, 1 kHz | ASTM D-150 | 0.0005 | |
| Thermal | |||
| Melt Point | ASTM D-3418 | 302-310(575-590) | C (F) |
| Continuous Service Temperature | 260 (500) | C (F) | |
| Specific Heat | 1172(.28) | J/(kg· oK) (BTU/(lb·oF)) | |
| Coefficient of Thermal Conductivity | ASTM D-2863 | 0.195(1.35)(1.65) | W/(m· oK) BTU·in/(hr·ft2·oF) |
| Coefficient of Linear Thermal | ASTM D-696 | 9.9x10-5(5.5x10-5) | Mm/(mm·°C) (in/(in·°F)) |
| Expansion | |||
| Flammability | UL-94 | V-0 | |
| Limiting Oxygen Index | ASTM D-2863 | 95 | % |
*Represent typical performance properties and should not be used for specification purposes. Contact your Saint-Gobain Performance Plastics representative for more information
