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PTFE (Polytetrafluoroethylene) coating uses a two-coat (primer/topcoat) system. These products have the highest operating temperature of any fluoropolymer and have extremely low coefficient of friction, fair abrasion resistance and good chemical resistance.
PTFE Coating Statistics
• Tensile Strength (ASTM D1708) : 3000-5000 psi
• Elongation (ASTM D1457) : 300-500%
• Impact Strength (ASTM D256) : 3.5 ft-LB/in
• Hardness (ASTM D2240) : 50-65 HB (shore D)
• Abrasion Resistance (Tabor) : 12 mg
• Coefficient of Friction (ASTM D1894) : 0.12 – 0.15 static ; 0.05 – 0.10 dynamic
• Dielectric Strength (ASTM D149) : 450 volts per mil
• Use Temperature : 600°F max
• Melting Point : 625°F
• Thermal Conductivity : 1.7 BTU-in/h-ft 2-°F
• Chemical Resistance (ASTM D543) : Excellent
• Salt Spray Resistance (ASTM B117) : Fair
• Water Absorption (ASTM D570) : < 0.01% • Thickness : 0.001" - 0.003"
Features
• Non-stick and release
• Non-wetting
• Good abrasion and chemical resistance
• Excellent cryogenic stability
• Anti-galling
• High dielectric strength
PTFE coatings can be used on carbon steel, aluminium, stainless steel, steel alloys, brass and magnesium as well as non-metallics such as glass, glass and carbon fibre, some rubber and plastics. Correct surface preparation is essential to ensuring optimum performance, which we provide as part of our service.
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