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DuPont Teflon® PFA Grade 345 Extrusion and Molding Resin

 

Subcategory: Fluoropolymer; Thermoplastic; PFA

Key Words: DuPont Fluoroproducts; DuPont PFA

Material Notes:
Teflon® PFA 345 is a medium-flow-rate resin available in clear 2.5-mm (0.1-in.) pellets. Compared with Teflon® PFA 340, it offers increased flex life and greater resistance to environmental stress cracking.

All grades of Teflon® PFA combine the processing ease of conventional thermoplastics with properties similar to those of Teflon® PTFE fluorocarbon resin. They have high melt strength, stability at high processing temperatures, and resistance to creep at high service temperatures.

Teflon® PFA retains its properties after service at 260°C (500°F) and has useful properties at temperatures as low as –196°C (–320°F). It is inert to nearly all industrial chemicals and solvents, and its dielectric properties are excellent. Products madewith Teflon® PFA have moderate stiffness and high elongation.

In a flame situation, products of Teflon® PFA resist ignition and do not themselves promote flame spread. When ignited by flame from other sources, their contribution of heat is very small and added at a slow rate with very little smoke.

Applications

Applications for Teflon® PFA 345 include tubing; wire and cable insulation; injection-molded parts; and chemically resistant linings for bellows, valves, fittings, pipes, pumps, and other fluid- handling components.

Available Properties
  • Specific Gravity
  • Water Absorption
  • Melt Flow
  • Hardness, Shore D
  • Tensile Strength, Ultimate
  • Elongation at Break
  • Flexural Modulus
  • Izod Impact, Notched
  • Volume Resistivity
  • Surface Resistivity per Square
  • Dielectric Constant
  • Dielectric Strength
  • Dissipation Factor
  • Arc Resistance
  • CTE, linear 100°C
  • Melting Point
  • Maximum Service Temperature, Air
  • Flammability, UL94
  • Oxygen Index
  • Drying Temperature
  • 20% Hydrochloric Acid Transmission, g/100sq in.
  • 50% Sodium Hydroxide Transmission, g/100sq in.
  • Acetic Acid Transmission, g/100sq in.
  • Acetone Transmission, g/100sq in.
  • Acetophenone Transmission, g/100sq in.
  • Benzene Transmission, g/100sq in.
  • Carbon Tetrachloride Transmission, g/100sq in.
  • Chemical/Solvent Resistance
  • Etyl Acetate Transmission, g/100sq in.
  • Folding Endurance, # cycles, .18-.20 mm
  • Heat of Combustion J/g
  • Hexane Transmission, g/100sq in.
  • Piperidine Transmission, g/100sq in.
  • Red Fuming Nirtric Acid Transmission, g/100sq in.
  • Salt Spray Resistance on aluminum, Hours
  • Sulfuric Acid Transmission, g/100sq in.
  • Water Transmission, g/100sq in.
  • Weather Resistance
  
Property Data

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