Chemours Teflon™ PFA 345 Medium melt flow rate fluoropolymer resin

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Chemours Teflon™ PFA 345 Medium melt flow rate fluoropolymer resin
Categories:	Polymer; Thermoplastic; Fluoropolymer; Perfluoroalkoxy (PFA)
Material Notes:	Teflon™ PFA 345 is a medium melt flow rate fluoropolymer resin available in pellet form. Compared with Teflon™ PFA 340, it offers increased flex life and greater resistance to environmental stress-cracking (Teflon™ PFA 345 offers a typical MIT folding endurance of 50,000* compared to 15,000 in Teflon™ PFA 340). Applications for Teflon™ PFA 345 include extruded tubing, wire and cable insulation, injection molded parts, and chemically resistant linings for bellows, valves, fittings, pipes, pumps, and other fluid-handling components. Information provided by Chemours.
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Physical Properties	Original Value	Comments

Specific Gravity	2.15 g/cc	ASTM D792
Water Absorption	<= 0.030 % @Time 86400 sec	ASTM D570
Melt Flow	5.0 g/10 min	ASTM D3307

Mechanical Properties	Original Value	Comments
Hardness, Shore D	55	ASTM D2240
Tensile Strength	27.0 MPa	ASTM D3307
Elongation, Ultimate	300 %	ASTM D3307
Flexural Modulus	0.551 GPa	ASTM D790
Flex Crack Resistance	50000 @Thickness 0.203 mm	Cycles MIT Folding Endurance; ASTM D2176

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 1.00e+18 ohm-cm	ASTM D257
Surface Resistivity per Square	>= 1.00e+17 ohm	ASTM D257
Dielectric Constant	2.03 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	80.0 kV/mm @Thickness 0.250 mm	Short Time; ASTM D149
Dissipation Factor	0.00020 @Frequency 1e+6 Hz	ASTM D150
Arc Resistance	>= 180 sec	ASTM D495

Thermal Properties	Original Value	Comments
Melting Point	305 °C	ASTM D4591
Maximum Service Temperature, Air	260 °C	Continuous, per accelerated heat-aging test
Flammability, UL94	V-0
Oxygen Index	>= 95 %	ASTM D2863

Descriptive Properties
Chemical/Solvent Resistance	Excellent	ASTM D543
Critical Shear Rate (1/s)	21	372°C
Heat of Combustion	5.3 MJ/kg	ASTM D240
Salt Spray Resistance Coatings (hours)	1000	ASTM B117. 5% NaCl at 35 °C (95 °F).
Weather and Chemical Resistance	Outstanding
Weather Resistance (years unaffected)	10	Florida Exposure

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PDU8800 / 268726

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