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	Metric	English	Comments

Specific Gravity	2.15 g/cc	2.15 g/cc	ASTM D792
Water Absorption	<= 0.030 % @Time 86400 sec	<= 0.030 % @Time 24.0 hour	ASTM D570
Melt Flow	5.0 g/10 min	5.0 g/10 min	ASTM D3307

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	55	55	ASTM D2240
Tensile Strength	27.0 MPa	3920 psi	ASTM D3307
Elongation, Ultimate	300 %	300 %	ASTM D3307
Flexural Modulus	0.551 GPa	79.9 ksi	ASTM D790
Flex Crack Resistance	50000 @Thickness 0.203 mm	50000 @Thickness 0.00800 in	Cycles MIT Folding Endurance; ASTM D2176

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+18 ohm-cm	>= 1.00e+18 ohm-cm	ASTM D257
Surface Resistivity per Square	>= 1.00e+17 ohm	>= 1.00e+17 ohm	ASTM D257
Dielectric Constant	2.03 @Frequency 1e+6 Hz	2.03 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	80.0 kV/mm @Thickness 0.250 mm	2030 kV/in @Thickness 0.00984 in	Short Time; ASTM D149
Dissipation Factor	0.00020 @Frequency 1e+6 Hz	0.00020 @Frequency 1e+6 Hz	ASTM D150
Arc Resistance	>= 180 sec	>= 180 sec	ASTM D495

Thermal Properties	Metric	English	Comments
Melting Point	305 °C	581 °F	ASTM D4591
Maximum Service Temperature, Air	260 °C	500 °F	Continuous, per accelerated heat-aging test
Flammability, UL94	V-0	V-0
Oxygen Index	>= 95 %	>= 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

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PDU8800 / 268726

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