Teflon™ PFA 345
Molding and Extrusion Resin

Product Information
For inventory control purposes, product name may be followedby an X.
Products labeled PFA 345 and PFA 345 X are equivalent, and all
information in this document is applicable to both.

Typical Applications
Applications for Teflon™ PFA 345 include extruded tubing, wireand cable insulation, injection molded parts, and chemicallyresistant linings for bellows, valves, fittings, pipes, pumps, andother fluid-handling components.

Description
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).
Table 1 shows the typical property data for Teflon™ PFA 345.
Teflon™ PFA 345 is used when traditional extrusion and molding
processes are required for producing products with thesuperior properties of a fluoropolymer resin. Compared to otherthermoplastics, the high melt strength and thermal stabilityof Teflon™ PFA 345 can be used to improve processing rates.
Compared with other fluoropolymers, creep resistance at highservice temperatures provides a superior balance and level ofend-use properties. Teflon™ PFA 345 combines the processing
ease of conventional thermoplastics with many properties similar
to those of polytetrafluoroethylene.
Properly processed products made from neat Teflon™ PFA
345 resin provide the superior properties characteristic offluoropolymer resins: chemical inertness, exceptional dielectric
properties, heat resistance, toughness and flexibility, lowcoefficient of friction, non-stick characteristics, negligiblemoisture absorption, low flammability, performance attemperature extremes, and excellent weather resistance.
In a flame situation, products of Teflon™ PFA 345 resist ignitionand do not promote flame spread. When ignited by flame fromother sources, their contribution of heat is very small and added
at a slow rate with very little smoke.

Processing
Teflon™ PFA 345 can be processed by conventional melt extrusion,and by injection, compression, and transfer molding processes. Highmelt strength and heat stability permit the use of relatively large die
openings and high temperature draw-down techniques that increase
production rates. Reciprocating screw injection molding machines
are preferred. Corrosion-resistant metals should be used in contact
with molten fluoropolymer resin. Extruder barrel should be long,
relative to diameter, to provide residence time for heating the resin
to approximately 390 °C (730 °F). For more detailed processing
information, including recommended draw-down ratios, consult yourChemours sales representative.

Safety Precautions
WARNING! VAPORS CAN BE LIBERATED THAT MAY BE
HAZARDOUS IF INHALED.
Before using Teflon™ PFA 345 resin, refer to the Safety Data
Sheet and the latest edition of “The Guide to the Safe Handling of
Fluoropolymer Resins,” published by the Plastics Industry Association(www.fluoropolymers.org) or by PlasticsEurope (www.plasticseurope.org).
Open and use containers only in well-ventilated areas using local
exhaust ventilation (LEV). Vapors and fumes liberated during hot
processing of Teflon™ PFA 345 should be exhausted completely fromthe work area. Contamination of tobacco with these polymers must
be avoided. Vapors and fumes liberated during hot processing thatare not properly exhausted, or from smoking tobacco or cigarettes
contaminated with Teflon™ PFA 345, may cause flu-like symptoms, suchas chills, fever, and sore throat. This may not occur until several hours
after exposure and will typically pass within about 24 hours. Mixtureswith some finely divided metals, such as magnesium or aluminum, can be
flammable or explosive under some conditions.

Storage and Handling
The properties of Teflon™ PFA 345 resin are not affected by storage
time. Ambient storage conditions should be designed to avoid
airborne contamination and water condensation on the resin when itis removed from containers.

Freight Classifications
Teflon™ PFA 345 resin is classified as “Plastics, Materials, Pellets.”

Packaging
Teflon™ PFA 345 is supplied as pellets and is available in 25-kg
multilayer bags with an integral polyethylene liner.

Molding and Extrusion Resin

Teflon™ PFA 345

Table 1: Typical Property Data for Teflon™ PFA 345 Molding and Extrusion Resin
Property
GENERAL
Melt Flow Rate
Melting Point
Specific Gravity
Critical Shear Rate, 372 °C (702 °F)
MECHANICAL
Tensile Strength
23 °C (73 °F)
Ultimate Elongation
23 °C (73 °F)
Flexural Modulus
23 °C (73 °F)
MIT Folding Endurance (0.20 mm, 8 mil film)
Hardness Durometer
ELECTRICAL
Dielectric Strength, Short Time, 0.25 mm (0.010 in)Dielectric Constant, 1 MHz (106 Hz)
Dissipation Factor, 1 MHz (106 Hz)
Volume Resistivity
OTHER
Water Absorption, 24 hr
Weather and Chemical Resistance
Limiting Oxygen Index
Continuous Service Temperatureg
Flammability Classification†

Test Method

Unit

Typical Value
5305 (581)
2.15
21ISO 12086———

ASTM D3307
ASTM D4591
ASTM D792—

g/10 min°C (°F)—1/sISO 12086

ASTM D3307

MPa (psi)

ISO 12086

ASTM D3307%

ISO 178

ASTM D790

MPa (psi)—ISO 868

ASTM D2176‡
ASTM D2240

Cycles—551 (80,000)
50,000*D55

IEC 243
IEC 250
IEC 250
ISO 1325

ASTM D149
ASTM D150
ASTM D150
ASTM D257

kV/mm (V/mil)——ohm·cm

80 (2,000)
2.03<0.0002
1018——
ISO 4589——

ASTM D570—
ASTM D2863—
UL 94%—%°C (°F)—<0.03Outstanding>95260 (500)V-027 (3,900)300* Depending on fabrication conditions‡ Historical standardg
Definition of continuous service temperature: The continuous service temperature is based on accelerated heat-aging tests, and represents the temperature at which tensile strength andultimate elongation retain 50% of the original values after 20,000 hr thermal aging. Continuous service temperature above 260 °C (500 °F) may be feasible, depending on such factors
as chemical exposure, support from the substrate, etc. When considering uses of Teflon™ PFA 345 above 260 °C (500 °F), preliminary testing should be done to verify suitability.
† These results are based on laboratory tests under controlled conditions and do not reflect performance under actual fire conditions; current rating is a typical theoretical value.
Note: Teflon™ PFA 345 meets the requirements of ASTM D3307, Type III
Typical properties are not suitable for specification purposes.
Statements or data regarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions.

HOW TO USE THE TEFLON™ BRAND NAME WITH YOUR PRODUCT
Teflon™ is a registered trademark of Chemours for its brand of fluoropolymer resins, coatings, films, and dispersions. The Teflon™ brand name is licensed by Chemours in association with approved applications.
Without a trademark license, customers may not identify their product with the Teflon™ brand name, as Chemours does not sell such offerings with the Teflon™ trademark. Unlicensed customers may refer tothe Chemours product offering with only the Chemours name and product code number descriptor as Chemours sells its product offerings. There are no fair use rights or exhaustion of rights to use the Teflon™
trademark from buying from Chemours, a Chemours customer, or a distributor without a trademark license from Chemours.
If you are interested in applying for a trademark licensing agreement for the Teflon™ brand, please visit www.teflon.com/license

CAUTION: Do not use or resell Chemours materials in medical applications involving implantation in the human body or contact with internal bodily fluids or tissues unless agreed to by Seller in a writtenagreement covering such use. For further information, please contact your Chemours representative. For medical emergencies, spills, or other critical situations, call (866) 595-1473 within the UnitedStates. For those outside of the United States, call (302) 773-2000.
The information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It is intended for use by persons having technical skill, at their own
discretion and risk. The handling precaution information contained herein is given with the understanding that those using it will satisfy themselves that their particular conditions of use present
no health or safety hazards. Because conditions of product use are outside our control, Chemours makes no warranties, express or implied, and assumes no liability in connection with any useof this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate under or arecommendation to infringe any patents.
NO PART OF THIS MATERIAL MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISEWITHOUT THE PRIOR WRITTEN PERMISSION OF CHEMOURS.

For more information, visit teflon.com/industrial
For sales and technical support contacts, visit teflon.com/industrialglobalsupport© 2017 The Chemours Company FC, LLC. Teflon™ and any associated logos are trademarks or copyrights of The Chemours Company FC, LLC. Chemours™ and the Chemours Logo aretrademarks of The Chemours Company.
Replaces: K-26136
C-10104 (12/17)