Teflon™ PFA 340
Molding and Extrusion Resin

Product Information
For inventory control purposes, product name may be followedby an X.
Products labeled PFA 340 and PFA 340 X are equivalent, and all
information in this document is applicable to both.

Typical Applications
Applications for Teflon™ PFA 340 include extruded tubing andother profiles for hose, wire and cable insulation, and sleeving;industrial film; and injection or compression molded articles
requiring superior electrical, chemical, and thermal properties.

Description
Teflon™ PFA 340 is a general-purpose fluoroplastic resin available
in pellet form. Compared with other grades of Teflon™ PFA, its
most unique features are a relatively high melt flow rate (typicalMFR of 14) and properties that make it suitable for a variety ofprocesses and demanding end uses. Table 1 shows the typical
property data for Teflon™ PFA 340.
Teflon™ PFA 340 is used when traditional extrusion and molding
processes are required for producing products with thesuperior properties of a fluoroplastic resin. Compared to otherthermoplastics, the high melt strength and thermal stabilityof Teflon™ PFA 340 can be used to improve processing rates.
Compared with other fluoroplastics, creep resistance at highservice temperatures provides a superior balance and level of
end-use properties. Teflon™ PFA 340 combines the processing
ease of conventional thermoplastics with many properties similar
to those of polytetrafluoroethylene.
Properly processed products made from neat Teflon™ PFA
340 resin provide the superior properties characteristic offluoroplastic resins: chemical inertness, exceptional dielectric
properties, heat resistance, toughness and flexibility, lowcoefficient of friction, non-stick characteristics, negligible
moisture absorption, low flammability, performance attemperature extremes, and excellent weather resistance.
In a flame situation, products of Teflon™ PFA 340 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 340 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 fluoroplastic 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 340 resin, refer to the Safety Data
Sheet and the latest edition of “The Guide to the Safe Handling ofFluoropolymer Resins,” published by The Society of the PlasticsIndustry, Inc. (www.fluoropolymers.org) or by PlasticsEurope(www.plasticseurope.org). Open and use containers only in wellventilated areas using local exhaust ventilation (LEV). Vapors and fumes
liberated during hot processing of Teflon™ PFA 340 should be exhausted
completely from the work area. Contamination of tobacco with thesepolymers must be avoided. Vapors and fumes liberated during hot
processing that are not properly exhausted, or from smoking tobacco
or cigarettes contaminated with Teflon™ PFA 340, may cause flu-like
symptoms, such as chills, fever, and sore throat. This may not occur
until several hours after exposure and will typically pass within about 24hours. Mixtures with some finely divided metals, such as magnesium oraluminum, can be flammable or explosive under some conditions.

Freight Classifications
Teflon™ PFA 340 resin is classified as “Plastics, Materials, Pellets.”

Storage and Handling
The properties of Teflon™ PFA 340 resin are not affected by storage
time. Ambient storage conditions should be designed to avoid
airborne contamination and water condensation on the resin when it
is removed from containers.

Packaging
Teflon™ PFA 340 is supplied as pellets and is available in 25-kg
multilayer bags with an integral polyethylene liner.

Molding and Extrusion Resin

Teflon™ PFA 340

Table 1: Typical Property Data for Teflon™ PFA 340 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)­  250 °C (482 °F)
Ultimate Elongation
23 °C (73 °F)
250 °C (482 °F)
Flexural Modulus
23 °C (73 °F)
250 °C (482 °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
14305 (581)
2.1550ISO 12086———

ASTM D3307
ASTM D4591
ASTM D792—g/10 min°C (°F)
—1/s

ISO 12086

ASTM D3307

MPa (psi)
25 (3,600)
12 (1,800)

ISO 12086

ASTM D3307%300480

ISO 178

ASTM D790

MPa (psi)—ISO 868

ASTM D2176‡
ASTM D2240

Cycles—590 (85,000)
55 (8,000)
15,000*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)—

<0.03
Outstanding>95
260 (500)
V-0* Depending on fabrication conditions‡ Historical standard
g
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 340 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 340 meets the requirements of ASTM D3307, Type I
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 PRODUCTTeflon™ is a registered trademark of Chemours for its brand of fluoroplastic 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 to the 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 body 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.

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Replaces: K-26135
C-10103 (3/20)