Tefzel™ ETFE 207
Fluoroplastic Resin

Product Information
Description
Tefzel™ ETFE 207 is a special-purpose fluoroplastic resin
available in translucent, 2.5-mm (0.1-in) pellets. Comparedwith other grades of Tefzel™, it has a higher flow rate andstill maintains a service temperature of 150 °C (302 °F).
Tefzel™ ETFE 207 and the other Tefzel™ fluoroplastics aremelt processible, modified copolymers of ethylene andtetrafluoroethylene. They are high-performance resinsthat can be processed at relatively high rates comparedwith fluorocarbon resins. They are mechanically tough andoffer an excellent balance of properties.
The relatively high flow rate (see Table 1) of Tefzel™ ETFE
207 makes it uniquely suitable for high-speed processing,
especially for extruded coatings and injection moldingof slender, thin-walled, or intricate shapes. Properly
processed products made from neat Tefzel™ ETFE 207
are inert to most solvents and chemicals, hydrolyticallystable, and weather-resistant. Recommended upper
service temperature is 150 °C (302 °F); useful propertiesare retained at cryogenic ranges. The level and stability ofdielectric properties are excellent, and the flame rating is
V-0 by the UL94 method. Mechanical properties include
outstanding impact strength, cut-through, and abrasionresistance.
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 fireconditions.
Processing
Tefzel™ ETFE 207 can be processed by conventional,melt-extrusion techniques and injection, compression,transfer, and blow molding processes. Compared withother grades of Tefzel™, it can be processed with greater
ease and speed because of its high flow rate. Also, themelt viscosity of Tefzel™ is reduced with increasing shear
rate; thus, permitting the use of pressure extrusions throughnarrow dies without requiring appreciable drawdown.
Reciprocating screw injection molding machines arepreferred. Corrosion-resistant metals are recommended forcontact with molten resin.
Extruder barrels should be long, relative to diameter,
to provide residence time for heating the resin toapproximately 340 °C (640 °F).
Typical End Products
Tefzel™ ETFE 207 is ideal for many end products, including
electrical components, such as sleeving, coil forms,sockets, connectors, and switches; lab ware, such as tubing,valves, containers, and fasteners; battery or instrumentcomponents that require chemical inertness; andmechanical parts. The high melt flow rate of this productmakes it ideal for injection molding and thin wall extrusion.
Safety Precautions
Before using Tefzel™ ETFE 207, refer to the Safety Data
Sheet and the latest edition of “The Guide to the Safe
Handling of Fluoropolymer Resins,” published by The Societyof the Plastics Industry, Inc. (www.fluoropolymers.org) or by
PlasticsEurope (www.plasticseurope.org).
Open and use containers only in well-ventilated areasusing local exhaust ventilation (LEV). Vapors and fumes
liberated during hot processing, or from smoking tobacco orcigarettes contaminated with Tefzel™ ETFE 207, may cause
flu-like symptoms (chills, fever, sore throat) that may notoccur until several hours after exposure and typically passwithin about 24 hours. Vapors and fumes liberated during
hot processing should be exhausted completely from thework area; contamination of tobacco with polymers should
be avoided.
Mixtures with some finely divided metals, such as
magnesium or aluminum, can be flammable or explosive
under some conditions.

Fluoroplastic Resin

Tefzel™ ETFE 207

Packaging

Storage and Handling
The properties of Tefzel ETFE 207 resins are notaffected by storage time. Ambient storage conditions
should be designed to avoid airborne contamination andthe formation of water condensation on the resin when it
is removed from containers.
™

Tefzel™ ETFE 207 fluoroplastic resins are packaged in
20.3-kg (45-lb) plastic bags.

Table 1. Typical Property Data for Tefzel™ ETFE 207 Fluoroplastic Resin
Property

Test Method*

UnitValue

D3159
D3159
UL746

°C (°F)g/10 min°C (°F)

250–280 (491–536)
30150 (300)

MechanicalTensile Strength, 23 °C (73 °F)
Specific Gravity
Ultimate Elongation, 23 °C (73 °F)
Flexural Modulus, 23 °C (73 °F)
Impact Strength, 23 °C (73 °F)

D3159
D792
D3159
D790
D256

MPa (psi)—%
MPa (psi)
J/m (ft·lb/in)

40 (5,800)
1.7300
1,000 (150,000)
No BreakElectrical
Dielectric Strength, 0.25 mm (0.010 in)Dielectric Constant, 1 MHz, 23 °C (73 °F)
Dissipation Factor, 1 MHz, 23 °C (73 °F)
Volume Resistivity

D149
D150
D150
D257

KV/mm (V/0.001 in)——
ohm·m (ohm·cm)

65 (1,700)
2.6–2.80.009
1 x 1015 (1 x 1017)

General Properties
Water Absorption, 24 hr
Weather and Chemical Resistance
Limiting Oxygen Index

D570
—
D2863

%
—
%

0.007
Excellent
30–32

ThermalNominal Melting Point
Flow Rate
Upper Service Temperature*ASTM method unless otherwise specified
Typical properties are not suitable for specification purposes.
Tefzel™ ETFE 207 meets the requirements of ASTM D3159, Type I, Grade 3

HOW TO USE THE TEFZEL™ BRAND NAME WITH YOUR PRODUCTTefzel™ is a registered trademark of Chemours for its brand of ETFE fluoroplastic resins. The Tefzel™ brand name is licensed by Chemours in association with approved applications.
Without a trademark license, customers may not identify their product with the Tefzel™ brand name as Chemours does not sell such offerings with the Tefzel™ 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 fairuse rights or exhaustion of rights to use the Tefzel™ 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 Tefzel™ brand, please visit 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 safetyhazards. Because conditions of product use are outside our control, Chemours makes no warranties, express or implied, and assumes no liability in connection with any use of this information. As with anymaterial, 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 a recommendation 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/tefzel
For sales and technical support contacts, visit teflon.com/industrialglobalsupport© 2020 The Chemours Company FC, LLC. Tefzel™, Teflon™, and any associated logos, are trademarks or copyrights of The Chemours Company FC, LLC. Chemours™ and the Chemours
Logo are trademarks of The Chemours Company.
Replaces: K-27020

C-10188 (3/20)