Tefzel™ ETFE 280
Fluoroplastic Resin

Product Information
Description

Processing

Tefzel ETFE 280 is a premium fluoroplastic resin available
in translucent, 2.5-mm (0.1-in) pellets. Compared with othergrades of Tefzel™, its most unique features are relatively
low flow rate, greatly enhanced flex life, and resistance toenvironmental stress.

Tefzel™ ETFE 280 can be processed by conventional meltextrusion techniques and injection, compression, transfer, andblow molding processes. Compared with other grades of Tefzel™,processing will be at a slower rate. Also, the melt viscosity ofall grades of Tefzel™ is reduced with increasing shear rate; thus,permitting the use of pressure extrusions through narrow dies
without requiring appreciable draw-down. Reciprocating screw
injection molding machines are preferred. Corrosion-resistantmetals should be used in contact with molten resin. Extruder
barrels should be long, relative to diameter, to provide residence
time for heating the resin to approximately 340 °C (640 °F).

™

Tefzel™ ETFE 280 and the other Tefzel™ fluoroplastics aremelt processible, modified copolymers of ethylene andtetrafluoroethylene. They are high performance resins thatcan be processed at relatively high rates, compared withfluorocarbon resins. They are mechanically tough and offer anexcellent balance of properties.
Tefzel™ ETFE 280 is preferred for applications whereother thermoplastics are lacking in mechanical toughness;broad thermal capability; ability to meet unusual thermal,mechanical, and chemical environmental extremes; or limited
by fabricating problems. Examples are components andlinings for the chemical industry and molded parts with metal
inserts of thick sections for use at high temperatures.
Properly processed products made from neat Tefzel™ ETFE
280 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. They are resistant to environmental
stress cracking and have outstanding impact strength,
cut-through, and abrasion resistance. High-energy radiation
resistance meets IEEE 383, and the resin is approved fornuclear power plant use.
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.

Typical End Products
Tefzel™ ETFE 280 is ideal for many end products, including
chemical service items, such as lined valves and fittings, pumphousings and impellers, column packings, and other abrasionresistant linings; high temperature electrical components andinsulation; fasteners, corrugated tubing, and duct work; and film.

Safety Precautions
Before using Tefzel™ ETFE 280, refer to the Safety Data Sheetand the latest edition of “The Guide to the Safe Handling ofFluoropolymer Resins,” published by The Society of the Plastics
Industry, Inc. (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, or from smoking tobacco or cigarettes
contaminated with Tefzel™ ETFE 280, may cause flu-like
symptoms (chills, fever, sore throat) that may not occur until
several hours after exposure and typically pass within about24 hr. Vapors and fumes liberated during hot processing should
be exhausted completely from the work area; contamination oftobacco with polymers should be avoided.
Mixtures with some finely divided metals, such as magnesiumor aluminum, can be flammable or explosive under someconditions.

Tefzel™ ETFE 280

Fluoroplastic Resin

Storage and Handling

Packaging

The properties of Tefzel™ ETFE 280 resins are not affectedby storage time. Ambient storage conditions should bedesigned to avoid airborne contamination and the formationof water condensation on the resin when it is removed fromcontainers.

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

Table 1. Typical Property Data for Tefzel™ ETFE 280 Fluoroplastic Resin
Property

Test Method*

Unit

Value

ThermalNominal Melting Point
Flow Rate
Upper Service Temperature

D3159
D3159
UL746

°C (°F)g/10 min°C (°F)

255–280 (491–536)
4150 (302)

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)
Hardness Durometer
Compressive Strength
Linear Coefficient of Expansion, 0–100 °C (32–212 °F)

D3159
D792
D3159
D790
D256
D2240
D695
E831

MPa (psi)—%
MPa (psi)
J/m (ft·lb/in)
Shore DMPa (psi)
mm/mm/°C (in/in/°F)

47 (6,700)
1.73001,200 (170,000)
No Break72
38 (5,500)
13.3 x 10–5 (7.4 x 10–5)

Electrical
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
Arc Resistance

D149
D1531
D1531
D257
D495

kV/mm (V/0.001 in)——ohm·m (ohm·cm)
seconds

70 (1,800)
2.5–2.6
0.00721 x 1015 (1 x 1017)
122General
Water Absorption, 24 hr
Weather and Chemical Resistance
Limiting Oxygen Index

D570—D2863%—%0.007
Excellent
30–32*ASTM method, unless otherwise specified
Typical properties are not suitable for specification purposes.
Tefzel™ ETFE 280 meets the requirements of ASTM D3159 Type I, Grade 1.

HOW TO USE THE TEFZEL™ BRAND NAME WITH YOUR PRODUCT
Tefzel™ 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 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 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.

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For sales and technical support contacts, visit teflon.com/industrialglobalsupport© 2023 The Chemours Company FC, LLC. Teflon™, Tefzel™ 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-27021
C-10189 (8/23)