Teflon™ PFA 450HP
Molding and Extrusion Resin

Product Information
For inventory control purposes, product name may be followed by an X.

Processing

Products labeled PFA 450HP and PFA 450HP X are equivalent, and all
information in this document is applicable to both.

Teflon™ PFA 450HP can be processed by conventional melt extrusion,and by injection, compression, transfer, and blow-molding processes.
High melt 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 arepreferred. Corrosion-resistant metals should be used in contact withmolten fluoroplastic resin. Extruder barrel should be long, relative todiameter, 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 your Chemours representative.

Typical Applications
Applications for Teflon™ PFA 450HP include tubing, chemical linings forpipes, valves, and fittings used in the chemical processing industries,
unsupported pipe linings for the production of ultra-pure chemicals,
semiconductor components, and fluid handling components for highperformance chemical delivery systems where purity in the parts-perbillion range is needed. Teflon™ PFA 450HP is preferred in applications
where extended service is required in hostile environments involving
chemical, thermal, and mechanical stress.
Description
Teflon™ PFA 450HP is a special purpose fluoroplastic resin available inpellet form. This resin is a chemically modified form of Teflon™ PFA 350
that combines many of the benefits of the parent resin (highest resistanceto environmental stress-cracking with a typical MIT folding enduranceof 500,000*) with several additional benefits including enhanced purity,improved thermal stability while processing, and chemical inertness; forexample, to ozonated fluids. Table 1 shows the typical property data forTeflon™ PFA 450HP.
Teflon™ PFA 450HP is a relatively low melt flow rate (typical MFR of 2),
premium resin with the lowest level of extractables designed to meetultra-high purity requirements. An enhanced resistance to environmental
stress-cracking makes Teflon™ PFA 450HP a preferred resin when
extended service is required in hostile environments involving chemical,
thermal, and mechanical stress. Additionally, the enhanced purity ofTeflon™ PFA 450 HP makes it suitable for applications that require
improved color, lower extractable fluorides, and freedom from otherforeign materials. This product contains no additives and is designed for
hostile chemical environments where purity in the parts-per-billion range
is needed. Examples are in semiconductor manufacture, fluid handlingsystems for industry or life sciences, and instrumentation for precise
measurements of fluid systems. Compared to other thermoplastics,
the high melt strength and thermal stability of Teflon™ PFA 450HP canbe used to improve processing rates, combining the processing ease of
conventional thermoplastics with many properties similar to those ofpolytetrafluoroethylene.
Properly processed products made from neat Teflon™ PFA 450HP
resin provide the superior properties characteristic of fluoroplastic
resins: chemical inertness, exceptional dielectric properties, heatresistance, toughness and flexibility, low coefficient of friction, nonstick characteristics, negligible moisture absorption, low flammability,
performance at temperature extremes, and excellent weather resistance.
In a flame situation, products of Teflon™ PFA 450HP resist ignition and do
not promote flame spread. When ignited by flame from other sources, theircontribution of heat is very small and added at a slow rate with very littlesmoke.

Safety Precautions
WARNING! VAPORS CAN BE LIBERATED THAT MAY BE HAZARDOUS
IF INHALED.
Before using Teflon™ PFA 450HP resin, refer to the Safety Data Sheet andthe latest edition of “The Guide to the Safe Handling of Fluoropolymer
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 ofTeflon™ PFA 450HP should be exhausted completely from the work area.
Contamination of tobacco with these polymers must be avoided. Vaporsand fumes liberated during hot processing that are not properly exhausted,
or from smoking tobacco or cigarettes contaminated with Teflon™ PFA
450HP, may cause flu-like symptoms, such as chills, fever, and sore throat.
This may not occur until several hours after exposure and will typicallypass within about 24 hours. Mixtures with some finely divided metals, suchas magnesium or aluminum, can be flammable or explosive under someconditions.
Food Contact Compliance
Properly processed products made from Teflon™ PFA 450HP resin canqualify for use in contact with food in compliance with FDA 21 CFR
177.1550 and European Regulation (EU) No. 10/2011. For details andinformation, please contact your Chemours representative.
Storage and HandlingSpecial product isolation and packaging procedures are used by Chemours
to eliminate external contamination of Teflon™ PFA 450HP resin.
Processors also must avoid contamination for successful production ofhigh purity products. The properties of Teflon™ PFA 450HP resin are notaffected 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.
Freight Classifications
Teflon™ PFA 450HP resin is classified as “Plastics, Materials, Pellets.”
Packaging
Teflon™ PFA 450HP is supplied as pellets and is available in 25-kg
multilayer bags with an integral polyethylene liner.

Molding and Extrusion Resin

Teflon™ PFA 450HP

Table 1: Typical Property Data for Teflon™ PFA 450HP

Property

Test Method

Unit

Typical Value

GENERAL
Melt Flow Rate

ISO 12086

ASTM D3307

g/10 min

2Melting Point—ASTM D4591°C (°F)

305 (581)

Specific Gravity—

ASTM D792—

2.15

Critical Shear Rate, 372 °C (702 °F)

—

—

1/s

12ISO 12086

ASTM D3307

MPa (psi)

MECHANICAL
Tensile Strength
23 °C (73 °F)

28 (4,000)

250 °C (482 °F)

14 (2,000)

Ultimate Elongation

ISO 12086

ASTM D3307%23 °C (73 °F)

300

250 °C (482 °F)

500

Flexural Modulus

ISO 178ASTM D790

MPa (psi)

23 °C (73 °F)

625 (90,000)

250 °C (482 °F)

69 (10,000)—

ASTM D2176

Cycles500,000*

ISO 868

ASTM D2240—

D55

Dielectric Strength, Short Time, 0.25 mm (0.010 in)

IEC 243

ASTM D149

kV/mm (V/mil)

80 (2,000)

Dielectric Constant, 1 MHz (10 Hz)

IEC 250

ASTM D150—

2.03

Dissipation Factor, 1 MHz (106 Hz)

IEC 250

ASTM D150—<0.0002

Volume Resistivity

ISO 1325

ASTM D257

ohm·cm1018

Water Absorption, 24 hr—

ASTM D570

%

<0.03

Weather and Chemical Resistance———

OutstandingMIT Folding Endurance (0.20 mm, 8 mil film)
Hardness Durometer‡ELECTRICAL
6OTHER

Limiting Oxygen Index

ISO 4589

ASTM D2863%>95

Continuous Service Temperatureg——°C (°F)

260 (500)

Flammability Classification†—UL 94—V-0* Depending on fabrication conditions‡ Historical standard
gDefinition 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 450HP 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 450HP meets the requirements of ASTM D3307, Type II
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.
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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 conditionsof 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 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 a recommendation to infringe any patents.
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