Teflon™ PFA 951HP Plus
Molding and Extrusion Resin

Product Information
For inventory control purposes, product name may be followed by an X.
Products labeled PFA 951HP Plus and PFA 951HP Plus X are equivalent,
and all information in this document is applicable to both.
Typical Applications
With permeation resistance that is up to 60% greater than standard PFA,
Teflon™ PFA 951HP Plus is designed for applications where reduced chemical
permeation, resistance to stress-cracking, and surface smoothness are
critical to reducing contamination and protecting process yields. Applications
for Teflon™ PFA 951HP Plus include fluid handling components for highperformance chemical delivery systems, as well as tubing, unsupported
pipe linings for the production of ultra-pure chemicals, and semiconductor
components where purity in the parts-per-billion range is needed.
Description
Teflon™ PFA 951HP Plus is a premium fluoropolymer resin available in pellet
form. Teflon™ PFA 951HP Plus possesses the same exceptional chemical
resistance, high purity, and protection against ionic contamination as
Teflon™ PFA HP grades with the added benefits of improved flex life andchemical stress-crack resistance. Teflon™ PFA 951HP Plus has unmatched
HCl permeation resistance, and is also 45% less permeable to nitrogenthan other PFAs (permeation by nitrogen is a general indication of therate of permeation by other molecules). Additionally, the improved flex lifeand chemical resistance will reduce the cost of ownership of high purity
fluid handling systems by reducing downtime caused by mechanical orchemical stresses. Parts molded with Teflon™ PFA 951HP Plus have an
exceptionally smooth finish, which can further help prevent buildup of
microbial contamination in water handling systems. Table 1 shows thetypical property data for Teflon™ PFA 951HP Plus.
Teflon™ PFA 951HP Plus is a relatively low melt flow rate (typical MFR of2), special purpose resin with the lowest level of extractables designed
to meet ultra-high purity requirements. The enhanced resistance toenvironmental stress-cracking makes Teflon™ PFA 951HP Plus a preferredresin when extended service is required in hostile environments involving
chemical, thermal, and mechanical stress. Additionally, the enhanced
purity of Teflon™ PFA 951HP Plus 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. Teflon™ PFA 951HP Plus combines theprocessing ease of conventional thermoplastics with the properties similar
to those of polytetrafluoroethylene.
With Teflon™ PFA 951HP Plus, components can last longer under dynamic
loads and resist damage caused by ozonated fluids and fluorosurfactants.
Combined with exceptional chemical, permeation, and stress-crack
resistance, this durability leads to a reduced cost of ownership. The highpurity and fully fluorinated molecule end groups of Teflon™ PFA 951HP Plus
can reduce contamination to protect process yields.

Properly processed products made from neat Teflon™ PFA 951HP Plus resin
provide the superior properties characteristic of fluoroplastic resins: chemical
inertness, exceptional dielectric properties, heat resistance, toughness andflexibility, low coefficient of friction, non-stick characteristics, negligible
moisture absorption, low flammability, performance at temperature extremes,and excellent weather resistance.
In a flame situation, products of Teflon™ PFA 951HP Plus resist ignition anddo 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 little smoke.
Processing
Teflon™ PFA 951HP Plus can be processed by conventional melt extrusion,and by injection, compression, transfer and blow-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. Corrosionresistant 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 380 °C (716 °F). For more detailed
processing information, including recommended draw-down ratios, consult
your Chemours representative.
Safety Precautions
WARNING! VAPORS CAN BE LIBERATED THAT MAY BE HAZARDOUS IFINHALED.
Before using Teflon™ PFA 951HP Plus resin, refer to the Safety Data
Sheet (SDS) and latest edition of “The Guide to the Safe Handling of
Fluoropolymer Resins,” published by the Plastics Industry Association(www.plasticsindustry.org) or 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 951HP Plus should be exhausted completely from the work area.
Contamination of tobacco with these polymers must be avoided. Vapors andfumes liberated during hot processing that are not properly exhausted, or fromsmoking tobacco or cigarettes contaminated with Teflon™ PFA 951HP Plus,
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
24 hours. Mixtures with some finely divided metals, such as magnesium oraluminum, can be flammable or explosive under some conditions.
Storage and HandlingSpecial product isolation and packaging procedures are used by Chemoursto eliminate external contamination of Teflon™ PFA 951HP Plus resin.
Processors also must avoid contamination for successful production of highpurity products. The properties of Teflon™ PFA 951HP Plus resin are notaffected by storage time. Ambient storage conditions should be designed toavoid airborne contamination and water condensation on the resin when it isremoved from containers.
Freight Classifications
Teflon™ PFA 951HP Plus resin is classified as “Plastics, Materials, Pellets.”
Packaging
Teflon™ PFA 951HP Plus is supplied as pellets and is available in 25-kg (55-lb)
multilayer bags with an integral polyethylene liner.

Molding and Extrusion ResinTeflon™ PFA 951HP Plus

Table 1: Typical Property Data for Teflon™ PFA 951HP Plus

Property

Test Method

Unit

Typical Value

GENERAL
Melt Flow Rate

ISO 12086

ASTM D3307

g/10 min2

Melting Point—ASTM D4591°C (°F)

300-320 (572-608)

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 (4,100)

200 °C (392 °F)

15 (2,200)

Ultimate Elongation

ISO 12086

ASTM D3307%

23 °C (73 °F)

290

200 °C (392 °F)

450

Flexural Modulus

ISO 178

ASTM D790

MPa (psi)

23 °C (73 °F)

600 (87,000)

200 °C (392 °F)

55 (8,000)—

ASTM D2176‡

Cycles1,800,000*

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 (106 Hz)

IEC 250

ASTM D150—

2.03

Dissipation Factor, 1 MHz (10 Hz)

IEC 250

ASTM D150—<0.0002

Volume Resistivity

ISO 1325

ASTM D257

ohm·cm1018—

ASTM D570%<0.03MIT Folding Endurance (0.20 mm, 8 mil film)
Hardness Durometer
ELECTRICAL

6OTHER
Water Absorption, 24 hr
Weather and Chemical Resistance
Limiting Oxygen Index
Flammability Classification†———Outstanding

ISO 4589

ASTM D2863

%>95

—

UL 94

—

V-0

* Depending on fabrication conditions‡ Historical standard† 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: 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 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 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 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.
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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