Dupont(tm) tefzel(r) chemical use temperature guide
Technical Information
Table 1 lists over 450 chemicals whose corrosive
Tefzel® fluoropolymer resin is a proven performer in
characteristics create problems which can often be
the chemical and petrochemical processing indus-
solved by specifying
Tefzel® fluoropolymer. The
tries. It has gained notable recognition for its unique
maximum use temperature for each chemical
properties and design versatility which are helping
service listed is suggested
as a guide only.
to solve some of the industry’s toughest materials
Not all chemicals listed have been tested in a
problems in process equipment and components.
DuPont laboratory. This guide is based on selective
Like DuPont’s family of
Teflon® fluoropolymer
laboratory tests of representative chemicals; field
resins,
Tefzel® provides excellent resistance to attack
applications and experience; and engineering
by chemicals and solvents which can cause rapid
judgments as to the suitability of
Tefzel® in these
deterioration of other plastics and all but the most
Table 1 lists chemicals and the “upper suggested
Tefzel® is inert to strong mineral acids, inorganic
use temperatures” for organic and inorganic
bases, halogens and metal salt solutions. Even
chemicals and plating solutions. The temperature
carboxylic acids, anhydrides, aromatic and aliphatic
ratings, especially for inorganic chemicals, apply
hydrocarbons, alcohols, aldehydes, ketones, ethers,
to aqueous and nonaqueous systems. It is recom-
esters, chlorocarbons and classic polymer solvents
mended that tests be conducted under actual or
have little effect on
Tefzel®. Very strong oxidizing
simulated use conditions wherever possible to
acids near their boiling points, such as nitric at high
determine suitability of
Tefzel® or any other mate-
concentration, will however affect
Tefzel® in varying
rial for a specific application. It is also suggested
degrees. So will strong organic bases such as amines
that the equipment fabricator be consulted for
In addition to its chemical resistance,
Tefzel® hasexcellent mechanical strength, stiffness and abrasion
resistance. This may be an important consideration
for process applications where abrasive slurries
The data presented in
Table 2 show the effects of
often accelerate wear and degradation of alternative
various representative chemicals on the properties
materials.
Tefzel® can also be reinforced with glass
of
Tefzel® as tested in DuPont laboratories.
fibers to increase the flexural modulus to 950,000psi/6,550 MPa.
Tefzel® has a broad continuous use temperaturerange from –150° to 300°F (–100° to 150°C).
Specific temperature ratings vary with equipmentdesign, thus it is important to consult withcomponent manufacturers for in-use servicerecommendations.
The DuPont Oval Logo, DuPont™, The miracles of science™,and Tefzel® are trademarks or registered trademarks ofE.I. du Pont de Nemours and Company.
Chemical Compatibility Data on DuPont™ Tefzel®
(Based on Tests of Representative Materials and Engineering Judgment)
Maximum Use
Maximum Use
Temperature
Temperature
Chemical
Chemical
A Acetaldehyde
C Calcium Bisulfate
B Barium Carbonate
Table 1 (continued)
Chemical Compatibility Data on DuPont™ Tefzel®
(Based on Tests of Representative Materials and Engineering Judgment)
Maximum Use
Maximum Use
Temperature
Temperature
Chemical
Chemical
G Gallic Acid
Table 1 (continued)
Chemical Compatibility Data on DuPont™ Tefzel®
(Based on Tests of Representative Materials and Engineering Judgment)
Maximum Use
Maximum Use
Temperature
Temperature
Chemical
Chemical
H Heptane
M Magnesium Carbonate
Table 1 (continued)
Chemical Compatibility Data on DuPont™ Tefzel®
(Based on Tests of Representative Materials and Engineering Judgment)
Maximum Use
Maximum Use
Temperature
Temperature
Chemical
Chemical
Table 1 (continued)
Chemical Compatibility Data on DuPont™ Tefzel®
(Based on Tests of Representative Materials and Engineering Judgment)
Maximum Use
Maximum Use
Temperature
Temperature
Chemical
Chemical
U UDMH-Hydrazine (50/50)
PLATING SOLUTIONS
These test results confirm the chemical resistant
The test results shown in
Table 2 represent the
tensile strength, elongation and weight changes after
exposures at indicated temperatures.
Actual Laboratory Tests on
Chemical Compatibility of DuPont™ Tefzel®
with Representative Chemicals
Retained Properties—%
Temperature
Chemical
Strength
Acid/Anhydrides
Acetic Acid (Glacial)
Aliphatic Hydrocarbons
Mineral Oil
Aromatic Hydrocarbons
Benzene
Functional Aromatics
O-Cresol
Amines
Aniline
Chlorinated Solvents
Carbon Tetrachloride
Ethers
Tetrahydrofuran
Aldehyde/Ketones
Acetone
Table 2 (continued)
Actual Laboratory Tests on
Chemical Compatibility of DuPont™ Tefzel®
with Representative Chemicals
Retained Properties—%
Temperature
Chemical
Strength
Esters
n-Butyl Acetate
Polymer Solvents
Dimethylformamide
Other Organics
Benzoyl Chloride
Acids
Aqua Regia
Halogens
Bromine (Anhy)
Bases
Ammonium Hydroxide
Peroxides
Hydrogen Peroxide
NOTES: Change in properties -15% is considered insignificant. Samples were 10–15 mil microtensile bars. TS/E and wt. gain determined
within 24 hours after removal from exposure media.
Table 2 (continued)
Actual Laboratory Tests on
Chemical Compatibility of DuPont™ Tefzel®
with Representative Chemicals
Retained Properties—%
Temperature
Chemical
Strength
Salt-Metal Etchants
Ferric Chloride
Other Inorganics
Phosphoric Oxychloride
Miscellaneous
A-20 Stripper Solution
NOTES: Change in properties -15% is considered insignificant. Samples were 10–15 mil microtensile bars. TS/E and wt. gain determined
within 24 hours after removal from exposure media.
DuPont FluoroproductsP.O. Box 80713Wilmington, DE 19880-0713www.teflon.com
DuPont de Nemours Int’l SA DuPont Mitsui
5–18, Sarugaku-cho 1-chome Kowloon, Hong Kong
CH-1218 Le Grand-Saconnex Chiyoda-ku, Tokyo 101 Japan (852) 27341948
Mississauga, Ontario, Canada P.O. Box 263
[email protected]
The information set forth herein is furnished free of charge and is based on technical data that DuPont 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, we make no warranties, express or implied, and
assume 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.
CAUTION: Do not use in medical applications involving permanent implantation in the human body. For other medical applications, see “DuPont Medical Caution Statement,”
H-50102.
Source: http://www.hawk.com.au/files/tefzel%20compatability.pdf
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