Coating
Selection Guide
The following is only a small representation of the coatings available.
Use them as a guide, but contact Coating Solutions
for more complete information.
View the Chemical Compatibility Chart.
Click on a coating for more detailed information.
Teflon® S | Teflon®
PTFE
| Ceramic Reinforced
Coating with Teflon®
Teflon FEP® | Silverstone® Supra™ | Xylan® 1010 | Xylar® 2 | Kynar®
Use
the following chart to determine general characteristics
of resins used in Teflon®
Coatings.
E= Excellent, VG= Very Good, G=Good, F=Fair
| Properties Desired |
Units |
PTFE |
FEP |
PFA |
Teflon-S |
| Non-Stick | -- | E | E | VG | VG |
|---|---|---|---|---|---|
| Chemical Resistance |
-- | VG | E | E | G |
| Abrasion Resistance |
-- | G | G | VG | E |
| Salt Spray Resistance |
-- | G | E | E | E |
| Water Absorption | percent | <0.01 | <0.01 | <0.007 | -- |
| Coef. of Friction -Kinetic -Static |
-- | 0.08 .1 |
0.08 .2 |
0.1 .2 |
0.1-0.4 .15-.35 |
| Specific Gravity | none | 2.20 | 2.15 | 2.15 | -- |
| Melt Point | oF | 627 | 500 | 575 | -- |
| Hardness | Shore D | 60 | 55 | 60 | 60-90 |
| Max Continuous Use Temperature |
oC oF |
290 550 |
204 400 |
260 500 |
150-260 300-500 |
| Thermal Conductivity |
(BTU) | 1.70 | 1.35 | 1.30 | -- |
| Coef. of Linear Thermal Expansion |
in/in/oF | 5.5 | 5.4 | 7.6 | -- |
| Dielectric (short term Strength 10 mil film) |
volts/mil | 1200 | 2000 | 2000 | Up to 1400 |
| Surface Resistivity | ohms/sq. | 1.OE18 | 1.OE18 | 1.OE18 | -- |
| Volume Resistivity | ohms cm. | 1.OE18 | 1.OE16 | 1.OE16 | -- |
| Tensile Strength | MPa@23o C | 20 | 23 | 25 | 20-80 |
| Elongation at Break | percent at 23oC | 300 | 325 | 300 | 1-160 |
Teflon®
S
Teflon® S coatings are self priming, one coat products. They are formulated
with organic binders to improve adhesion without the use of primers. They
typically cure at lower temperatures than pure fluoropolymer dispersions. The
fluoropolymer resin stratifies to the surface during the cure cycle, but
because of the binder of resins, certain properties of the pure fluoropolymer
may be compromised. These include temperature resistance and release.
Benefits:
One-coat/solvent
based coating system
Excellent
abrasion resistance
Very
good non-stick/low friction
Good
chemical corrosion resistance
Cure
temperature 350-630oF
958-203 Black:
Dry lubricant designed for use under conditions of moderate abrasion and where
non-stick properties contribute to product performance. Maximum use temperature
is 425oF continuous and 450oF intermittent.
958-303 Black & 958-207 Green
Specially formulated to provide tough, durable film for dry lubrication, with
excellent salt spray resistance. Can be cured as low a 350oF. Maximum
temperature is 500oF but abrasion resistance is reduced at temperatures above
400oF.
959-203 Black & 959-205 Chocolate
FDA conforming, non-stick finishes for moderate cure temperatures.
958-313
Teflon® S 958-313 has exceptionally good abrasion resistance and provides a
tough durable film for dry lubrication. In addition, it has excellent salt
spray resistance. This coating can be cured at temperatures as low as 350oF
with a maximum use temperature of 500oF. Does not comply with FDA
regulations.
Teflon® PTFE
Teflon® PTFE coatings have the lowest coefficient of friction and highest temperature resistance of any of the Teflon® coating systems. PTFE-based products can typically withstand temperatures of 550oF on a continuous basis and up to 600oF for brief periods. PTFE coatings are very good electrical insulators and are extremely non-wetting. They are inert to almost all chemicals, but are somewhat porous and thus permeable to water vapor and other gases. The substrate must be able to withstand a cure temperature of at least 750oF to consider PTFE-based coating. Theoretical coverage at 1 mil (25 microns).
Benefits:
One-coat
or primer/topcoat system
Excellent
non-stick/low friction
Very
good chemical/corrosion resistance
Good
abrasion resistance
Cure
temperature 750oF
420-104 Gray & 420-109 Metallic
Black: These coatings are FDA conforming and have excellent adhesion,
durability, heat resistance and non-stick qualities. This makes them a good
choice in a variety of situations where dry lubrication and release in an
abrasive or high temperature environment are needed. Maximum use temperature is
550oF continuous and 600oF intermittent.
PTFE 851-214 Green &
PTFE 851-224 High Build Green
This coating is not FDA conforming. It is an industrial topcoat finish for dry
lubrication, non-stick and high temperature resistance. It can withstand 550oF
continuously and 600oF intermittently.
Teflon® FEP
FEP-based
Teflon® coatings
have superb release and are frequently used as mold release coatings. They melt
flow to form a non-porous film and are thus more chemically resistant than PTFE
coatings. FEP coatings have lower heat resistance than PTFE, but also cure at
lower temperatures. FEP coatings are extremely non-wetting and have a very low
coefficient or friction. Maximum use temperature
is 400oF in an abrasive environment and
450oF in an unabrasive environment.
Benefits:
Primer/topcoat coating system
Excellent non-stick/low friction
Excellent chemical/corrosion resistance
Good abrasion resistance
Cure temperature 650oF
856-200 Clear & 856-211 Gray:
FEP topcoats provide non-stick, chemical and corrosion resistance. Since FEP
can melt-flow to nonporous film, it is a natural choice for release applications
with low abrasion such as molds and bakeware. Must be used with primer. 856-line
complies with FDA regulations when used with an FDA conforming primer.
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Silverstone® Supra™
Industrial Supras
contains PTFE an PFA, a patented combination offering long lasting release. Reinforced ceramic coating
with Teflon®
(857-101, 202, 301) goes a step further than
Supra by including ceramic for advanced abrasion and cut resistance This
is a three coat system, but there is no bake between coats. Supra complies with
FDA regulations in 21.CFR governing components of coatings for direct food contact
when applied according to Fact Sheet instructions. Theoretical coverage at 1 mil
(25 microns). Maximum use temperature
is 550oF continuous and 600oF intermittent.
Benefits:
Long lasting release
Excellent dielectric strength
Good chemical/corrosion resistance
FDA compliant
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Ceramic Reinforced Coating with Teflon®
These water based products form a three coat, ceramic based system designed for durability and abrasion resistance with excellent release. The midcoat/topcoat bake must be above 800oF for optimum properties. 857-Line complies with FDA regulations in 21.CFR governing components of coatings for direct food contact when applied according to Fact Sheet instructions. Maximum use temperature is 550oF (288C) continuous and 600oF (315C) intermittent.
Benefits:
Contains PTFE and PFA
Excellent abrasion resistance
Advanced cut resistance
Long lasting release
Xylan 1010®
Xylan coatings are composite
materials which make them different from traditional fluoropolymer coatings. This
combination creates unique and desirable properties such as low friction, wear
and weather resistance, and excellent adhesion. The 1010 is a resin-bonded,
dry-film lubricant/non-stick coating. It may be used to reduce friction, prevent
scoring and galling and provide secondary lubrication. Ideal for sustained release
and wear resistance at high temperatures. Operating temperature range from
-420oF
to 550oF. Excellent adhesion to most metals, plastics, ceramics, and wood.
Benefits:
Friction as low as 0.02
Good chemical and corrosion resistance
Resistant against sunlight, saltwater and road chemicals
Pliable
Excellent adhesion
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Xylar® 2
Xylar 2 Base Coat is a second generation, metallic-ceramic coating initially developed for aircraft/aerospace application that required a smoother finish than was obtainable with its predecessor, Xylar 1 Base Coat. Like Xylar 1, this coating protects metals from 1) corrosion caused by salt spray and salt water exposure and 2) high temperature oxidation.
In conjunction with Xylar 101 Sealer,
Xylar 2 Base Coat provides a minimum of 1,000 hours sacrificial corrosion
protection with no galvanic attack of the basis metal after continuous exposure
to 5% salt spray (ASTM-B117 method). High temperature applications include
exhaust manifolds, high performance automotive pistons, and furnace components.
Many coating applicators now specify Xylar 2 Base Coat because of its improved
spray characteristics and surface finish.
Benefits:
Operating temperature range:
-40o to +1000oF
Burnished appearance similar
to polished aluminum
Does not comply with FDA
regulations
Dry film thickness 0.8 to 1.2
per coat, two coats recommended
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The Kynar name is recognizable
in the industry, but since Whitford purchased the Kynar 200 Series, it has been
renamed Dykor 200. The primary market for this coating is equipment from the
chemical processing industry. The 200 Series coatings are used to form a "polymer
barrier." Being unaffected by most chemicals and
solvents gives this coating unique properties.
Benefits:
High thermal stability
High dielectric strength
Excellent resistance to weathering, UV rays and nuclear
radiation
Will not support combustion
Abrasion resistance
Thermal stability
