Neoflon ® PCTFE ( Kel-F® )
Material Properties Data Sheet |
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Neoflon PCTFE (polychlorotriflouroethylene) is a melt-processible
fluoropolymer with a continuous-use temperature range from -204°C (-400°F) up to 149°C
(300°F). PCTFE has high compressive
strength, low deformation under load (its cold flow is lower than that of other
flouropolymers), chemical and thermal stability, low gas permeability, high optical
transparency, low flammability, and zero moisture absorption. These properties make PCTFE a preferred product in
applications, such as, gaskets, spacers, valve seats, bearings, sight glasses, and
laboratory ware. PCTFE's relative cost factor
versus PTFE is approximately 6.25 to 1. |
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PCTFE Grade |
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Mechanical Property |
ASTM Method |
Unit |
M-300H |
M-400H |
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Zero Strength Time |
D-1430 |
sec |
200-300 |
300-450 |
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Specific Gravity |
D-792 |
g/cm3 |
2.11-2.17 |
2.11-2.17 |
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Water Absorption, 24 hr. |
D-570 |
% |
0 |
0 |
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Tensile Strength, 23°C |
D-638 |
psi |
4,570-5,430 |
4,860-5,710 |
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Elongation, 23°C |
D-638 |
% |
50-200 |
100-250 |
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Compressive Strength, 23°C at 0.2%
offset |
D-695 |
psi |
5,710-6,430 |
5,280-6,000 |
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Impact Strength, 23°C, Notched Izod |
D-256 |
ft.-lb./in. |
2.5-3.5 |
2.5-3.5 |
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Flexural Modulus |
D-790 |
psi |
228-271X103 |
200-243X103 |
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Durometer Hardness, Shore D |
D-2240 |
D |
85-95 |
85-95 |
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Coefficient of Friction |
D-1894 |
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-- |
-- |
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Deformation Under Load, 25°C, 24 hrs/70
kg |
D-621 |
% |
£ 0.2 |
£ 0.2 |
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Thermal Property |
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Melting Point |
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°C |
210-212 |
210-212 |
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Deflection Temperature (66 psi) |
D-648 |
°C |
126 |
126 |
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Oxygen Index |
D-2863 |
% |
-- |
-- |
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Max. Service Temperature |
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°C |
149 |
149 |
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Thermal Conductivity |
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Btu/ft-hr-°F |
1.45 |
1.45 |
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Flammability |
UL 94 |
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V-O |
V-O |
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Electrical Property |
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Surface Resistivity, 100% R.H. |
D-257 |
ohm-sq |
1015 |
1015 |
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Volume Resistivity, 50% R.H. |
D-257 |
ohm-cm |
2 x 1017 |
2
x 1017 |
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Dielectric Strength (68 mil film) |
D-149 |
V/mil |
500 |
500 |
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Dielectric Constant, 21°C, 103
Hz |
D-150 |
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2.6 |
2.6 |
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Dissipation Factor, 21°C, 103
Hz |
D-150 |
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0.02 |
0.02 |
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Arc Resistance |
D-495 |
sec |
360 |
360 |
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1 Information provided by
Daikin |
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Neoflon is a registered trademark of Daikin |
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