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Teflon Properties®

The versatility of Teflon® coatings come from their tensile strength, chemical resistance, thermal tolerances, and electric & mechanical properties. Teflon® coatings are suitable for metals, non-metals, and even food-safe applications.

For pricing on our Teflon® coating products, or to simply learn more about them, submit a free request for quote today.


Mechanical Properties

Property ASTM Standard Unit Teflon® PTFE Teflon® FEP Teflon® PFA Teflon® ETFE
Specific Gravity D792 - 2.15 2.15 2.15 1.76
Tensile Strength D1457, D1708, D638 MPa 21-35 23 25 40-47
psi 3,000-5,000 3,400 3,600 5,800-6,700
Elongation D1457, D1708, D638 % 300-500 325 300 150-300
Flexural Modulus D790 MPa 500 600 600 1,200
psi 72,000 85,000 85,000 170,000
Folding Endurance D2176 (MIT) >106 5-80 x 103 10-500 x 103 10-27 x 103
cycles
Impact Strength D256 J/m 189 No break No break No break
ft.lb/in 3.5
Hardness D2240 Shore D 50-65 56 60 72
pencil HB HB
Abrasion Resistance
• Bell Abrasion (1) - g/µm 85 - - -
• Sliding Arm (2) - mg 7.9-9.7 11.1-15.2 - 13.4
• Tabor Abrasion (3) - mg 12 14.8 - -
Scratch Resistance - - - - - -
scratch master - - - - - -
• initial (4) - kg 5.7-7.0 5.1-11.4 - -
• complete (5) - kg 7.3-10.7 8.5-13.2 - -
Coefficient of Friction D1894 - - - - -
• static - - 0.12-0.15 0.12-0.20 0.2 0.24-0.50
• dynamic - - 0.05-0.10 0.08-0.3 - 0.3-0.4
Contact Angle - - - - - -
• water - degree 104° -111° 95°-105° 104°-111° 90°-100°



Notes:
1. Bell Abrasion Tester: grams abrasive/micrometers
2. Sliding Arm Test: 1,000 cycles, 500 gr load, 400 Emery paper, 35.5 sq. cm surface
3. Tabor Abrasion: Cs 17 wheel, 1 kg load, 1,000 cycles, weight loss in mg
4. Scratch Master: initial = first sign of substrate
5. Scratch Master: complete = total removal of film
6. Salt Spray Resistance: 5% NaCl @ 35°C/95°F, hours to failure
7. Detergent Resistance: hours to failure
8. Dielectric Strength: 100 micrometers film



The values shown in this table represent average experiences from numerous testing sources and are not intended to be specifications. These values will vary depending upon the individual compositions of the primers and topcoats and the systems used. For further information on the properties of these coating systems, and examples of how they have led to the development of new products, increased production rates and resultant cost savings, you should consult DuPont or a Licensed Industrial Applicator.

All technical advice, application suggestions, recommendations and services are rendered by the Seller gratis. They are based on technical data which the Seller believes to be reliable and are intended for use by persons having skill and know-how, at their own discretion and risk. Seller assumes no responsibility for results obtained or damages incurred for their use by Buyer in whole or in part. Such technical advice, application suggestions, recommendations or services are not to be taken as a license to operate under, or intended to suggest infringement of, any existing patent.



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Thermal Properties

Property ASTM Standard Unit Teflon® PTFE Teflon® FEP Teflon® PFA Teflon® ETFE
Melting Point D3418 °C 327 260 305 267
°F 621 500 582 512
Cure Temperature    °C 380-430 360-390 380-400 300-325
°F 715-805 680-735 715-750 575-615
Max. Use Temperature
• Continuous - °C 290 205 260 150
°F 550 400 500 300
Intermittent - °C 315 230 290 200
°F 600 450 550 390
Flame Rating** UL94   V0 V0 V0 V0
Limiting Oxygen Index D2863 % >95 >95 >95 30-36
Heat of Combustion D240 MJ/kg 5.1 5.1 5.3 13.7
Btu/lb 2,200 2,200 2,300 5,900
Thermal Conductivity - Btu.in/h.ft2.°F 1.7 1.4 1.3 1.65
W/m-k 0.25 0.20 0.19 0.24
** Statements regarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions.

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Chemical Properties

Property ASTM Standard Unit Teflon® PTFE Teflon® FEP Teflon® PFA Teflon® ETFE
Property
Chemical/Solvent Resistance
D543   Excellent Excellent Excellent Excellent
Water Absorption, 24 h D570 % <0.01 <0.01 <0.03 <0.03
Salt Spray Resistance (6) B-117          
on aluminum     Hours 744+ 744+ 1000 1000
on steel   Hours 192      
Detergent Resistance (7)            
on aluminum   Hours 264 744    
on grit-blasted aluminum   Hours 624 600    
on grit-blasted steel   Hours 24 480    
Weather Resistance Florida Exposure Years Unaffected 20 20 10 15
 

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Electrical Properties

Property ASTM Standard Unit Teflon® PTFE Teflon® FEP Teflon® PFA Teflon® ETFE
Dielectric Constant D150 1 MHz 2.1 2.1 2.1 2.6
Dielectric Strength (8) D149 V/µm 18 53 80 79
Dissipation Factor D150 1 MHz <0.0001 0.0006 0.0001 0.007
Arc Resistance D495 sec >300 >300 >180 122
Volume Resistivity D257 ohm.cm >1018 >1018 >1018 >1017
Surface Resistivity D257 ohm/sq >1018 >1016 >1017 >1015
Teflon® is a registered trademark of DuPont.
* This data reproduced from published Dupont literature H-75151

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