Technical Properties of Non-Stick coatings

Technical Properties of TEFLON®

MECHANICAL PROPERTIES
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.
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

Elongation
D1457
D1708
D638

%

300-500

325

300

150-300
Flexural Modulus D790 MPa
(psi)
500 600 600 1.200
Folding Endurance D2176 (MIT)
cycles
>106 5-80 x 103 10-500 x 103 10-27 x 103
Impact Strength D256 J/m
(ft·lb/in)
189 No break No break No break
Hardness D2240 Shore D
pencil
50-65
HB
56
HB
60 HB 72 HB
Abrasion Resistance
– Bell Abrasion (1)
– Sliding Arm (2)
– Tabor Abrasion (3)
 
 
g/µm
mg
mg

85
7,9-9,7
12
 

11,1-15,2
14,8



  —
1,.4
Scratch Resistance
scratch master
–initial (4)
–complete (5)

 
kg
kg

5,7-7,0
7,3-10,7
 
5,1-11,4
8,5-13,2




Coefficient of Friction
–static
–dynamic
D1894
 
0,12-0,15
0,05-0,10
  0,12-0,20
0,08-0,3
  0,2
  0,24-0,50
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, 1kg load, 1,000 cycles, weight loss in mg
4. Scratch Master: initial = first sign of substrate
5. Scratch Master: complete = total removal of film


THERMAL PROPERTIES

Property

ASTM Standard Unit Teflon® PTFE Teflon® FEP Teflon® PFA Teflon® ETFE
Melting Point D3418 °C 327 260 305 267
Cure Temperature °C 380-430 360-390 380-400 300-325
Max. Use
Temperature
°C 270 205 260 150
Intermittent
üzemi hőfok
°C Please contact us!
Flame Rating** UL94   — VO VO VO VO
Limiting Oxygen Index D2863 % >95 >95 >95 30-36

Heat of Combustion

D240 MJ/kg
(Btu/lb)
5,1 5,1 5,3 13,7
Thermal Conductivity  — Btu·in/h·ft2·°F
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.

CHEMICAL PROPERTIES
Property ASTM Standard Unit Teflon® PTFE Teflon® FEP Teflon® PFA Teflon® ETFE
Chemical/Solvent Resistance D543   — Excellent Excellent Excellent Excellent
Water Absorption, 24 h D570 % <0,01 <0,01 <0,03 <0,03
Salt Spray Resistance (1)
– on aluminum
– on steel
B-117  
Hours
Hours
 
744+
192

744+
 
1000
 
1000
Detergent Resistance (2)
-on aluminum
-on grit-blasted aluminum
-on grit-blasted steel
—   
Hours
Hours
Hours
 
264
624
24
 
744
600
480
 


 


Weather Resistance Florida Exposure Years Unaffected 20 20 10 15
Notes:
1. Salt Spray Resistance: 5% NaCl at 35°C/95°C, hours to failure.
2. Detergent Resistance: hours to failure.

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
Dielectic Strength** 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
** Dielectric Strength: 100 micrometers film


Vapor Transmission Rates of TEFLON® FEP Film, 25 µm (1 mil) thickness/per ASTM E-96 (modified)
Values measured on thicker specimens and converted to 25 µm (1 mil)

Vapor

Temperature, °C g/100 sq in. or g/625 sq cm (24 Hours)
Acetic Acid 35° 0,41
Aceton 35° 0,95
Acetophenone 25° 0,50
Benzene 35° 0,64
Carbon Tetrachloride 35° 0,31
Etyl Acetate 35° 0,76
Hexane 35° 0,56
Hydrochloric Acid, 20% 25° <0,01
Piperidine 25° 0,04
Red Fuming Nitric Acid 25° 7,5-1,4
Sodium Hydroxide, 50% 25° <0,01
Sulfuric Acid, 98% 25° 0,00001
Water 39,5° 0,40



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 from their use by Buyer in wholer 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.


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 from their use by Buyer in wholer 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.