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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
(psi)

21-34
(3,000-5,000)

23
(3,400)

25
(3,600)

40-46
(5,800-6,700)

Elongation

D1457, D1708, D638

%

300-500

325

300

150-300

Flexural Modulus

D790

MPa
(psi)

496
(72,000)

586
(85,000)

586
(85,000)

1,172
(170,000)

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
(3.5)

No Break

No Break

No Break

Hardness

D2240

Shore D pencil

50-65 HB

56
HB

60

72

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
 


13.4
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
  6. Salt Spray Resistance: 5% NaCl at 35°C/95°F, hours to failure
  7. Detergent Resistance: hours to failure
  8. Dielectric Strength: 100 micrometers film
The values shown 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, consult DuPont or a Licensed Industrial Applicator.

Note: 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
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Thermal Properties

Property

ASTM Standard

Unit

Teflon®
PTFE

Teflon® FEP

Teflon® PFA

Teflon® ETFE

Melting Point

D3418 ]

°C
°F

327
(621)

260
(500)

306
(582)

267
(512)

Cure
Temperature

 

°C
°F

379-429
(715-805)

360-385
(680-725)

379-399
(715-750)

302-323
(575-615)

Max. Use Temperature
- Continuous

- Intermittent
 


°C
°F
°C
°F


290
550
315
600


205
400
230
450


260
500
290
550


150
300
200
390

Flame Rating**

UL94

 

V0

V0

V0

V0

Limiting Oxygen Index

D2863

%

>95

>95

>95

30-36

Heat of Combustion

D240

MJ/kg
(Btu/lb)

5.1
(2,200)

5.1
(2,200)

5.3
(2,300)

13.7
(5,900)

Thermal Conductivity
 
Btu.in/h.ft².°F
W/m.k
1.7
0.25
1.4
0.20
1.3
0.19
1.65
0.24

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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 (6)
-on aluminum
-on steel

B-117

 
Hours
Hours

 
744+
192

 
744+

 
1000

 
1000

Detergent Resistance (7)
-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


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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

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

>10 18

>10 18

>10 18

>10 17

Surface Resistivity

D257

ohm/sq

>10 18

>10 16

>10 17

>10 15


* 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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Water 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. inch or g/625 sq. cm (24 hr)

Acetic Acid

35°

0.41

Acetone

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


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Water Vapor Transmission Rate of Teflon® FEP film at 40°C/104°F per ASTM E-96 (modified)

Thickness in mils (1 mil=25.4 micrometer)
Note: values are averages only not for specification purpose


Water Vapor Transmission Rate of Teflon® FEP film at 40°C/104°F per ASTM E-96 (modified)

Temperature in °C reciprocal absolute scale
Note: values are averages only not for specification purpose
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