ASTM Method

Unit

Teflon® PTFE

Teflon® FEP

Teflon® PFA

Teflon® ETFE

Non-Stick

none

---

Excellent

Excellent

Excellent

Good

Abrasion Resistance

none

---

Fair

Good

Very Good

Excellent

Chemical Resistance

none

---

Good

Excellent

Excellent

Excellent

Max Use Temperature

°F
°C

°F
°C

550
290

600
315

400
205

450
230

500
260

550
290

300
150

390
200

Melting Point

D3418

°F
°C

621
327

500
260

582
305

512
267

Specific Gravity

D792

2.15

2.15

2.15

1.76

Coefficient of Friction

D1894

Static

Dynamic

.12 - .15

.05 - .10

.12 - .20

.08 - .30

.20

.24 - .50

.30 - .40

Hardness

D2240

Shore D

50 - 65

56

60

72

Tensile Strength

D638

Mpa

21 - 35

23

25

40 - 47

Elongation

D638

%

300 - 500

325

300

150-300

Flexural Modulus

D790

Mpa

500

600

600

1200

Thermal Conductivity

see note 1

1.7

1.4

1.3

1.65

ielectric Strength

D149

V/µm

18

53

80

79

Dielectric Constant

D150

1 MHz

2.1

2.1

2.1

2.6

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

Weather Resistance

Florida Exposure

years unaffected

20

20

10

15

Water Absorption

D570

%

<.01

<.01

<.03

<.03

Contact Angle

water °

104-111

95-105

104-111

90-100