Fluoropolymer Properties
Material Properties & Comparisons
Properties
Test Method / Unit
FEP
PFA
PTFE
M E C H A N I C A L
Specific Gravity
D792
2.15
2.15
2.18
Tensile Strength (psi)
D638
2,800 ~ 5,000
4,000 ~ 4,500
2,000 ~ 7,000
Flexural Strength (psi)
D790
No Break
No Break
No Break
Flex Life
D2176
5,000 ~ 80,000
10,000 ~ 500,000
>1,000,000
HardnessDurometer   Shore D
D636
D55
D55 ~ 60
D55 ~ 60
Coefficient of Friction
On steel
.05
.025
0.2
T H E R M A L
Shrink Temperature
°F°C
300°149°
300°149°
625°327°
Service Temperature
°F°C
392°200°
500°260°
500°260°
Flame Rating
UL 94
V-0
V-0
V-0
Melting Point
°F
500°260°
582°305°
621°327°
Low Temperature Embrittlement
°F°C
-450°-268°
-450°-268°
-450° -268°
E L E C T R I C A L
Dielectric Constant
D150/103Hz
2.1
2.1
2.1
D150/106Hz
2.1
2.1
2.1
G E N E R A L
Chemical/Solven Resistance
D543
Excellent
Excellent
Excellent
Water Absorption, 24h
%
<0.01
<0.03
<0.01
Refractive Index
-
1.338
1.34
1.35
Properties
Test Method / Unit
FEP
PFA
PTFE


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