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PROPERTIES OF PFA Tubing
|
Property
|
Method No.
|
Units
|
PTFE
|
FEP
|
PFA
|
ETFE
|
PVDF
|
|
Specific Gravity
|
D792 |
- |
2.17 |
2.15 |
2.15 |
1.74 |
1.78 |
|
Melting Point
|
D2236 |
deg F
deg C |
621
327 |
518
270 |
581
305 |
527
275 |
352
177 |
|
Tensile Strength
|
D638
D1708
D1457 |
psi
MPa |
2500
17 |
3400
23 |
4,000
27 |
6,960
48 |
7,830
54 |
|
Yield Strength
|
D638 |
psi |
1,450 |
1,740 |
2,250 |
3,480 |
6,670 |
|
Elongation
|
|
% |
200-500 |
250-350 |
300 |
200-500 |
20-150 |
|
Tensile Modulus
|
D638 |
ksi |
87 |
72.5 |
101.5 |
217.5 |
348 |
|
Flex Modulus
|
D790 |
psi x 1000
MPa |
98
675 |
101.5
700 |
95
655 |
203
1400 |
333.5
2300 |
|
Izod Impact
|
D256 |
ft-lbs/in
J/m |
3.2
173 |
No Break |
No Break |
No Break |
2-4 |
|
Hardness |
D2240 |
Shore D |
60 |
57 |
62 |
75 |
79 |
|
HDT, @ 66 psi
|
D648 |
deg F |
250 |
158 |
164 |
219 |
300 |
|
HDT, @ 264 psi
|
D648 |
deg F |
122 |
129 |
118 |
160 |
239 |
|
Max. Cont Use Temp |
|
deg F
deg C |
500
260 |
400
204 |
500
260 |
300
149 |
|
|
*Flame Rating |
UL 94 |
|
VO |
VO |
VO |
VO |
|
|
Limiting Oxygen Index |
D2863 |
% |
>95 |
>95 |
>95 |
30-36 |
|
|
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 |
|
|
Dielectric Constant
|
D150 |
1 MHZ |
2.1 |
2.1 |
2.1 |
2.6 |
|
|
**Dielectric Strength
|
D149 |
Volts/µm |
18 |
53 |
80 |
79 |
|
|
Resistivity - Volume |
D257 |
ohm-cm |
>1018 |
>1018 |
>1018 |
>1017 |
|
*This numerical flame spread rating is not
intended to reflect hazards presented by this or
any other material under actual fire conditions.
**Dielectric Strength values are valid across
100 micron film thickness. |
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