|
PTFE Detailed Properties
(Polytetrafluoroethylene)
|
The
table below lists a generally accepted summary of properties that we
believe to be reliable. Please note that many of these resins
are produced in several varieties and property characteristics may
vary. Therefore, determination of resin is dependent on the
application and this table is only meant to serve as a general
guideline.
|
| PTFE Properties |
ASTM | UNIT |
PTFE |
| MECHANICAL PROPERTIES |
|
| Specific Gravity | D792 |
| 2.18 |
| Elongation | D638 |
% | 200~450 |
| Tensile Strength | D638 |
psi | 2,000~7,000 |
| Flexural Strength | D790 |
psi | no break |
| Compressive Strength | D695 |
| 3,500 |
Tensile Elastic Modulus
(Young's Modulus) | D638 |
psi | 57,000 |
| Flexural Modulus |
D790 | psi |
71,000~85,000 |
| D790 | 103MPa
(103kgf/cm2 |
0.5-0.6
(5.0-6.0) |
| Flex Life |
D2176 | (MIT Cycles) |
>1,000,000 |
| Hardness Durometer |
D636 | Shore D |
D50~65 |
| Coefficient of Friction |
D1984 | Static |
0.02 | | Abrasion Resistance |
Taber | 1000 revs. |
12 | Impact Strength IZOD
73°F/23°C | D256 | notched ft/lbs/in |
3.0 |
| THERMAL PROPERTIES |
|
| Melting Point | |
°C
(°F) | 327
(621) |
Upper Service
Temperature(20,000h) |
| °C
(°F) |
260
(500) | | Flame Rating** |
| UL94 |
VO |
Thermal Conductivity
|
| BTU/hr/ ft2/deg F in |
1.7 | | C117 |
cal/sec/cm2,ºC/cm | 6 x10-4 |
| Heat of Fusion | |
BTU/LB
cal/g | 29-37
n.a. |
| Heat of Combustion | |
BTU/LB
cal/g | 2200
n.a. |
| Low Temperature Embrittlement |
| °C
(°F) |
-268
-450 |
|
ELECTRICAL PROPERTIES |
|
| Dielectric Constant |
|
D150/103Hz |
2.1 |
| |
D150/106Hz |
2.1 |
| Dissipation Factor |
|
D150/103Hz |
n.a |
| |
D150/106Hz |
n.a |
| Dielectric Strength |
D149 |
125MILV.
10MILV. |
500
>1400 |
| Volume Resistivity |
D257 |
ohm-cm |
>1018 |
| Surface Resistivity |
|
ohm/sq. |
>1017 |
|
GENERAL PROPERTIES |
|
Chemical/Solvent
Resistance |
|
|
Excellent |
| Water Absorption, 24h |
|
% |
<0.01 |
| RefractiveIndex |
|
|
1.35 |
Arc Resistivity
|
|
% |
>300 |
| D495 |
sec |
>200 |
|
