|
| |
Teflon Typical Technical Data
| ASTM
or UL test |
Property |
PTFE
(unfilled) |
PTFE
(25% glass filled) |
PTFE
(25% carbon filled) |
| PHYSICAL |
| D792 |
Density
(lb/in³)
(g/cm³) |
0.078
2.16 |
0.081
2.25 |
0.075
2.08 |
| D570 |
Water
Absorption, 24 hrs (%) |
<
0.01 |
0.02 |
0.05 |
| MECHANICAL |
| D638 |
Tensile
Strength (psi) |
3,900 |
2,100 |
1,900 |
| D638 |
Tensile
Modulus (psi) |
80,000 |
- |
- |
| D638 |
Tensile
Elongation at Break (%) |
300 |
270 |
75 |
| D790 |
Flexural
Strength (psi) |
No
break |
1,950 |
2,300 |
| D790 |
Flexural
Modulus (psi) |
72,000 |
190,000 |
160,000 |
| D695 |
Compressive
Strength (psi) |
3,500 |
1,000 |
1,700 |
| D695 |
Compressive
Modulus (psi) |
70,000 |
110,000 |
87,000 |
| D785 |
Hardness,
Shore D |
D50 |
D60 |
D62 |
| D256 |
IZOD
Notched Impact (ft-lb/in) |
3.5 |
- |
- |
| THERMAL |
| D696 |
Coefficient
of Linear Thermal Expansion
(x 10-5 in./in./°F) |
7.5 |
6.4 |
6.0 |
| D648 |
Heat
Deflection Temp (°F / °C)
at 264 psi |
132 / 55 |
150 / 65 |
150 / 65 |
| D3418 |
Melting
Temp (°F / °C) |
635
/ 335 |
635
/ 335 |
635
/ 335 |
| - |
Max
Operating Temp (°F / °C) |
500
/ 260 |
500
/ 260 |
500
/ 260 |
| C177 |
Thermal
Conductivity
(BTU-in/ft²-hr-°F)
(x 10-4 cal/cm-sec-°C) |
1.70
5.86 |
3.1
10.6 |
4.5
15.5 |
| UL94 |
Flammability
Rating |
V-O |
V-O |
V-O |
| ELECTRICAL |
| D149 |
Dielectric
Strength (V/mil) short time, 1/8" thick |
285 |
- |
- |
| D150 |
Dielectric
Constant at 1 MHz |
2.1 |
2.4 |
- |
| D150 |
Dissipation
Factor at 1 MHz |
<
0.0002 |
0.05 |
- |
| D257 |
Volume
Resistivity (ohm-cm)at 50% RH |
>
1018 |
>
1015 |
104 |
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