| TEFLON PROPERTIES : THERMAL |
| Properties |
ASTM |
PTFE |
PFA |
FEP |
ETFE |
ECTFE |
| Maximum Service Temp. |
°C |
260° |
260° |
200° |
150° |
170° |
| °F |
500° |
500° |
392° |
302° |
340° |
| Melting point |
°C |
327° |
305° |
260° |
267° |
240° |
| °F |
621° |
582° |
500° |
512° |
464° |
| Flame Rating |
UL 94 |
V-O |
V-O |
V-O |
V-O |
V-O |
| Minimum Service Temp. |
°C |
-240° |
-200° |
-240° |
-190° |
-76° |
| °F |
-400° |
-328° |
-400° |
-310° |
-104° |
|
|
PTFE |
PFA |
FEP |
ETFE |
ECTFE |
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| TEFLON PROPERTIES : MECHANICAL |
| Properties |
Units |
PTFE |
PFA |
FEP |
ETFE |
ECTFE |
| Specific Gravity |
D-792 |
2.18 |
2.15 |
2.15 |
1.74 |
1.68 |
| Tensile Strength (psi) |
D-638 |
2,000-7,000 |
4,000-4,500 |
2,800-5,000 |
6,100-6,800 |
6,000-7,800 |
| Flexural Strength (psi) |
D-790 |
no break |
no break |
no break |
5,500 |
7,000 |
| Compressive Strength |
D-695 |
3,500 |
|
2,200 |
2,500 |
1,276-1,711 |
| Flex Life |
D-2176 |
greater then 1,000,000 |
10,000 up to 500,000 |
5,000 up to 80,000 |
10,000 up to 27,000 |
N/A |
| Hardness Durometer Shore D |
D-636 |
D 50-65 |
D 55-60 |
D 55 |
D 75 |
D 75-90 |
| Coefficient of Friction |
On Steel |
.02 |
.04 |
.04 |
.06 |
.19 |
| Abrasion Resistance |
Taber |
12 |
9-17 |
14-20 |
N/A |
.005 |
|
|
PTFE |
PFA |
FEP |
ETFE |
ECTFE |
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| TEFLON PROPERTIES : ELECTRICAL |
| Properties |
Units |
PTFE |
PFA |
FEP |
ETFE |
ECTFE |
| Dielectric Constant |
D150 / 103Hz |
2.1 |
2.1 |
2.1 |
2.6 |
2.5 |
| D150 / 106Hz |
2.1 |
2.1 |
2.1 |
2.6 |
2.6 |
| Dielectric Strength 10 mil Film |
D-149 |
>1,400 |
>2,000 |
>2,000 |
1,600 |
N/A |
| Volume Resistivity ohm-cm |
D-257 |
>1,018 |
>1,018 |
>1,018 |
>1,016 |
>1,016 |
| Surface Resistivity ohm-cm |
D-257 |
>1,017 |
>1,017 |
>1,017 |
>1,015 |
>1,014 |
|
|
PTFE |
PFA |
FEP |
ETFE |
ECTFE |
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| TEFLON PROPERTIES : GENERAL |
| Properties |
Unit |
PTFE |
PFA |
FEP |
ETFE |
ECTFE |
| Chemical- Solvent Resistance |
D-543 |
Excellent |
Excellent |
Excellent |
Excellent |
Excellent |
| Water Absorption |
24hr / % |
<.01 |
<.03 |
<.01 |
<.03 |
<.01 |
| Refractive Index |
|
1.35 |
1.34 |
1.338 |
1.4 |
1.447 |
| Limiting Oxygen Index |
D-2863 |
> 95 min |
95 min |
95 min |
30-46 min |
52 min |
|
|
PTFE |
PFA |
FEP |
ETFE |
ECTFE |
