| Chemical Designation |
Polytetrafluoroethylene Pplyimidie
|
|||
| DIN Abbreviation |
PTFE + Pi
|
|||
| Colour, Filler |
light brown, polymide P84
|
|||
| Stock Availabilty | ||||
| Main Characteristics | ||||
| Preferred Fields | ||||
| Applications | ||||
| MECHANICAL | ||||
| Properties |
Unit
|
Test method
DIN ASTM |
||
| Density |
g/cm3
|
53 479
|
1.85
|
|
| Tensile strength/ yield |
MPa
|
53 455
|
||
| Tensile strength/ break |
MPa
|
53 455
|
15
|
|
| Elongation / break |
%
|
53 455
|
200
|
|
| Modules of elasticity/tension |
MPa
|
53 457
|
||
| Modules of elasticity/flexure |
MPa
|
53 457
|
||
| Ball indentation hardness |
MPa
|
53 456
|
65
|
|
| Impact strength (charpy) |
kJ/m2
|
53 453
|
no br.
|
|
| Creep rupture strength /1000 hrs static load |
MPa
|
|||
| Time yield 1% elongation/1000hrs |
MPa
|
|||
| Coefficient of friction/ hardened & ground steel |
-
|
0.15 to 0.20
|
||
| Wear/ as above |
mm/km
|
|||
| THERMAL | ||||
| Properties |
Unit
|
Test method
DIN ASTM |
||
| Crystaline melting point |
ºC
|
53 736
|
327
|
|
| Glass transition temperature |
ºC
|
53 736
|
-20
|
|
| Heat distortion temperature | Method A |
ºC
|
ISO 75
|
|
| Method B |
ºC
|
ISO 75
|
||
| Field33 | ||||
| Maximum service temperature | short term |
ºC
|
260
|
|
| long term |
ºC
|
2600.25
|
||
| Coefficient of thermal conductivity |
W/(m.K)
|
1
|
||
| Specific heat |
J(g.K)
|
6
|
||
| Coefficient of thermal expansion |
10-5/K
|
|||
| ELECTRICAL | ||||
| Properties |
Unit
|
Test method
DIN ASTM |
||
| Dielectric constant at 105 HZ |
53 483
|
2.1
|
||
| Dielectric loss factor 105 HZ |
S.cm
|
53 483
|
||
| Specific volume resistance |
S
|
53 482
|
1.00E+18
|
|
| Surface resistance |
53 482
|
|||
| Dielectric strength 1 mm |
KV/mm
|
53 481
|
||
| Tracking resistance |
53 480
|
|||
| MISCELLANEOUS | ||||
| Properties |
Unit
|
Test method
DIN ASTM |
||
| Moisture absorption |
%
|
53 714 |
0.5
|
|
| Water absorption at saturation at 23 §C |
%
|
53 495 |
0.7
|
|
| Resistance to hot water, washing soda |
limited resistant
|
|||
| Flammibilty | UL 94 |
VO
|
||
| Resistance to weathering |
resistant,
|
|||
| Compliance | ||||