Technical Specifications

PROPERTIES OF FLUOROPOLYMERS

PTFE = Polytetrafluoro ethylene
PFA = Perfluoro alkoxy
FEP = Fluorinated ethylene propylene
ETFE = Ethylene tetrafluoro ethylene
PVDF = Polyvinylidene fluorid

Property Method Unit Values (from-to)
Specific gravity ASTM D792 - 2,14 - 2,20
Tensile strength ASTM D1457 N/mm2 20 - 35
Elongation at break ASTM D1457 % 210 - 400
Compressive strength 1% deformation ASTM D695 N/mm2 4,00 - 4,50
Deformation under load 14 N/mm2 for 24hrs ASTM D621(1) % 15-Oct
Flexural strength 0,7 N/mm2 ASTM D790 N/mm2 no break
Impact strength (Izod) 57°C ASTM D256 J/cm 1,10
Impact strength (Izod) 23°C ASTM D256 J/cm 1,60
Impact strength (Izod) 77°C ASTM D256 J/cm 3,30
Hardness ASTM D2240 (shore D) 50 - 60
Friction coefficient - static ASTM D3028 (2) - 0,09
Friction coefficient - dynamic ASTM D3028 (2) - 0,05
PTFE -steel oil lubricated - - 0,02 - 0,06
Working temperature range - °C -460
Increase in volume from room temperature to molten state(340°C) - % 27 - 28
Coefficient of thermal expansion from 25 to 100°C ASTM E831 °C-1 16 x 1-5
Thermal conductivity ASTM D2214 W/mK 0,20
Specific heat 0°C - W/mK 0,96
Specific heat 50°C - W/mK 1,05
Temperature of distortion 0,46 N/mm2 ASTM D648 °C 130 - 140
Temperature of distortion 1,85 N/mm2 ASTM D648 °C 50 - 60
Dielectric strength (short-time air thickness 0,5 mm) ASTM D149 kV/mm 55
Dielectric constant ASTM D150 - 2,10
Dissipation factor ASTM D150 - <0,0002
Volume resistively ASTM D257 Ohm/cm 17-Oct
Surface resistively ASTM D257 Ohm 15-Oct
Arc-resistance ASTM D495 sec OK (4)
Water absorption ASTM D570 % <0,01
Flammability ATB ASTM D635 sec <5,00
Flammability AEB ASTM D635 mm <5,00

Note:    All the values refer to the standard temperature of 23°C unless otherwise specified
1) Superseded standard
(2) Speed 5 m/min; load 1kg/cm2, sliding surface steel roughness Ra = 0,4 " 0,6 micron
(3) 100% relative humidity
(4) Without defects