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Virgin Ptfe Datasheet

This document provides the typical properties and values for virgin polytetrafluoroethylene (PTFE) materials as measured using various ASTM testing standards. Some key properties include a specific gravity between 2.14-2.2, a tensile strength of 20-35 N/mm2, an elongation at break of 210-400%, a working temperature range of -200 to +260°C, and excellent resistance to chemicals, moisture and temperature extremes. PTFE materials also exhibit low friction coefficients, high dielectric strength, and arc resistance without defects.

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Felipe Zúñiga Paredes
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176 views1 page

Virgin Ptfe Datasheet

This document provides the typical properties and values for virgin polytetrafluoroethylene (PTFE) materials as measured using various ASTM testing standards. Some key properties include a specific gravity between 2.14-2.2, a tensile strength of 20-35 N/mm2, an elongation at break of 210-400%, a working temperature range of -200 to +260°C, and excellent resistance to chemicals, moisture and temperature extremes. PTFE materials also exhibit low friction coefficients, high dielectric strength, and arc resistance without defects.

Uploaded by

Felipe Zúñiga Paredes
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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VIRGIN PTFE DATASHEET (download PDF)


Typical Values (from-
Properties Method Unit
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) % 10 - 15
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 (shoreD) 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 -200 - +260
Increase in volume from room temperature to molten
- % 27 - 28
state (340°C)
-5
Coefficient of thermal expansion from 25 to 100°C ASTM E831 °C-1 16 x 1
Thermal conductivity ASTM D2214 W/mK 0,20
Specific heat 0°C - KJ/kg.K 0,96
Specific heat 50°C - KJ/kg.K 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 resistivity ASTM D257 Ohm/cm 17
10
Surface resistivity ASTM D257 Ohm 15
10
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 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

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