|Specific gravity||ASTM D792||g/cm3||2.14 – 2.18|
|Coefficient of linear thermal expansion||ASTM D696||1/oC * 10-5||12 – 13|
|Hardness Shore D||ASTM D2240||Points||> 58|
|Tensile strength||ASTM D4894/D4745||N/mm2||> 24|
|Elongation at break||ASTM D4894/D4745||%||> 250|
|Compressive strength at 1% deformation||ASTM D695||N/mm2||4 – 5|
|Deformation under load (24 h 13.7 N/mm2 23°C||ASTM D621||%||14 – 17|
|Permanent deformation (as above, after 24-h relaxation)||ASTM D621||%||7 – 9|
|Kinetic coefficient of friction||ASTM D1894||/||0.06|
|Wear factor at PV 100||ASTM D3702||cm3. min . 10-8
Kg . m . h
- Excellent resistance to continuous service temperature from -200oC to +260oC .
- PTFE Processes a high inertness towards nearly all known chemicals. It is only attacked by elemental alkali metals, chlorine trifluoride and elemental fluorine at high temperatures and pressure.
- PTFE is insoluble in all solvents up to temperatures as high as 300oC ( 572oF). Certain highly fluorinated oils only swell and dissolve PTFE at temperatures close to the crystalline melting point.
- ( Code of federal regulation 21 CFR Ch.1 revised as of April 1st 1999 edition), Sections 175.105,-175.300,-176.170,176.180,-177.1250,-177.1550,-177.2600,-178.3570.”Perfluorocarbon Resins” of the Food and Drug Administration.