Virgin Fine Cut – PN-40, PN-20

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Fluoroplast-4 GOST 10007-80
Fluoroplast-4PN-90 TU 2213-021-13693708-2005
Fluoroplast-4PN-40 TU 2213-021-13693708-2005
Fluoroplast-4PN-20 TU 2213-021-13693708-2005

(-CF2-CF2-)n

Analogs: Teflon 7, Fluon G 163, 190, Algoflon F, Hostaflon TF 1702, Polyflon M 12, 14

It is an easily-lumping white powder with no visible inclusions.

Depending average particles size several grades of PTFE are produced:

Property Grade
F-4 (S, P, PN, O, T) F-4PN-90 F-4PN-40 F-4PN-20
Appearance Easily -lumping white powder with no visible inclusions
Moisture content, %, max 0,02 0,02 0,02 0,02
Density, g/cm3, max 2,18-2,21 (depending on grade) 2,19 2,19 2,19
Tensile strength of unhardened specimen, MPa (kgf/cm2), min 26 (260) – 15 (150)

(depending on grade)

25 (255) 25 (255) 25 (255)
Elongation at break unhardened specimen, %, min 350 – 150

(depending on grade)

350 350 350
Dielectric strength, kV/mm, min 50 – 60

(depending on grade)

60 60
Average particles size, µm 100-180 46-135 21-45 6-20
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