Virgin Free Flow – F4 A1/ F4 A2
Chemical name: Poly(tetrafluoroethylene) (IUPAC)
Structural formula: (C2F4)n
CAS No. 9002-84-0
HS code 39 0461 0000
Analogs: Teflon PTFE 8, 8A, 8B, 850-A; Algoflon S111, S121, S131; Dyneon TF1620; TF1641, TF1645; Tarflen SG-1, SG2; Fluon G401, G307, G320.
Fluoroplast-4А (F-4 А1 and F-4 A2) is fully fluorinated resin which has an excellent chemical stability,
electrical and mechanical properties. This grade is created for high bulk density, low mold shrinkage
and excellent flow which makes it an ideal for automatic and isostatic molding. F-4А is used for manufacturing of precise size articles by automatic, isostatic and compression molding and ram extrusion. Properties of F-4A are the same as of F-4
Main application: for processing into articles by automatic, compression molding and isostatic pressing, and by ram
extrusion; fabricating of seals, discs, ball valve seats and lab ware, large diameter rods, mechanical bushings, electrical insulators, seal rings.
Properties of F-4А 1
| PROPERTIES | UNITS | TYPICAL VALUE | TEST METHOD |
| Appearance | – | Free-flowing white powder | Visual
(internal method1) |
| Particle size, average diameter (d50) | μm | 500 | Laser-diffraction analyses
(internal method1) |
| Water content, max | % wt | 0.02 | internal method1 |
| Bulk density | g/l | 800±50 | internal method1 |
| Density (SSG) | g/sm3 | 2,15-2,17 | internal method1 |
| Tensile strength at break, min | MPa | 30 | internal method1 |
| Elongation at break, min | % | 350 | internal method1 |
| Dielectric strength (0.100+0.005 mm thickness) at constant voltage, min | kV/mm | 70 | internal method1 |
| Mould shrinkage | % | 1,9-2,4 | internal method1 |
| Melting point | ˚C | 327±5 | ASTM D4894 |
Properties of F-4А 2
| PROPERTIES | UNITS | TYPICAL VALUE | TEST METHOD |
| Appearance | – | Free-flowing white powder | Visual
(internal method1) |
| Particle size, average diameter (d50) | μm | 520 | Laser-diffraction analyses
(internal method1) |
| Water content, max | % wt | 0.02 | internal method1 |
| Bulk density | g/l | 800±50 | internal method1 |
| Density (SSG) | g/sm3 | 2,15-2,17 | internal method1 |
| Tensile strength at break, min | MPa | 25 | internal method1 |
| Elongation at break, min | % | 300 | internal method1 |
| Dielectric strength (0.100+0.005 mm thickness) at constant voltage, min | kV/mm | 70 | internal method1 |
| Mould shrinkage | % | 1,9-2,4 | internal method1 |
| Melting point | ˚C | 327±5 | ASTM D4894 |
1) The parameters are indicated according to the Technical Specifications (TU), because the manufactured products are analyzed in accordance with the TU (internal company standard). The procedure of sample preparation differs from that in ASTM.
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