15% Graphite
- Data Sheet: F1-27
15% Graphite ( (85% Virgin PTFE + 15% Graphite)
PTFE Graphite Compound preferred for parts and components requiring very good mechanical properties.Description
This material offers an excellent combination of properties Typical of the PTFE fluoropolymer resins:
• Service Temperature: offers excellent resistance to continuous service temperatures – working conditions from -100° C (-148°F) up to 250°C (482°F) and, for limited periods, even to higher temperatures; product’s
low temperature resistance allows satisfactory performance down to -200° C (-328°F).
• Chemical resistance: offers high inertness towards nearly all known chemicals. Only attacked elemental alkali
metals, chlorine trifluoride and elemental fluorine at high temperature and pressures might affect properties.
• Solvents resistance: offers insoluble properties in all solvents up to temperatures as high as 300° C (572° F). Certain highly fluorinated oils only swell and dissolve PTFE at temperatures close to the crystalline melting
point.
Graphite Compound enhances some characteristics of virgin PTFE such as wear, compression strength, deformation underload, cold creep, thermal conductivity and dimensional stability.
• Service Temperature: offers excellent resistance to continuous service temperatures – working conditions from -100° C (-148°F) up to 250°C (482°F) and, for limited periods, even to higher temperatures; product’s
low temperature resistance allows satisfactory performance down to -200° C (-328°F).
• Chemical resistance: offers high inertness towards nearly all known chemicals. Only attacked elemental alkali
metals, chlorine trifluoride and elemental fluorine at high temperature and pressures might affect properties.
• Solvents resistance: offers insoluble properties in all solvents up to temperatures as high as 300° C (572° F). Certain highly fluorinated oils only swell and dissolve PTFE at temperatures close to the crystalline melting
point.
Graphite Compound enhances some characteristics of virgin PTFE such as wear, compression strength, deformation underload, cold creep, thermal conductivity and dimensional stability.
Properties
• Improved thermal dimensional stability
• Good chemical stability
• Improved deformation under load
• Good thermal conductivity
• Improved compression strength
• Improved surface hardness
• Low friction behaviour
• Limited wear rate
• Exceptional temperature resistance
• Improved sliding properties
Main applications
PTFE Graphite Compound offers excellent properties of high resistance to deformation, low coefficient of friction, good thermal and electrostatic dissipation in chemical, in automotive industries, in sealing application, in water application (one of the lowest wear rates in fresh water), in mechanical applications.
High wear resistance, chemical resistance, lowest coefficient of friction, self-lubrication and good mechanical properties are suitable for the majority of dry and wet applications.
PTFE Graphite Compound is commonly used in dynamic high speed application thanks to his improved wear life against soft to medium hardness surface.
Typical application in mechanical field for pumps, mixers, compressors, wear bands, in appliances, in automotive lip seals, slides and solenoid valves and where electrical insulation is not required.
Statement on suitability for contact with foodstuff
FDA Approved US Regulation
• Code of Federal regulation 21 CFR Ch.1; section 177.1550 Perfluorocarbon Resins of the Food and Drug Administration/US.
FDA Approved US Regulation
• Code of Federal regulation 21 CFR Ch.1; section 177.1550 Perfluorocarbon Resins of the Food and Drug Administration/US.
EU Regulation
• EU 1935/2004 - 10/2011 on plastic materials and articles to come in contact with food. It is suitable to be used in contact with aqueous, acidic, alcoholic and oily fatty foodstuffs for which stimulants A, B and D2 are used, according to EU Reg.10/2011
• EU 1935/2004 - 10/2011 on plastic materials and articles to come in contact with food. It is suitable to be used in contact with aqueous, acidic, alcoholic and oily fatty foodstuffs for which stimulants A, B and D2 are used, according to EU Reg.10/2011
ISO Regulation
• ISO 10993-5:2009: the material must be considered NOT CITOTOXIC
• ISO 10993-5:2009: the material must be considered NOT IRRITANT
| Property | Method | Units | Specification | |
|---|---|---|---|---|
| Physical | Color | - | - | Black |
| Specific gravity | ASTM D792 | g/cm3 | 2,14 – 2,170 | |
| Water absorption | ASTM D570 | % | 0,05 | |
| Flammability | UL 94 | V-0 | ||
| Mechanical | Tensile strength | ASTM D4745 | MPa | ≥ 16 |
| Elongation | ASTM D4745 | % | ≥ 180 | |
| Hardness | ASTM D2240 | Shore D | ≥ 55 | |
| Ball Hardness | ASTM D785 | MPa | ≥ 25 | |
| Deformation under load (140 Kg/cm2 for 24 hrs. At 23° C) |
ASTM D621 | % | 9,5-11 | |
| Permanent deformation (after 24 hrs. Relaxation at 23° C) |
ASTM D621 | % | 5,5-6,5 | |
| Coefficient of static friction | ASTM D1894 | 0,12-0,14 | ||
| Coefficient of dynamic friction | ASTM D1894 | 0,10-0,12 | ||
| Wear coefficient | - | cm3 min 10-8 Kg m h |
2000-2500 | |
| Thermal | Thermal conductivity | ASTM C177 | W/ m*K | 0,75 |
| Coefficient of linear thermal expansion From 25 to 100 °C |
ASTM D696 | 10-5/°C | 8-13 | |
| Electrical | Volume resistivity | ASTM D257 | Ohm*cm | 107 |
| Surface resistivity | ASTM D257 | Ohm | 106 | |
