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Fluorosint® 500 (PTFE+Mica)
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- Extremely high maximum operating temperature in air
- Excellent chemical and hydrolysis resistance
- Good resistance to wear
- Low friction coefficient;
- Very good dimensional stability
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Its resistance to deformation under load is nine times greater than virgin PTFE (tested in compliance with ASTM D 621)
Compressive stress 14 (MPa at 50 °C).
The coefficient of linear thermal expansion is very close to the values of aluminium and it is equal to 1/5 the virgin PTFE.
It is remarkably harder than virgin PTFE and offers enhanced resistance to wear and low friction.
It also does not have an abrasive effect on the portion of materials it comes into contact with.
Specifications
- High maximum operating temperature in air (+260 °C continuously)
- Excellent chemical and hydrolysis resistance
- Good resistance to wear
- Low friction coefficient
- Very good dimensional stability
- Good electrical insulating properties
- remarkable resistance to UV radiation and weathering
- Low intrinsic flammability
| Properties | ISO / (IEC) standard | Unit of measurement | Value |
| General properties | |||
| Colour | Ivory | ||
| Density | 1183-1 | g/cm3 | 2.32 |
| Water absorption: | |||
| - after 24/96 h immersion in | 62 | mg | -/- |
| water at 23 °C | |||
| 62 | % | -/- | |
| - at saturation in air of 23 °C / 50% RH | -- | % | <0.1 |
| - at saturation in water of 23 °C | -- | % | 1.5-2.5 |
| Thermal properties | |||
| Melting temperature | 11357-1/-3 | °C | 327 |
| Glass transition temperature | 11357-1/-2 | °C | -- |
| Thermal conductivity at 23 °C | - | W (K.m) | 0.77 |
| Average coefficient of linear thermal expansion: | |||
| - average value between 23 and 100 °C | - | m/(m.K) | 50x10-6 |
| - average value between 23 and 150 °C | - | m/(m.K) | 55x10-6 |
| - average value above 150 °C | - | m((m.K) | 85x10-6 |
| Deflection temperature under load: | |||
| - method A: 1.8 MPa | 75-1/-2 | °C | 130 |
| Max. operating temperature in air: | |||
| - for short periods | - | °C | 280 |
| - continuously: min. 20,000 h | - | °C | 260 |
| Min. operating temperature | -20 | ||
| Flammability: | |||
| "Oxygen index" | 4589-1/-2 | % | ≥95 |
| - according to method UL 94 | - | - | V-0/V-0 |
| (1.5/3 mm thickness) | |||
| Mechanical properties at 23 °C | |||
| Tension test | |||
| - Tensile stress at yield / Ultimate tensile strenght | 527-1/-2 | MPa | 7/- |
| - Tensile strain at break | 527-1/-2 | % | 15 |
| - Tensile modulus of elasticity | 527-1/-2 | MPa | 1750 |
| Compression test | |||
| - Compressive stress at 1% nominal strain | 604 | MPa | 12 |
| - Compressive stress at 2% nominal strain | 604 | MPa | 19 |
| Charpy impact strength - unnotched | 179-1/1eU | kJ/m2 | 8 |
| Charpy impact strength - notched | 179-1/1eA | kJ/m2 | 4.5 |
| Ball indentation hardness | 2039-1 | N/mm2 | 60 |
| Rockwell hardness | 2039-2 | - | R 55 |
| Electrical properties at 23 °C | |||
| Dielectric strength | (60243-1) | kV/mm | 11 |
| Volume resistivity | (60093) | Ohm.sq | >1013 |
| Surface resistivity | ANSI/ESD | Ohm.sq | >1013 |
| STM 1111 | |||
| Relative permittivity: | 60250 | -- | -- |
| at 100 Hz | |||
| at 1 MHz | 60250 | -- | 2.85 |
| Dielectric dissipation factor. tan ‰: | 60250 | -- | -- |
| at 100 Hz | |||
| at 1 MHz | 60250 | -- | 0.008 |
| Comparative Tracking Index | 60112 | -- | -- |
| (CTI) |
Although the information provided in this product data sheet is confirmed by reliable research, POLITECNICA CETAI shall not take any responsibility for the application, processing or use of such information.
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