Teflon™, PTFE 7B Material Information
Specifications
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Specific Gravity | 2.16 g/cc | 2.16 g/cc | ASTM D4894 |
| Bulk Density | 0.330 g/cc | 0.0119 lb/in³ | ASTM D4894 |
| Water Absorption | <= 0.010 % | <= 0.010 % | 24 hours; ASTM D570 |
| Particle Size | 24 µm | 24 µm | ASTM D4894 |
| Linear Mold Shrinkage | 0.044 cm/cm | 0.044 in/in | at preform pressure of 35 Mpa; ASTM D4894 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Rockwell R | 58 | 58 | ASTM D785 |
| Hardness, Shore A | 98 | 98 | ASTM D2240 |
| Hardness, Shore D | 50-65 | 50-65 | ASTM D2240 |
| Tensile Strength, Ultimate | 36.5 MPa | 5290 psi | ASTM D4894 |
| Elongation at Break | 400% | 400% | ASTM D4894 |
| Flexural Modulus | 0.496 GPa | 71.9 ksi | ASTM D790 |
| Poissons Ratio | 0.46 | 0.46 | Approaches a limit of 0.50 at higher temperature |
| Izod Impact, Notched | 1.89 J/cm | 3.54 ft-lb/in | ASTM D256 |
| Coefficient of Friction | 0.050 – 0.10 | 0.050 – 0.10 | ASTM D 1894 |
| Coefficient of Friction, Dynamic | 0.1 | 0.1 | V = 10 fpm; P= 800 – 1000 psi |
| Coefficient of Friction, Dynamic | 0.13 | 0.13 | V = 100 fpm; P= 80 – 100 psi |
| Coefficient of Friction, Static | 0.050 – 0.080 | 0.050 – 0.080 | 500 psi |
| K (wear) Factor | 5040 x 10-8 mm³/N-M | 2500 x 10-10 in³-min/ft-lb-hr | Unlubricated – vs – Soft Carbon Steel |
| Limiting Pressure Velocity | 0.0420 MPa-m/sec @ Temp 21 -27°C | 1200 psi-ft/min @ Temp 69.8 – 80.6°F | At 10 fpm |
| Limiting Pressure Velocity | 0.0631 MPa-m/sec @ Temp 21 -27°C | 1800 psi-ft/min @ Temp 69.8 – 80.6°F | At 100 fpm |
| Limiting Pressure Velocity | 0.0876 MPa-m/sec @ Temp 21 -27°C | 2500 psi-ft/min @ Temp 69.8 – 80.6°F | At 1000 fpm |
| Taber Abrasion, mg/1000 Cycles | 8.9 | 8.9 | 1000 cycles; CS-17F wheel |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Volume Resistivity | >= 1.00e+18 ohm-cm | >= 1.00e+18 ohm-cm | ASTM D257 |
| Surface Resistivity per Square | >= 1.00e+18 ohm | >= 1.00e+18 ohm | ASTM D257 |
| Dielectric Constant | 2.1 @ Frequency 1e+6 Hz | 2.1 @ Frequency 1e+6 Hz | ASTM D150 |
| Dielectric Strength | 18.0 kV/mm | 457 kV/in | 100 micrometers film; ASTM D149 |
| Dissapation Factor | <= 0.00010@ Frequency 1e+6 Hz | <= 0.00010@ Frequency 1e+6 Hz | ASTM D150 |
| Arc Resistance | >= 300 sec | >= 300 sec | ASTM D495 |
| Specific Heat Capacity | 1.40 J/g-°C @ Temp 20°C | 0.287 BTU/lb-°F @ Temp 68°F |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, Linear | 112 µm/m-°C @ Temp -100 – 25.0°C | 62.2 µin/in-°F @ Temp -148 – 77°F | |
| CTE, Linear | 124 µm/m-°C @ Temp 25 – 100°C | 68.9 µin/in-°F @ Temp 77 – 212°F | |
| CTE, Linear | 220 µm/m-°C @ Temp 25 – 300°C | 122 µin/in-°F @ Temp 77 – 572°F | |
| CTE, Linear | 790 µm/m-°C @ Temp 20 – 25°C | 439 µin/in-°F @ Temp 68 – 77°F | Large volume change in the 18-25°C transition range |
| Specific Heat Capacity | 1.20 J/g-°C @ Temp 40°C | 0.287 BTU/lb-°F @ Temp 104°F | |
| Specific Heat Capacity | 1.30 J/g-°C @ Temp 150°C | 0.287 BTU/lb-°F @ Temp 302°F | |
| Specific Heat Capacity | 1.40 J/g-°C @ Temp 20°C | 0.287 BTU/lb-°F @ Temp 68°F | |
| Specific Heat Capacity | 1.50 J/g-°C @ Temp 260°C | 0.287 BTU/lb-°F @ Temp 500°F | |
| Thermal Conductivity | 0.250 W/m-K | 1.74 BTU-in/hr-ft²-°F | |
| Thermal Conductivity | 0.300 W/m-K @ Temp 20 – 260°C | 2.08 BTU-in/hr-ft²-°F @ Temp 68 – 500°F | |
| Melting Point | 317 – 337 °C | 603 – 639 °F | ASTM D4894 |
| Maximum Service Temperature, Air | 260 °C | 500 °F | Retains useful mechanical properties |
| Minimum Service Temperature, Air | -268 °C | -450 °F | Retains useful mechanical properties |
| Minimum Service Temperature, Air | -79.0 °C | -110 °F | Remains highly flexible |
| Flammability, UL94 | V-0 | V-0 | |
| Oxygen Index | >= 95 % | >= 95 % | ASTM D2863 |
| Processing Properties | Metric | English | Comments |
|---|---|---|---|
| Processing Temperature | 379 – 429 °C | 714 – 804 °F | Cure Temperature |
| Descriptive Properties | Metric | English | Comments |
|---|---|---|---|
| 20% Hydrochloric Acid Transmission, g/100sq in. | <0.01 | ||
| 50% Sodium Hydroxide Transmission, g/100sq in. | <.01 | ||
| Acetic Acid Transmission, g/100sq in. | 0.41 | ||
| Acetone Transmission, g/100sq in. | 0.95 | ||
| Acetophenone Transmission, g/100sq in. | 0.5 | ||
| Benzene Transmission, g/100sq in. | 0.64 | ||
| Carbon Tetrachloride Transmission, g/100sq in. | 0.31 | ||
| Chemical/Solvent Resistance | Excellent | ||
| Detergent Resististance on grit-blasted aluminum, Hrs | 624 | ||
| Detergent Resistance on aluminum, Hours | 264 | ||
| Detergent Resistance on grit-blasted steel, Hrs | 24 | ||
| Ethyl Acetate Transmission, g/100sq in. | 0.76 | ||
| Folding Endurance, # cycles, .18-.20 mm | >10^6 | ||
| Heat of Combustion J/g | 5100 | ASTM D240 | |
| Hexane Transmission, g/100sq in. | 0.56 | ||
| Piperidine Transmission, g/100sq in. | 0.04 | ||
| Red Fuming Nitric Acid Transmission, g/100sq in. | 7.5 – 1.4 | ||
| Salt Spray Resistance on aluminum, Hours | >744 | ||
| Salt Spray Resistance on steel, Hours | 192 | ||
| Sulfuric Acid Transmission, g/100sq in. | 0.00001 | ||
| Water Transmission, g/100sq in. | 0.4 | ||
| Weather Resistance | 20 | Years unaffected in Florida Exposure |
NOTE: The information in this data sheet is for design guidance only. Forming methods and specific geometry could affect properties.
Overview
Teflon™ fluoropolymers maintain high strength, toughness, self-lubrication, flexibility at temperature extremes, and low coefficients of friction. With these superior chemical and thermal properties, Teflon™ exhibits better performance and versatility. Many applications benefit from their highly valued physical and chemical characteristics which include low flammability, chemical inertness, high-stress crack resistance, excellent dielectric properties, durability and resistance to wear, low coefficient of friction, low reflective index, superior UV resistance and low surface energy. Material data provided by Chemours Company.
Applications & Usage
- Wafer Transfer Arms
- Insulators
- Plugs
- Feed Thru Caps
- Fabric and Carpet Protection
- Cookware, bakeware, textiles and paint
- Airplane Electronic Components
- Robotic Arms
- Plenum Cables
- Photovoltaic Solar Cells
- Consumer electronics such as computer cables, smart devices and wearables
Industries Using This Material
- Semiconductor
- Medical
- Energy
- Food
- Aerospace
- Telecom