Materials and Tools
Halar®
Halar® (ETCFE) is a chemical relative to Teflon, sharing its excellent chemical resistance properties. There are only a few chemicals that react with Halar, including tetrahydrofuran (THF) and pyridine. Several chemicals will have reduced resistance with elevated temperatures, please see the chemical compatibility section for more information.
| Temperature Range | up to 50 °C |
|---|---|
| Thread Strength | N/A |
| Oxygen Permeability | 25 cc / 100in2 * 24h * atm / mil @ 25 °C |
| pH Range | 1 - 14 |
| Sterilization Techniques | Gamma irradiation; thermal |
| Autoclavable? | Y |
Halar Extended Properties
| General | Comments | Units | ||
|---|---|---|---|---|
| Density | ASTM D792 | g/cc | 1.68 | |
| Melt Flow | 1.05kg/190 °C | g/10 min | 2 | |
| Water Absorption | 24 hour | ASTM D570 | 0.10 | |
| Moisture Absorption at Equilibrium | 50% RH | ASTM D570 | % | <0.01 |
| Hardness, Shore D |
ASTM D2240 | - | 75 | |
| Hardness, Rockwell R | ASTM D785 | - | 90 | |
| Mechanical | Comments | Units | ||
| Tensile Strength | Yield | ASTM D638 | MPa(psi) | 30(4,300) |
| Tensile Strength | Break | ASTM D638 | MPa(psi) | 54(7,800) |
| Elongation | Yield | ASTM D638 | % | 5 |
| Elongation | Break | ASTM D638 | % | 250 |
| Modulus of Elasticity | ASTM D638 | GPa(ksi) | 1.6(240) | |
| Flexural Modulus | ASTM D790 | GPa(ksi) | 1.7(245) | |
| Flexural Yield Strength | ASTM D790 | MPa(psi) | 47(6,800) | |
| Izod Impact Strength | ASTM D256 | J/cm | No break | |
| Izod Impact Low Temp | Notched, at -40 °C | ASTM D256 | J/m(ftlb/in) | 207(2.0) |
| Coefficient of Friction | Dynamic vs. carbon steel, 50mm/s (2in/s) | ASTM D1894 | 0.2 | |
| Thermal | Comments | Units | ||
| Coefficient of Thermal Expansion | linear 20 °C | µin/in- °F | 56 | |
| Deflection Temperature | at 1.8 MPa | ASTM D648 | °C(°F) | 63(145) |
| Melting Point °C | ASTM D3418 | °C(°F) | 240(464) | |
| Maximum Service Temperature | Deflection Temp at 1.8 MPa | - | °C(°F) | 148(300) |
| Thermal Conductivity | - | (W/m-K)BTU-in/hr-ft2- °F | 1.05(1.09) | |
| Flammability | UL-94 @3.1 mm | UL94 | Class | V-0 |
| Electrical | Comments | Units | ||
| Electrical Resistivity | ASTM D257 | ohm-cm | 5.5E+16 | |
| Dielectric Constant | at 1MHz | ASTM D150 | - | 2.57 |
| Dielectric Strength, kV/mm | 3.2mm (90 mils); Short Time | ASTM D149 | Volts/mil(kV/mm) | 350(14) |
| Dissipation Factor | at 1 MHz | ASTM D150 | - | 0.013 |
| Arc Resistance | ASTM D495 | sec | 50 |