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Typical Property Data for DuPont? Tefzel ? Fluoropolymer Resin Grade 207 Property Test Method Unit Value Thermal Nominal Melting Point D3159 °C 250–280 (°F) (491–536) Flow Rate D3159 g/10 min 30 Upper Service Temperature UL746 °C 150 (°F) (300) Mechanical Tensile Strength, 23°C (73°F) D3159 MPa (psi) 40 (5,800) Specific Gravity D792 — 1.7 Ultimate Elongation, 23°C (73°F) D3159 % 300 Flexural Modulus, 23°C (73°F) D790 MPa (psi) 1000 (150,000) Impact Strength, 23°C (73°F) D256 J/m (ft·lb/in) No Break Electrical Dielectric Strength, 0.25 mm (0.010 in) D149 V/0.001 in 1,700 Dielectric Constant, 1 MHz, 23°C (73°F) D150 — 2.6–2.8 Dissipation Factor, 1 MHz, 23°C (73°F) D150 — 0.009 Volume Resistivity D257 ohm?m 1 x 103 (ohm?cm) (1 x 1017) General Water Absorption, 24 hr D570 % 0.007 Weather and Chemical Resistance — — Excellent Limiting Oxygen Index D2863 % 30–32