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Material

Property Specification(ASTM) Unit                                                                                  Material
        Normal Grade PP Isotactic PP PFA FEP ETFE PVDF
General Continuous service temperature Maximum °C     260 200 150 150
° F     500 392 302 302
Chemical resistance   -     Excellent Excellent Excellent Good
Specific gravity D 792 -     2.15 2.15 1.73 1.78
                   
Electrical Dielectric constant D 150 at 103 Hz -     2.1 2.1 2.6 7.2
D 150 at 106 Hz -     2.1 2.1 2.6 8.5
Dielectric dissipation factor D 150 at 103 Hz -     0.0002 0.0001 0.0008 0.030
D 150 at 106 Hz -     0.0003 0.0008 0.005 9 x 10-2
Dielectric strength (short term) 10 mils film D 149 Volt/mil     2 000 2 000 2 000 1 600
Volume resistivity D 257 Ohm•cm     >1018 >1018 >1016 >1014
                   
Environmental Water absorption D 570 %     < 0.03 < 0.01 < 0.03 < 0.04
Weather resistance - -     Excellent Excellent Excellent Excellent
Oxygene index D 2863 %     > 95 > 95 > 30 44
Flammability UL 94 -     V-0 V-0 V-0 V-0
                   
Mechanical Tensile strength D 1708, D 638 psi     4 000 3 500 6 500 5 000
Elongation D 1708, D 638 %     300 300 200 150
Compressive strength D 695 psi     2 200 2 200 7 000 11 600
Impact strength D 256 at +23°C Ft-Lb/in     No Break No Break No Break 3-6
Flexural Modulus D 790 at +23°C psi     100 000 95 000 200 000 250 000
Tensile Modulus D 638 psi     40 000 50 000 120 000 200 000
Hardness D 2240 -     D-60 D-55 D-75 D-78
Thermal Melting point   ° C     305 270 260° C 160
  ° F     581 518 500° F 320
Thermal conductivity C-177 BTU/hr/ft 2/°F. in     1.3 1.4 1.6 1.3
Deflection temperature 66 psi 264 psi D 648 ° C     74
48
59
57
104
71
113
Deflection temperature 66 psi 264 psi D 648 ° F     166
118
138
134
220
160
235

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