Properties for PFA

 

Properties for Perfluoroalkoxy (PFA)
Property ASTM Test Method Unit Value
Thermal
Nominal Melting Point   D3418 °C 302–310
  (°F) (575–590)
Coefficient of Linear Thermal Expansion 21–100° C D696 mm/mm/°C 14 x 10–5
(70–212°F) (in./in./°F) (7.8 x 10–5)
100–149°C mm/mm/°C 18 x 10–5
(212–300°F) (in./in./°F) (9.8 x 10–5)
149–208°C mm/mm/°C 22 x 10–5
(300–408°F) (in./in./°F) (12.1 x 10–5)
Thermal Conductivity     cal/(cm·sec·cm2·°C) 6x10-6
    (BTU/(in·hr·ft2·°F)) (1.3)
Upper Service Temperature   °C 260
(°F) (500)
Flow Rate   D3307 g/10 min 2
Mechanical
Density 23°C (73°F) D792 g/cm (lb/in3) 2.15 (0.078)
Tensile Strength 23°C (73°F) D3307 MPa (psi) 28 (4,000)
250°C (482°F) 14 (2,000)
Specific Gravity   D792 2.12–2.17
Tensile Yield Strength 23°C (73°F) D3307 MPa (psi) 15.2 (2,200)
Ultimate Elongation 23°C (73°F) D3307 % ~300
250°C (482°F) % ~500
Flexural Modulus 23°C (73°F) D790 MPa (psi) 625 (90,000)
250°C (482°F) 69 (10,000)
Impace Strength, IZOD       No Break
Coefficient of Friction 23°C (73°F) on steel 0.2
Hardness Durometer   D2240 D55
MIT Folding Endurance 0.18–0.20 mm
(0.007–0.008 in.)
D2176 cycles *500,000
Electrical
Dielectric Strength, Short Time 0.25 mm
(0.010 in.)
D149 kV/mm
(V/mil)
80 (2,000)
Dielectric Constant, 60–106 Hz   D150 2.03
Dissipation Factor, 60–106 Hz   D150 0.0001
Volume Resistivity   D257 ohm·cm 1018
General
Water Absorption, 24 hr   D570 % < 0.03
Weather and Chemical Resistance   Outstanding
Refractive Index       1.34
Limiting Oxygen Index   D2863 % > 95

Additional References