Chemours Teflon® PFA
Tensile bar specimens of Teflon PFA resins have been weathered outdoors in Hialeah, Florida and Troy, Michigan for 10 years. There were no significant changes in tensile properties, specific gravity or melt flow rate after this exposure.
Response to High Energy Ionizing Radiation
The results of preliminary tests using a General Electric Transformer to evaluate the resistance of Teflon PFA to high energy ionizing radiation in air are presented in the following table.
Teflon PFA Fluorocarbon Resins (ASTM-D-1708)
Samples: 10 mil (0.25 mm) compression molded films of Teflon PFA type 340.
Elongation less than 5%
Tensile Strength (psi)
4,390 (30 MPa)
4,090 (20 MPa)
3,620 (25 MPa)
3,080 (21 MPa)
2,110 (15 MPa)
Total Oxidizable Carbon Extractables
Total oxidizable carbon (TOC) present in process systems may contribute to biofilm growth by providing a food source for microorganisms. Components manufactured from Teflon PFA have very low extractable TOC levels.TOC extraction was performed on extruded samples of PFA tubing 0.50" (1.3 cm) in diameter and 60.0" (152 cm) in length. The sections were rinsed with 18 M Ohm ultrapure water and then refilled with water and extracted for five days at 77°F (25°C). The extraction results indicate a TOC concentration of <30 ppb.