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Typical Property Data
DuPont Teflon PFA Fluoropolymer Resin
Grade 350 -  ASTM D3307, Type II
PFA 350 has a low flow rate, increased flex life, and an enhanced resistance to stress cracking over other grades of PFA.
It is well suited to the transfer molding of linings onto fittings used in hostile chemical applications.

Data should be used only as a guide in selecting the appropriate compound.
Property ASTM Test Method Unit **Nominal Value
Nominal Melting Point D3418 C 302310
(F) (575590)
Coefficient of Linear Thermal Expansion, 21100C D696 mm/mm/C 14 x 105
(70212F) (in./in./F) (7.8 x 105)
100149C mm/mm/C 18 x 105
(212300F) (in./in./F) (9.8 x 105)
149208C mm/mm/C 22 x 105
(300408F) (in./in./F) (12.1 x 105)
Upper Service Temperature C 260
(F) (500)
Flow Rate D3307 g/10 min 2.0
Tensile Strength, 23C (73F) D3307 MPa (psi) 28 (4,000)
250C (482F) 14 (2,000)
Specific Gravity D792 2.122.17
Tensile Yield Strength, 23C (73F) D3307 MPa (psi) 15.2 (2,200)
Ultimate Elongation, 23C (73F) D3307 % 300
250C (482F) % 500
Flexural Modulus, 23C (73F) D790 MPa (psi) 625 (90,000)
250C (482F) MPa (psi) 69 (10,000)
Hardness Durometer D2240 D55
MIT Folding Endurance, 0.180.20 mm (0.0070.008 in.) D2176 cycles *500,000
Dielectric Strength, Short Time, 0.25 mm (0.010 in.) D149 kV/mm (V/mil) 80 (2,000)
Dielectric Constant, 60106 Hz D150 2.03
Dissipation Factor, 60106 Hz D150 0.0001
Volume Resistivity D257 ohm.cm 1018
Water Absorption, 24 hr D570 % < 0.03
Weather and Chemical Resistance Outstanding
Limiting Oxygen Index D2863 % > 95
**Note: Typical properties are not suitable for specification purposes.  Properties may vary based upon processing technique.  Data should be used only as a guide in selecting the appropriate compound.  Actual performance will be affected by processing methods as well as end use service conditions.
* Depending on fabrication conditions