MFA Properties

MFA (sold under the trade name “Hyflon”) is a perfluoropolymer (totally fluorinated) and has a chemical structure similar to PFA. MFA exhibits the outstanding thermal behavior and chemical resistance found in PTFE, PFA and FEP. In addition, parts made with MFA have been shown to have smooth finished surfaces. This makes MFA a good candidate for the semiconductor, electronics and biologic applications where sanitary flow (fully swept flow – no dead spots) is required. MFA is reported to have better thermal stress crack resistance, higher thermal rating and superior mechanical and electrical properties versus FEP, at high temperatures.

Fluorotherm produces tubing of MFA in all industrial sizes, with standard wall thicknesses of 0.031”, 1mm, and 0.062”. Custom sizes are available upon request.

MFA has low haze values and transmittance of wavelengths in the visible and the UV bands of the spectrum.

MFA** – Perfluoroalkoxy (methyl vinyl ether) - TYPICAL PROPERTIES

Property Value Units Method
Tensile Strength, 73°F 4060 - 5220
28 - 36
Elongation, 73°F 300 - 360 %  
Flexural Strength, 73°F No break at flexure   D 790
Impact Strength, Izod
At -40 deg C
Youngs Modulud 64000 - 70000
440 - 480
D 695
Yield Strength
At 23 deg C
Hardness D59 Durometer  
Density (as polymerized) 2.12 to 2.17 gm/ D 792
Coefficient of Linear Expansion
20 to 100 deg C
12 to 20 x 10-5 K-1 E 831
Melting Point 536 - 554
280 - 290
deg F
deg C
D 3418
Thermal Conductivity Similar to PFA Btu/hr-.ft-deg F
W/m/deg K
ASTM C 177
Specific Heat Similar to PFA Btu/lb/deg F
kJ/Kg/deg K
Heat Distortion Temperature, 66 lb/ (0.455 MPa)   deg F
deg C
D 648
Service Temperature Slightly lower than PFA deg F
deg C
Processing Temperature 644 - 716
340 to 380
deg F
deg C
Surface Arc-Resistance 210 sec D 495
Volume Resistivity, dry, @ 50% RH > 1017 ohm-cm D 257
Surface Resistivity, @ 100% RH > 1017 Ohm/sq.  
Dielectric Constant 100kHz 1.95 ε D150-81
Dielectric Strength 34 - 38 kV mm-1 D149
Dissipation Factor @ 100 kHz < 5 x 10-4   D150-81
Refractive Index   nD 25 D 542
Water Absorption < 0.03 % D570-81
Flame Rating+ V-0   UL-94
Limiting Oxygen Index > 95 % Oxygen D 2863
Resistance to Weathering Excellent    
Specific Gravity 2.12 - .17   D792
Static coefficient of friction Similar to FEP, PFA    

** Properties are given for MFA Grade 620, Solvay Solexis , Inc.
+ Numerical rating for flame spread is not intended to reflect hazards presented by this or any other material under actual fire conditions

NOTE: The information, recommendations and opinions contained herein is only a guide and is intended solely for your consideration, inquiry and verification. The suitability of any material under specific conditions of application is not guaranteed in any manner. Fluorotherm Polymers Inc does not assume legal responsibility for the use of data presented here in any form, under any circumstances, any application, test or communication. Nothing contained herein is to be interpreted as a license or authorization to operate under or infringe any patent.