MFA HP
Other
also Neoflon MFA, Hyflon MFA
HP = high-purity semiconductor grade
Pick for UPW and wet-etch chemical delivery where metal-ion and fluoride extractables must be minimized; same mechanicals, tighter cleanliness control.
Values for the HP condition
Other MFA grades and fills
MFA is listed in 3 conditions; see the grade overview at MFA.
Compare all 3 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Aqueous dispersion | Pick for spray/dip fluoropolymer coatings, glass-cloth impregnation and thin barrier layers on metal, cured above the melting point. | 12 | 22 | 300 | 55 Shore D |
High-flow injection molding grade | Pick for thin-wall or complex injection-molded fittings, valve bodies and semiconductor fluid-handling parts needing easy cavity fill. | 13 | 25 | 330 | 59 Shore D |
HPThis page High-purity semiconductor grade | Pick for UPW and wet-etch chemical delivery where metal-ion and fluoride extractables must be minimized; same mechanicals, tighter cleanliness control. | 13 | 28 | 400 | 58 Shore D |
What is MFA HP?
MFA HP is MFA in the HP condition — pick for UPW and wet-etch chemical delivery where metal-ion and fluoride extractables must be minimized; same mechanicals, tighter cleanliness control. MFA HP has a yield strength of 13 MPa (1.89 ksi) and a tensile strength of 28 MPa (4.06 ksi) — weaker than 86% of polymer grades. Elongation at break is 400% and the elastic modulus is 0.55 GPa (0.0798 Msi). MFA HP has a density of 2.14 g/cm³ (0.0773 lb/in³), heavier than 98% of polymer grades.
Advantages
- Good corrosion resistance — 99/100, better than 100% of polymer grades
- Good UV / weathering resistance — 98/100, better than 99% of polymer grades
- High service temperature — 240°C (464 °F), better than 92% of polymer grades
- Low moisture uptake — 0.02%, better than 92% of polymer grades
- Ductile — tolerates forming and impact — 400%, better than 86% of polymer grades
Limitations
- High mold shrinkage — 4%, worse than 99% of polymer grades
- Heavy — 2.14 g/cm³ (0.0773 lb/in³), worse than 98% of polymer grades
- High embodied carbon — 13 kg CO₂/kg, worse than 93% of polymer grades
- Low strength — 13 MPa (1.89 ksi), worse than 86% of polymer grades
MFA HP properties
Typical room-temperature values for MFA HP; 23 are specific to this condition. Other listed values are MFA reference data and may not represent this condition. Bars are the position among polymer grades.
Physical6
MFA HP has a density of 2.14 g/cm³ (0.0773 lb/in³), heavier than 98% of polymer grades.
Mechanical9
MFA HP has a yield strength of 13 MPa (1.89 ksi) and a tensile strength of 28 MPa (4.06 ksi) — weaker than 86% of polymer grades. Elongation at break is 400% and the elastic modulus is 0.55 GPa (0.0798 Msi).
Thermal10
MFA HP is rated for continuous service to 240°C (464 °F). It conducts heat at 0.21 W/m·K (0.121 BTU/hr·ft·°F), better than 55% of polymer grades. Thermal expansion is 130 µm/m·K (72.2 µin/in·°F).
Electrical7
MFA HP is an electrical insulator with a dielectric strength of 24 kV/mm (609.6 V/mil) and a resistivity of 1×10¹⁶ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (99/100), better than 100% of polymer grades. UV resistance is excellent.
Sustainability4
Producing a kilogram of MFA HP takes about 250 MJ of energy and emits 13 kg of CO₂ — more than 92% of polymer grades. Typical recycled content is 0%.
Manufacturability8
MFA HP's machinability is good (55/100, worse than 64% of polymer grades); weldability very good (70/100); formability very good (80/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with MFA HP
Is MFA easy to machine?
Machines like PFA: very sharp positive-rake tools, high speed, light feed and good chip clearance; it is soft and creeps, so use light clamping, coolant-flood to avoid heat build-up and expect spring-back on tight tolerances.
Can MFA be welded?
Fusion/hot-gas welding of sheet and liners works with matching MFA rod above ~300 °C in an inert or clean-air stream; adhesive bonding requires chemical etch or plasma/corona treatment of the non-wetting surface.
Can MFA be formed, bent or molded?
Melt-process at 320–380 °C with corrosion-resistant (Hastelloy/nickel-alloy) barrels and dies, purge fully to avoid HF-generating degradation, and design for 3–5.5% shrinkage plus generous draft; rotolining and powder coating need slow ramp and full melt soak.
What surface finishes work on MFA?
No painting, plating or anodizing; surfaces are inherently non-stick and release-prone. Cosmetic finish is set by tool polish or by flame/plasma treatment when printing or bonding is needed.
MFA chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| tetrafluoroethylene (TFE)mol basis, main backbone unit | 94 – 99 | 97 |
| perfluoro(methyl vinyl ether) (PMVE)comonomer giving melt processability; distinguishes MFA from PFA (PPVE) | 1 – 6 | 3 |
MFA HP — frequently asked
What is MFA HP used for?
MFA HP is typically used for semiconductor wafer-handling components, chemical process linings, high-purity tubing and fittings and wire/cable jacketing. In short: easier-processing PFA alternative; fully fluorinated to 240 °C; high-purity semiconductor grade.
What is the yield strength of MFA HP?
MFA HP has a typical yield strength of 13 MPa (1.89 ksi) and a tensile strength of 28 MPa (4.06 ksi) — weaker than 86% of polymer grades. Strength varies by condition: see the 3 listed tempers.
Is MFA HP easy to machine?
Reasonably — machinability is rated good (55/100, worse than 64% of polymer grades). Machines like PFA: very sharp positive-rake tools, high speed, light feed and good chip clearance; it is soft and creeps, so use light clamping, coolant-flood to avoid heat build-up and expect spring-back on tight tolerances.
Can MFA HP be welded?
Yes — weldability is rated very good (70/100). Fusion/hot-gas welding of sheet and liners works with matching MFA rod above ~300 °C in an inert or clean-air stream; adhesive bonding requires chemical etch or plasma/corona treatment of the non-wetting surface.
What surface finishes work on MFA HP?
No painting, plating or anodizing; surfaces are inherently non-stick and release-prone. Cosmetic finish is set by tool polish or by flame/plasma treatment when printing or bonding is needed.
Can MFA HP be formed, bent or molded?
Melt-process at 320–380 °C with corrosion-resistant (Hastelloy/nickel-alloy) barrels and dies, purge fully to avoid HF-generating degradation, and design for 3–5.5% shrinkage plus generous draft; rotolining and powder coating need slow ramp and full melt soak.
What is the maximum service temperature of MFA HP?
MFA HP is rated for continuous use to about 240°C (464 °F), and briefly to 260°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- Hyflon MFA / PFA melt-processable perfluoropolymer product data — Solvay Specialty Polymers (2021)
- Fluoroplastics, Vol. 1–2: Non-Melt and Melt Processible Fluoropolymers — Elsevier / Plastics Design Library (Ebnesajjad) (2015)
- ASTM D3307 — Standard Specification for PFA-Fluorocarbon Resin Molding and Extrusion Materials — ASTM International (2020)
- ASTM D638 / D790 / D257 / D150 test methods — ASTM International (2022)
- CAMPUS / Prospector fluoropolymer datasheet aggregation — CWFG / UL Solutions (2024)
- PFA/MFA/FEP (2026)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.