PFA · certified grade · default condition
PFA High Purity (Semiconductor)
Properties of the High Purity (Semiconductor) condition, compared with the other PFA grades.
Choose for wafer-fab wet-chemical tubing, fittings, valve liners, bottles and quartz-substitute vessels where ppb-level metal and ion extractables matter.
What is PFA High Purity (Semiconductor)?
PFA High Purity (Semiconductor) is PFA in a High Purity (Semiconductor) certified grade — choose for wafer-fab wet-chemical tubing, fittings, valve liners, bottles and quartz-substitute vessels where ppb-level metal and ion extractables matter. PFA High Purity (Semiconductor) has a yield strength of 13 MPa (1.89 ksi) and a tensile strength of 30 MPa (4.35 ksi) — weaker than 91% of polymer grades. Elongation at break is 330% and the elastic modulus is 0.6 GPa (0.087 Msi). PFA High Purity (Semiconductor) has a density of 2.15 g/cm³ (0.0777 lb/in³), heavier than 99% of polymer grades. Its glass-transition temperature is 90°C (194 °F).
Advantages
- Good corrosion resistance — 100/100, better than 100% of polymer grades
- Good UV / weathering resistance — 99/100, better than 100% of polymer grades
- High service temperature — 260°C (500 °F), better than 97% of polymer grades
- Low moisture uptake — 0.02%, better than 92% of polymer grades
- Ductile — tolerates forming and impact — 330%, better than 83% of polymer grades
Limitations
- Heavy — 2.15 g/cm³ (0.0777 lb/in³), worse than 99% of polymer grades
- High mold shrinkage — 4%, worse than 99% of polymer grades
- Low strength — 13 MPa (1.89 ksi), worse than 91% of polymer grades
- High embodied carbon — 12 kg CO₂/kg, worse than 91% of polymer grades
PFA High Purity (Semiconductor) properties
Typical room-temperature values for PFA High Purity (Semiconductor) — 6 properties are specific to this condition; the rest are grade-level values shared by every PFA grade. Each bar shows where the value sits among the polymer grades in FabDigit's library — further right is higher.
Physical7
PFA High Purity (Semiconductor) has a density of 2.15 g/cm³ (0.0777 lb/in³), heavier than 99% of polymer grades. Its glass-transition temperature is 90°C (194 °F).
Mechanical8
PFA High Purity (Semiconductor) has a yield strength of 13 MPa (1.89 ksi) and a tensile strength of 30 MPa (4.35 ksi) — weaker than 91% of polymer grades. Elongation at break is 330% and the elastic modulus is 0.6 GPa (0.087 Msi).
Thermal10
PFA High Purity (Semiconductor) is rated for continuous service to 260°C (500 °F). It conducts heat at 0.22 W/m·K (0.127 BTU/hr·ft·°F), better than 60% of polymer grades. Thermal expansion is 130 µm/m·K (72.2 µin/in·°F).
Electrical7
PFA High Purity (Semiconductor) is an electrical insulator with a dielectric strength of 25 kV/mm (635 V/mil) and a resistivity of 1×10¹⁶ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (100/100), better than 100% of polymer grades. UV resistance is excellent.
Sustainability4
Producing a kilogram of PFA High Purity (Semiconductor) takes about 250 MJ of energy and emits 12 kg of CO₂ — more than 93% of polymer grades. Typical recycled content is 0%.
Manufacturability8
PFA High Purity (Semiconductor)'s machinability is good (55/100, worse than 63% of polymer grades); weldability very good (75/100); formability very good (70/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other PFA grades and fills
PFA is also supplied in 7 other conditions. The full side-by-side table is on the PFA overview.
- High Purity (Semiconductor)DefaultChoose for wafer-fab wet-chemical tubing, fittings, valve liners, bottles and quartz-substitute vessels where ppb-level metal and ion extractables matter.30 MPa tensile
- GF20Compounded PFA for wear parts, seats and bushings needing higher stiffness, lower creep and reduced thermal expansion; loses transparency and some chemical purity.24 MPa tensile
- AS-CCarbon-black or carbon-fibre loaded PFA for static-dissipative chemical hose liners, fuel/solvent handling and semiconductor tools where charge build-up is a hazard.21 MPa tensile
Working with PFA High Purity (Semiconductor)
Is PFA easy to machine?
Machines like PTFE: very sharp positive-rake tools, high speed with light feed and generous coolant, allow for large springback and 4–5× steel thermal expansion; anneal near 260 °C before finish cuts on precision parts.
Can PFA be welded?
Fully fusion weldable by hot-gas, butt-fusion, IR or flare/heat-forming above 350 °C using PFA filler; keep tooling clean and use inert purge to avoid corrosive decomposition products.
Can PFA be formed, bent or molded?
Injection mould/extrude at 350–400 °C melt with corrosion-resistant (Hastelloy/Xaloy 306) screws and barrels, mould 150–220 °C, and design for 3–5% shrinkage plus generous venting; rotolining and transfer moulding use low-MFR grades.
What surface finishes work on PFA?
Cannot be painted, bonded or printed without surface treatment — use sodium-naphthalene etch, plasma or corona for adhesion; parts are naturally non-stick, low-friction and need no protective coating.
PFA 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 |
|---|---|---|
| perfluoropropyl vinyl ether (PPVE)comonomer giving melt processability; MFA variants use PMVE instead | 0.5 – 5 | 2 |
| tetrafluoroethylene (TFE)backbone monomer | ≥ 95 (balance) | — |
PFA High Purity (Semiconductor) — frequently asked
What is PFA High Purity (Semiconductor) used for?
PFA High Purity (Semiconductor) is typically used for high-purity semiconductor tubing and fittings, chemical process pipe and vessel linings, semiconductor wet-process parts, valve and pump components, wire and cable insulation and transparent film and sight tubes. In short: corrosion-proof chemical expert.
What is the yield strength of PFA High Purity (Semiconductor)?
PFA High Purity (Semiconductor) has a typical yield strength of 13 MPa (1.89 ksi) and a tensile strength of 30 MPa (4.35 ksi) — weaker than 91% of polymer grades. Strength varies by condition: see the 8 listed tempers.
Is PFA High Purity (Semiconductor) easy to machine?
Reasonably — machinability is rated good (55/100, worse than 63% of polymer grades). Machines like PTFE: very sharp positive-rake tools, high speed with light feed and generous coolant, allow for large springback and 4–5× steel thermal expansion; anneal near 260 °C before finish cuts on precision parts.
Can PFA High Purity (Semiconductor) be welded?
Yes — weldability is rated very good (75/100). Fully fusion weldable by hot-gas, butt-fusion, IR or flare/heat-forming above 350 °C using PFA filler; keep tooling clean and use inert purge to avoid corrosive decomposition products.
What surface finishes work on PFA High Purity (Semiconductor)?
Cannot be painted, bonded or printed without surface treatment — use sodium-naphthalene etch, plasma or corona for adhesion; parts are naturally non-stick, low-friction and need no protective coating.
Can PFA High Purity (Semiconductor) be formed, bent or molded?
Injection mould/extrude at 350–400 °C melt with corrosion-resistant (Hastelloy/Xaloy 306) screws and barrels, mould 150–220 °C, and design for 3–5% shrinkage plus generous venting; rotolining and transfer moulding use low-MFR grades.
What is the maximum service temperature of PFA High Purity (Semiconductor)?
PFA High Purity (Semiconductor) is rated for continuous use to about 260°C (500 °F), and briefly to 285°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in PFA High Purity (Semiconductor)?
Yes — PFA High Purity (Semiconductor) is available for CNC machining, sheet metal and injection molding with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- Teflon PFA fluoroplastic resin product and property information — Chemours (2023)
- Hyflon PFA/MFA product data sheets — Syensqo (Solvay Specialty Polymers) (2022)
- Neoflon PFA grade list and processing guide — Daikin Industries (2022)
- ASTM D3307 Standard Specification for Perfluoroalkoxy (PFA) Resin Molding and Extrusion Materials — ASTM International (2020)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
- CAMPUS / UL Prospector fluoropolymer datasheets — CAMPUS Plastics / UL (2024)
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.