PAS PTFE-LUB
Additive grade
ISO 1043 PAS
Internally lubricated compound (often PTFE + glass or carbon) for dry-running bushings, seals and wear pads at elevated temperature.
Values for the PTFE-LUB condition
Other PAS grades and fills
PAS is listed in 10 conditions; see the grade overview at PAS.
Compare all 10 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
PTFE-LUBThis page PTFE / graphite lubricated bearing grade | Internally lubricated compound (often PTFE + glass or carbon) for dry-running bushings, seals and wear pads at elevated temperature. | — | 68 | 4 | 86 Shore D |
Polysulfone | Lowest-cost, best-flow sulfone; pick for transparent sterilisable housings and food/dairy contact parts up to ~150 °C. | 70 | 70 | 60 | — |
Polyphenylsulfone | Toughest and most steam/hydrolysis resistant sulfone; pick for repeatedly autoclaved medical trays, baby bottles and hot-water plumbing fittings. | 70 | 70 | 70 | — |
Flame retardant, UL 94 V-0 rated | Certified V-0 (often 5VA) compound for aircraft interiors, rail and electrical enclosures with low smoke and heat release. | 72 | 75 | 30 | 85 Shore D |
ESD / static-dissipative compound | Carbon-black or carbon-fibre modified compound with controlled surface resistivity for electronics and cleanroom tooling. | — | 72 | 8 | 86 Shore D |
Polyethersulfone | Highest Tg and stiffness of the family with inherent V-0; pick for 180 °C continuous service, membranes and electrical insulation. | 85 | 88 | 35 | — |
10 % glass-fibre reinforced | Mild stiffening and shrinkage control while keeping usable ductility; for thin-wall housings and connectors. | — | 92 | 6 | — |
20 % glass-fibre reinforced | Balanced stiffness/creep resistance for structural brackets and hot-fluid components. | — | 115 | 3.5 | — |
30 % glass-fibre reinforced | Maximum stiffness and dimensional stability grade; pick for load-bearing high-temperature parts where opacity and lower toughness are acceptable. | 140 | 140 | 2.5 | — |
30 % carbon-fibre reinforced | Highest specific stiffness plus static-dissipative behaviour; for lightweight structural and semiconductor handling parts. | — | 165 | 2 | — |
What is PAS PTFE-LUB?
PAS PTFE-LUB is PAS in the PTFE-LUB grade — internally lubricated compound (often PTFE + glass or carbon) for dry-running bushings, seals and wear pads at elevated temperature. PAS PTFE-LUB has a yield strength of 75 MPa (10.9 ksi) and a tensile strength of 68 MPa (9.86 ksi) — stronger than 84% of polymer grades. Elongation at break is 4% and the elastic modulus is 4.2 GPa (0.609 Msi). PAS PTFE-LUB has a density of 1.5 g/cm³ (0.0542 lb/in³), heavier than 88% of polymer grades. Its glass-transition temperature is 210°C (410 °F).
Advantages
- Conducts heat well — 0.35 W/m·K (0.202 BTU/hr·ft·°F), better than 91% of polymer grades
- Stiff — 4.2 GPa (0.609 Msi), better than 87% of polymer grades
- High strength — 75 MPa (10.9 ksi), better than 84% of polymer grades
- High service temperature — 175°C (347 °F), better than 84% of polymer grades
- Polishes to a fine finish — 70/100, better than 77% of polymer grades
Limitations
- Heavy — 1.5 g/cm³ (0.0542 lb/in³), worse than 88% of polymer grades
- High embodied carbon — 8 kg CO₂/kg, worse than 83% of polymer grades
- Limited ductility — 4%, worse than 78% of polymer grades
PAS PTFE-LUB properties
Typical room-temperature values for PAS PTFE-LUB; 25 are specific to this condition. Other listed values are PAS reference data and may not represent this condition. Bars are the position among polymer grades.
Physical6
PAS PTFE-LUB has a density of 1.5 g/cm³ (0.0542 lb/in³), heavier than 88% of polymer grades. Its glass-transition temperature is 210°C (410 °F).
Mechanical17
PAS PTFE-LUB has a yield strength of 75 MPa (10.9 ksi) and a tensile strength of 68 MPa (9.86 ksi) — stronger than 84% of polymer grades. Elongation at break is 4% and the elastic modulus is 4.2 GPa (0.609 Msi).
Thermal11
PAS PTFE-LUB is rated for continuous service to 175°C (347 °F). It conducts heat at 0.35 W/m·K (0.202 BTU/hr·ft·°F), better than 91% of polymer grades. Thermal expansion is 55 µm/m·K (30.6 µin/in·°F).
Electrical7
PAS PTFE-LUB is an electrical insulator with a dielectric strength of 17 kV/mm (431.8 V/mil) and a resistivity of 1×10¹³ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (85/100), better than 65% of polymer grades. UV resistance is poor.
Sustainability4
Producing a kilogram of PAS PTFE-LUB takes about 145 MJ of energy and emits 8 kg of CO₂ — more than 83% of polymer grades. Typical recycled content is 0%.
Manufacturability8
PAS PTFE-LUB's machinability is good (65/100, better than 66% of polymer grades); weldability poor (20/100); formability poor (20/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with PAS PTFE-LUB
Is PAS easy to machine?
Machines cleanly with sharp carbide tools, high speed and light feeds; use air or water mist rather than solvent-bearing coolants and anneal stock shapes to avoid stress cracking and crazing.
Can PAS be welded?
Ultrasonic, hot-plate, laser and hot-gas welding all work well; solvent bonding possible with strong solvents but adds crazing risk — mechanical joints need generous radii due to notch sensitivity.
Can PAS be formed, bent or molded?
Dry resin to <0.05 % moisture, inject at 340–390 °C with 120–170 °C molds and generous gates/vents; extruded sheet thermoforms readily around 230–260 °C.
What surface finishes work on PAS?
Takes vapour polishing, paint and metallisation with primer; unstabilised parts should be painted or UV-stabilised for outdoor use as they yellow and lose surface toughness.
PAS 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.
| Element | Spec limit (wt %) |
|---|---|
| bisphenol-A ether segmentpresent in PSU (polysulfone) chemistry | — |
| diphenyl ether segmentpresent in PESU (polyethersulfone) chemistry | — |
| biphenyl segmentpresent in PPSU (polyphenylsulfone) chemistry | — |
| glass fiber0–40 % in reinforced compounds | ≈ 0 |
| carbon fiber0–30 % in CF compounds | ≈ 0 |
| PTFE / graphite lubricantup to ~20 % in bearing grades | ≈ 0 |
| aromatic diaryl sulfone repeat unit (–Arbackbone linkage common to PSU, PESU and PPSU | balance |
PAS PTFE-LUB — frequently asked
What is PAS PTFE-LUB used for?
PAS PTFE-LUB is typically used for high-temperature structural parts, specialty electrical insulation, chemical-resistant components and aerospace and medical parts where any sulfone grade is acceptable. In short: umbrella sulfone designation; specify subtype for design; machinable high-heat thermoplastic.
What is the yield strength of PAS PTFE-LUB?
PAS PTFE-LUB has a typical yield strength of 75 MPa (10.9 ksi) and a tensile strength of 68 MPa (9.86 ksi) — stronger than 84% of polymer grades. Strength varies by condition: see the 10 listed tempers.
Is PAS PTFE-LUB easy to machine?
Reasonably — machinability is rated good (65/100, better than 66% of polymer grades). Machines cleanly with sharp carbide tools, high speed and light feeds; use air or water mist rather than solvent-bearing coolants and anneal stock shapes to avoid stress cracking and crazing.
Can PAS PTFE-LUB be welded?
Not readily — weldability is rated poor (20/100). Ultrasonic, hot-plate, laser and hot-gas welding all work well; solvent bonding possible with strong solvents but adds crazing risk — mechanical joints need generous radii due to notch sensitivity.
What surface finishes work on PAS PTFE-LUB?
Takes vapour polishing, paint and metallisation with primer; unstabilised parts should be painted or UV-stabilised for outdoor use as they yellow and lose surface toughness.
Can PAS PTFE-LUB be formed, bent or molded?
Dry resin to <0.05 % moisture, inject at 340–390 °C with 120–170 °C molds and generous gates/vents; extruded sheet thermoforms readily around 230–260 °C.
What is the maximum service temperature of PAS PTFE-LUB?
PAS PTFE-LUB is rated for continuous use to about 175°C (347 °F), and briefly to 210°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- ISO 1043-1 Plastics — Symbols and abbreviated terms — ISO (2011)
- ASTM D6394 Standard Specification for Sulfone Plastics (SP) — ASTM (2022)
- Udel PSU / Veradel PESU / Radel PPSU design guides — Solvay Specialty Polymers (2023)
- Ultrason E / S / P product brochure — BASF (2022)
- TECASON S / E / P stock shape data — Ensinger (2023)
- CAMPUS plastics database — sulfone polymer datasheets — CWFG/CAMPUS (2024)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — ASM International (1988)
- PSU/PES/PPSU (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.