PEKK-ESD · reinforced grade
PEKK-ESD CF-ESD
Properties of the CF-ESD condition, compared with the other PEKK-ESD grades.
Pick when stiffness and dimensional stability dominate and 10⁴–10⁶ Ω surface resistance is acceptable; more anisotropic and abrasive to nozzles/tools.
What is PEKK-ESD CF-ESD?
PEKK-ESD CF-ESD is PEKK-ESD in the CF-ESD grade — pick when stiffness and dimensional stability dominate and 10⁴–10⁶ Ω surface resistance is acceptable; more anisotropic and abrasive to nozzles/tools. PEKK-ESD CF-ESD has a yield strength of 78 MPa (11.3 ksi) and a tensile strength of 105 MPa (15.2 ksi) — stronger than 85% of polymer grades. Elongation at break is 1.5% and the elastic modulus is 12 GPa (1.74 Msi). PEKK-ESD CF-ESD has a density of 1.4 g/cm³ (0.0506 lb/in³), heavier than 79% of polymer grades. Its glass-transition temperature is 162°C (324 °F). CNT-XZ is the default condition FabDigit quotes; CF-ESD is available on request or by drawing note.
Advantages
- Conducts heat well — 0.55 W/m·K (0.318 BTU/hr·ft·°F), better than 99% of polymer grades
- Stiff — 12 GPa (1.74 Msi), better than 97% of polymer grades
- Good corrosion resistance — 92/100, better than 91% of polymer grades
- High service temperature — 220°C (428 °F), better than 89% of polymer grades
- High strength — 78 MPa (11.3 ksi), better than 85% of polymer grades
Limitations
- High embodied carbon — 18 kg CO₂/kg, worse than 99% of polymer grades
- Limited ductility — 1.5%, worse than 97% of polymer grades
- Heavy — 1.4 g/cm³ (0.0506 lb/in³), worse than 79% of polymer grades
- Difficult to machine — 45/100, worse than 77% of polymer grades
PEKK-ESD CF-ESD properties
Typical room-temperature values for PEKK-ESD CF-ESD — 10 properties are specific to this condition; the rest are grade-level values shared by every PEKK-ESD grade. Each bar shows where the value sits among the polymer grades in FabDigit's library — further right is higher.
Physical5
PEKK-ESD CF-ESD has a density of 1.4 g/cm³ (0.0506 lb/in³), heavier than 79% of polymer grades. Its glass-transition temperature is 162°C (324 °F).
Mechanical14
PEKK-ESD CF-ESD has a yield strength of 78 MPa (11.3 ksi) and a tensile strength of 105 MPa (15.2 ksi) — stronger than 85% of polymer grades. Elongation at break is 1.5% and the elastic modulus is 12 GPa (1.74 Msi).
Thermal10
PEKK-ESD CF-ESD is rated for continuous service to 220°C (428 °F). It conducts heat at 0.55 W/m·K (0.318 BTU/hr·ft·°F), better than 99% of polymer grades. Thermal expansion is 18 µm/m·K (10 µin/in·°F).
Electrical3
PEKK-ESD CF-ESD has an electrical resistivity of 10,000 Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 91% of polymer grades. UV resistance is very good.
Sustainability4
Producing a kilogram of PEKK-ESD CF-ESD takes about 350 MJ of energy and emits 18 kg of CO₂ — more than 100% of polymer grades. Typical recycled content is 0%.
Manufacturability8
PEKK-ESD CF-ESD's machinability is fair (45/100, worse than 77% of polymer grades); weldability poor (30/100); formability poor (20/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other PEKK-ESD grades and fills
PEKK-ESD is also supplied in 5 other conditions. The full side-by-side table is on the PEKK-ESD overview.
- CNT-XZDefaultStandard commercial form: 2–3 % carbon-nanotube PEKK filament printed in-plane; use for ESD aerospace and electronics fixtures needing best strength.82 MPa tensile
- CF-ESDPick when stiffness and dimensional stability dominate and 10⁴–10⁶ Ω surface resistance is acceptable; more anisotropic and abrasive to nozzles/tools.105 MPa tensile
Working with PEKK-ESD CF-ESD
Is PEKK-ESD easy to machine?
Machines like PEEK but the CNT/carbon filler is abrasive — use sharp polished carbide or diamond-coated tools, high speed, light feeds, air or mist cooling, and stress-relieve near Tg before final passes.
Can PEKK-ESD be welded?
No solvent bonding; joining is by ultrasonic/laser/hot-plate welding at PAEK temperatures or by mechanical fasteners and high-temperature epoxy after plasma/abrasion prep.
Can PEKK-ESD be formed, bent or molded?
FDM needs ~400 °C liquefier with a 190–200 °C heated chamber and dried filament (<0.05 % moisture); injection molding needs 370–400 °C melt, 175–200 °C mold and slow cooling for consistent crystallinity.
What surface finishes work on PEKK-ESD?
Vapor smoothing is not applicable; bead-blast or sand and lightly buff. Do not paint or coat with insulating films if the ESD surface path must be preserved — conductivity comes from the bulk filler network.
PEKK-ESD 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 |
|---|---|---|
| carbon nanotubes (MWCNT)conductive network for 10^6–10^9 Ω surface resistance | 1 – 4 | 2.5 |
| processing additives / pigments | 0 – 1 | 0.3 |
| poly(ether ketone ketone) (PEKK) resinterephthaloyl/isophthaloyl (T/I) ratio sets Tm and crystallization rate | ≥ 95 (balance) | — |
PEKK-ESD CF-ESD — frequently asked
What is PEKK-ESD CF-ESD used for?
PEKK-ESD CF-ESD is typically used for aerospace ducting, fuel system parts and ESD-critical tooling. In short: ESD-safe high-performance PEKK.
What is the yield strength of PEKK-ESD CF-ESD?
PEKK-ESD CF-ESD has a typical yield strength of 78 MPa (11.3 ksi) and a tensile strength of 105 MPa (15.2 ksi) — stronger than 85% of polymer grades. Strength varies by condition: see the 6 listed tempers.
Is PEKK-ESD CF-ESD easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 77% of polymer grades). Machines like PEEK but the CNT/carbon filler is abrasive — use sharp polished carbide or diamond-coated tools, high speed, light feeds, air or mist cooling, and stress-relieve near Tg before final passes.
Can PEKK-ESD CF-ESD be welded?
Not readily — weldability is rated poor (30/100). No solvent bonding; joining is by ultrasonic/laser/hot-plate welding at PAEK temperatures or by mechanical fasteners and high-temperature epoxy after plasma/abrasion prep.
What surface finishes work on PEKK-ESD CF-ESD?
Vapor smoothing is not applicable; bead-blast or sand and lightly buff. Do not paint or coat with insulating films if the ESD surface path must be preserved — conductivity comes from the bulk filler network.
Can PEKK-ESD CF-ESD be formed, bent or molded?
FDM needs ~400 °C liquefier with a 190–200 °C heated chamber and dried filament (<0.05 % moisture); injection molding needs 370–400 °C melt, 175–200 °C mold and slow cooling for consistent crystallinity.
What is the maximum service temperature of PEKK-ESD CF-ESD?
PEKK-ESD CF-ESD is rated for continuous use to about 220°C (428 °F), and briefly to 280°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in PEKK-ESD CF-ESD?
Yes — PEKK-ESD CF-ESD is available for 3D printing with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- Antero 840CN03 (PEKK-based ESD FDM material) datasheet — Stratasys (2023)
- Kepstan PEKK 6000/7000 series product data — Arkema (2022)
- PAEK/high-temperature thermoplastics property overview — ASM International (2016)
- CAMPUS / UL Prospector PAEK compound entries — CAMPUS Plastics (2024)
- ANSI/ESD S541 and IEC 61340-5-1 surface resistance classification — ESD Association / IEC (2019)
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.