PEKK-ESD CNT-ANN
Print state
also ESD PEKK, PEKK ESD
CNT-ANN = cNT-filled ESD, annealed / heat-treated printed part
Post-print anneal above Tg raises crystallinity, stiffness and continuous-use temperature at the cost of a little ductility and ~0.3–0.8 % shrink.
Values for the CNT-ANN condition
Other PEKK-ESD grades and fills
PEKK-ESD is listed in 5 conditions; see the grade overview at PEKK-ESD.
Compare all 5 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
CNT-filled ESD filament, FDM printed upright | Design allowable for loads across the build layers — expect roughly 60–75 % of in-plane strength and near-brittle failure. | 52 | 55 | 1.6 | 85 Shore D |
CNT-XZDefault CNT-filled ESD filament, FDM printed flat | Standard commercial form: 2–3 % carbon-nanotube PEKK filament printed in-plane; use for ESD aerospace and electronics fixtures needing best strength. | 78 | 82 | 3 | 86 Shore D |
CNT-ANNThis page CNT-filled ESD, annealed / heat-treated printed part | Post-print anneal above Tg raises crystallinity, stiffness and continuous-use temperature at the cost of a little ductility and ~0.3–0.8 % shrink. | 84 | 88 | 2.2 | 88 Shore D |
Carbon-black conductive/ESD PEKK injection-molding compound | Lower-cost route for volume ESD parts (wafer handling, connectors); tighter resistivity control than printed parts but needs 380–400 °C barrel and hot molds. | 90 | 95 | 5 | 87 Shore D |
Carbon-fiber reinforced ESD PEKK | Pick when stiffness and dimensional stability dominate and 10⁴–10⁶ Ω surface resistance is acceptable; more anisotropic and abrasive to nozzles/tools. | — | 105 | 1.5 | — |
What is PEKK-ESD CNT-ANN?
PEKK-ESD CNT-ANN is PEKK-ESD in the CNT-ANN condition — post-print anneal above Tg raises crystallinity, stiffness and continuous-use temperature at the cost of a little ductility and ~0.3–0.8 % shrink. PEKK-ESD CNT-ANN has a yield strength of 84 MPa (12.2 ksi) and a tensile strength of 88 MPa (12.8 ksi) — stronger than 89% of polymer grades. Elongation at break is 2.2% and the elastic modulus is 3.9 GPa (0.566 Msi). PEKK-ESD CNT-ANN has a density of 1.33 g/cm³ (0.048 lb/in³), heavier than 73% of polymer grades. Its glass-transition temperature is 162°C (324 °F). CNT-XZ is the default condition FabDigit quotes; CNT-ANN is available on request or by drawing note.
Advantages
- Good corrosion resistance — 93/100, better than 95% of polymer grades
- High service temperature — 240°C (464 °F), better than 92% of polymer grades
- High strength — 84 MPa (12.2 ksi), better than 89% of polymer grades
- Conducts heat well — 0.32 W/m·K (0.185 BTU/hr·ft·°F), better than 88% of polymer grades
- Stiff — 3.9 GPa (0.566 Msi), better than 86% of polymer grades
Limitations
- High embodied carbon — 18 kg CO₂/kg, worse than 99% of polymer grades
- Limited ductility — 2.2%, worse than 92% of polymer grades
- Limited formability — 15/100, worse than 79% of polymer grades
PEKK-ESD CNT-ANN properties
Typical room-temperature values for PEKK-ESD CNT-ANN; 24 are specific to this condition. Other listed values are PEKK-ESD reference data and may not represent this condition. Bars are the position among polymer grades.
Physical5
PEKK-ESD CNT-ANN has a density of 1.33 g/cm³ (0.048 lb/in³), heavier than 73% of polymer grades. Its glass-transition temperature is 162°C (324 °F).
Mechanical16
PEKK-ESD CNT-ANN has a yield strength of 84 MPa (12.2 ksi) and a tensile strength of 88 MPa (12.8 ksi) — stronger than 89% of polymer grades. Elongation at break is 2.2% and the elastic modulus is 3.9 GPa (0.566 Msi).
Thermal11
PEKK-ESD CNT-ANN is rated for continuous service to 240°C (464 °F). It conducts heat at 0.32 W/m·K (0.185 BTU/hr·ft·°F), better than 88% of polymer grades. Thermal expansion is 42 µm/m·K (23.3 µin/in·°F).
Electrical3
PEKK-ESD CNT-ANN has an electrical resistivity of 8,000 Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (93/100), better than 95% of polymer grades. UV resistance is very good.
Sustainability4
Producing a kilogram of PEKK-ESD CNT-ANN 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 CNT-ANN's machinability is good (60/100, better than 51% of polymer grades); weldability poor (25/100); formability poor (15/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with PEKK-ESD CNT-ANN
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 CNT-ANN — frequently asked
What is PEKK-ESD CNT-ANN used for?
PEKK-ESD CNT-ANN 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 CNT-ANN?
PEKK-ESD CNT-ANN has a typical yield strength of 84 MPa (12.2 ksi) and a tensile strength of 88 MPa (12.8 ksi) — stronger than 89% of polymer grades. Strength varies by condition: see the 5 listed tempers.
Is PEKK-ESD CNT-ANN easy to machine?
Reasonably — machinability is rated good (60/100, better than 51% 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 CNT-ANN be welded?
Not readily — weldability is rated poor (25/100). 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 CNT-ANN?
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 CNT-ANN 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 CNT-ANN?
PEKK-ESD CNT-ANN is rated for continuous use to about 240°C (464 °F), and briefly to 280°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between PEKK-ESD CNT-XZ and PEKK-ESD CNT-ZX?
CNT-XZ is the default condition — standard commercial form: 2–3 % carbon-nanotube PEKK filament printed in-plane; use for ESD aerospace and electronics fixtures needing best strength. CNT-ZX: design allowable for loads across the build layers — expect roughly 60–75 % of in-plane strength and near-brittle failure. Yield strength is 78 MPa in CNT-XZ versus 52 MPa in CNT-ZX.
Can FabDigit make parts in PEKK-ESD CNT-ANN?
Yes — PEKK-ESD CNT-ANN is available for 3D printing; every part is priced by an engineer rather than instantly. 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.