Amorphous PEKK avoids PEEK's crystallisation-control problem and prints at a lower chamber temperature. Unfilled grades give 73-90 MPa printed in plane; the 15 % carbon aerospace grade…
Open in interactive comparisonAerospace interior and structural parts; 3DXTech labels its carbon-filled PEKK-A grade AERO and Stratasys certifies Antero 800NA for outgassing and FST
Amorphous PEKK avoids PEEK's crystallisation-control problem and prints at a lower chamber temperature. Unfilled grades give 73-90 MPa printed in plane; the 15 % carbon aerospace grade posts the highest printed tensile, flexural and modulus figures in this dataset at 126, 178 and 9125 MPa.
PEKK is used for demanding lightweight components where chemical resistance, heat capability and manufacturing control matter together. Arkema shows an aircraft door bracket printed in Kepstan PEKK and discusses industrial FFF and laser-sintering applications. Its controllable crystallization behavior gives manufacturers more freedom to balance processing, interlayer bonding and final properties than a simple comparison of polymer strength would suggest.
PEKK grades can be selected for different crystallization rates and processed into amorphous or crystalline structures. Crystalline processing and annealing change the balance of chemical, thermal and dimensional behavior; carbon reinforcement trades ductility for stiffness, while ESD grades address charge dissipation. Match the grade and thermal history to the job rather than treating all PEKK as one material. Printed interlayer behavior and residual stress remain important for loaded parts.
FFF/FDM context; pictured printed bracket · Kepstan PEKK; exact bracket grade and filler content are not specified · Documented case
Arkema publishes a miniFactory-produced aircraft door bracket in Kepstan PEKK as an example of the polymer's additive-manufacturing applications.
Check the model’s material and process notes before choosing a filament.
Representative catalog values. Check the exact grade and its linked conditions before using a setting.
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—140 (3DXTech CarbonX PEKK-A CF15)
140 (3DXTech CarbonX PEKK-A CF15)
Actively heated chamber required
Actively heated chamber required
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—Open a topic to explore the complete data. Each value keeps its original conditions, units and dated sources.
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Base polymer / chemistry | Polyether ketone ketone, amorphous grade — a polyaryletherketone that stays amorphous, so it does not need PEEK's crystallisation control. Stratasys sells it as Antero 800NA and Antero 840CN03; category numbers below are unfilled unless a carbon grade is named | 2 sources
|
| Density (g/cm³) | 1.28 unfilled (ASTM D792, Antero 800NA; 1.31 annealed) and 1.33 for CarbonX PEKK-A CF15 (ISO 1183) | 2 sources
|
| Typical price (USD/kg) | 1 kg-equivalent spools cluster near 550 | 3 sources
|
| Price range across brands (USD/kg) | 333-771 across grades and formats; 3DXTech CarbonX PEKK-A+CF15 333 at 2 kg, 3D4Makers unfilled PEKK-A 485 at 2 kg, IEMAI 3D 500 at 1 kg, Kimya PEKK Carbon 771 at 500 g | 5 sources
|
| Market availability (1–5) | Niche, a handful of specialist brands | 3 sources
|
| Spool sizes & diameters | 1.75 and 2.85 mm; 200 g to 2 kg spools, plus Stratasys canisters | 3 sources
|
| Typical applications | Aerospace interior and structural parts; 3DXTech labels its carbon-filled PEKK-A grade AERO and Stratasys certifies Antero 800NA for outgassing and FST | 2 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Bed temperature (°C) | 140 (3DXTech CarbonX PEKK-A CF15) | 1 source
|
| Enclosure / chamber requirement (1–5) | Actively heated chamber required | 2 sources
|
| Overall printing difficulty (1–5) | Expert / industrial hardware only | 2 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Nozzle hardness required (1–4) | Hardened steel required — the category spans unfilled PEKK, where brass is acceptable, and the carbon-filled aerospace grades that make up most of the market | 2 sources
|
| Abrasiveness (1–5) | Highly abrasive — most PEKK filament sold is carbon-filled; unfilled Antero 800NA and ThermaX PEKK-A are non-abrasive | 2 sources
|
| Nozzle clog risk (1–5) | Moderate — needs dry filament and a clean nozzle; 3DXTech lists no special nozzle concerns but a mandatory 120 °C pre-dry before every print | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Effect of moisture on strength | No dry-versus-conditioned figures are published; 3DXTech mandates a 120 °C, 4 h pre-dry before every print because trapped water flashes to steam at these nozzle temperatures | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Tensile strength (XY) (MPa) | 86.7-90.0 at yield and 73.0 at break (printed XZ, ASTM D638, Antero 800NA on the F900 and Fortus 450mc); 88.8 at break annealed; 126 at break for CarbonX PEKK-A CF15 (printed XY, ISO 527) | 2 sources
|
| Young's modulus (MPa) | 2640-3870 (printed XZ, ASTM D638, Antero 800NA; upper figure annealed); 9125 for CarbonX PEKK-A CF15 (printed XY, ISO 527) | 2 sources
|
| Elongation at break (%) | 6.1 at break (printed XZ, ASTM D638, Antero 800NA); 2.3 in ZX; 3.15 for CarbonX PEKK-A CF15 (ISO 527) | 2 sources
|
| Flexural strength (MPa) | 136 at 5 % strain (printed XZ, ASTM D790, Antero 800NA); 178 for CarbonX PEKK-A CF15 (printed XY, ISO 178) | 2 sources
|
| Flexural modulus (MPa) | 3200 (printed XZ, ASTM D790, Antero 800NA); 8817 for CarbonX PEKK-A CF15 (printed XY, ISO 178) | 2 sources
|
| Other impact data | Izod notched 41.1 J/m XZ and 33.3 J/m ZX; unnotched 1730 J/m XZ against 203 J/m ZX (printed, ASTM D256/D4812, Antero 800NA) | 1 source
|
| Layer adhesion / Z tensile (MPa) | 50.1-59.4 at yield (printed ZX, ASTM D638, Antero 800NA); 56.0 for the ESD grade Antero 840CN03 | 2 sources
|
| Brittleness (1–5) | Moderate unfilled — 6.1 % elongation at break in plane; brittle in the carbon-filled grades at 3.15 % | 2 sources
|
| Creep resistance / sustained load (1–5) | Excellent — holds load for years. Antero 800NA still holds 82 % of its room-temperature ZX tensile strength at 104 °C and 63 % at 132 °C (printed, ASTM D638) | 1 source
|
| Elasticity / flexibility (1–5) | Rigid | 1 source
|
| Z strength as % of XY (%) | 56-82 (Antero 800NA and 840CN03 printed on the F900 and Fortus 450mc, ZX against XZ tensile yield and break, ASTM D638) | 2 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| HDT at 0.45 MPa (°C) | 158 (printed XY and ZX, ASTM D648 Method B at 66 psi, Antero 800NA); 285 for CarbonX PEKK-A CF15 (ISO 75 at 0.45 MPa) | 2 sources
|
| HDT at 1.8 MPa (°C) | 156-157 (printed, ASTM D648 Method B at 264 psi, Antero 800NA); moulded 147 | 1 source
|
| Glass transition (Tg) (°C) | 156 (ASTM D7426, Antero 800NA); 165 for CarbonX PEKK-A CF15 (DSC) | 2 sources
|
| Melting point / Vicat (°C) | 300 melt point (ASTM D7426 peak heat, Antero 800NA); 305 for CarbonX PEKK-A CF15 (DSC) | 2 sources
|
| Thermal expansion (CTE) (µm/m·K) | 36.1 in XY and 50.2 in ZX (printed, 40-140 °C, ASTM E831, Antero 800NA); 47.4 and 51.2 for the ESD grade Antero 840CN03 | 2 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| UV resistance (1–5) | Good — years with some colour shift. 1000 h of QUV cycling to ASTM G154 left Antero 800NA's yield strength unchanged at 57 MPa and raised stress at break 3.6 % | 1 source
|
| Electrical & ESD properties | Unfilled PEKK is an insulator at above 1.4e14 ohm-cm (ASTM D257); CarbonX PEKK-A CF15 sits above 10^7 ohm/sq, and the Antero 840CN03 ESD grade is specified at 10^4-10^9 ohm-cm | 3 sources
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Fume toxicity (1–5) | Moderate — measurable VOCs and UFPs, ventilation advised. None of these polymers was in the chamber study, and all are processed far above the temperatures it covered | |
| Ventilation / filtration requirement (1–5) | Ventilated room or enclosure recommended | |
| Dust & fibre handling hazard | Carbon fibre is bound in the matrix; sanding dust should not be inhaled | 1 source
|
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Soluble in | Concentrated sulphuric acid, as for PEEK; no common organic solvent touches a polyaryletherketone. | |
| Softened or crazed by | Concentrated sulphuric acid and liquid Freon are the entries Ensinger marks not resistant; acetone, MEK and toluene do nothing. | 1 source |
| Solvent welding & smoothing agent | None — no solvent softens a polyaryletherketone. | 1 source |
Values describe representative grades, not every spool. Manufacturer datasheets and independent tests retain their source labels and dates. Printed orientation, test method, conditioning and formulation can change results. Unknown values are —. A listed use is not a certification. Shore A, Shore D and Rockwell hardness are separate scales.
Historical USD/kg snapshots. Read each listing’s sale/from qualifiers, spool mass, source date, shipping and tax notes. Product figures are separate from the material summary.
$665.00 / 2 kg spool = $332.50/kg; 750 g spool $250.00 ($333/kg), 3dxtech.com product catalogue, Aug 2026
Handle carbonx-pekk-a-cf15-1. 15 wt% carbon fibre, labelled AERO.
Open product listing ↗| Density (g/cm³) | 1.33 (ISO 1183) |
|
|---|---|---|
| Nozzle temperature (°C) | 390 (TDS printed-specimen condition) |
|
| Bed temperature (°C) | 140 (TDS printed-specimen condition) |
|
| Tensile strength (XY) (MPa) | 126 at break (printed XY, ISO 527) |
|
| Young's modulus (MPa) | 9125 (printed XY, ISO 527) |
|
| Elongation at break (%) | 3.15 at break (printed XY, ISO 527) |
|
| Flexural strength (MPa) | 178 (printed XY, ISO 178) |
|
| Flexural modulus (MPa) | 8817 (printed XY, ISO 178) |
|
| HDT at 0.45 MPa (°C) | 285 (ISO 75, 0.45 MPa) |
|
| Glass transition (Tg) (°C) | 165 (DSC) |
|
| Melting point / Vicat (°C) | 305 melting (DSC) |
|
| Electrical & ESD properties | Surface resistance >10^7 Ω/sq (ASTM D257) |
|
EUR 899.00 / 2 kg spool = $485.46/kg at 1.08 USD/EUR, 3d4makers.com catalogue, Aug 2026
Amorphous PEKK from the Arkema Kepstan 6000 series. The 3D4Makers TDS states its material properties are measured on injection-moulded samples, not printed ones.
Open product listing ↗| Density (g/cm³) | 1.27 (ISO 1183) |
|
|---|---|---|
| Nozzle temperature (°C) | 350–400 |
|
| Bed temperature (°C) | 120–160 |
|
| Recommended chamber temperature (°C) | 70–150 |
|
| Drying temperature & time | 120 °C for 4–8 h |
|
| Charpy impact, notched (kJ/m²) | 5.5 notched at +24 °C and at −30 °C (injection-moulded, ISO 179/1eA) |
|
| Other impact data | Compression strength 108 MPa (injection-moulded, ISO 604) |
|
| HDT at 1.8 MPa (°C) | 139 (injection-moulded, ISO 75-1/-2, 1.80 MPa) |
|
| Glass transition (Tg) (°C) | 158 (20 °C/min) |
|
| Flammability / UL 94 | V-0 at 0.8 mm (UL 94) |
|
| Electrical & ESD properties | Surface resistivity 1×10^16 Ω at 23 °C (ASTM D257) |
|
$500.00 / 1 kg spool, store.iemai3d.com, Aug 2026
Natural, 1.75 mm. Continuous service temperature 255 °C by IEC 60216.
Open product listing ↗| Density (g/cm³) | 1.27 specific gravity (ISO 1183-2) |
|
|---|---|---|
| Shrinkage (%) | 1.0–1.6 linear mould shrinkage (DIN 16742) |
|
| Tensile strength (XY) (MPa) | 90 at 23 °C / 50 % RH (ISO 527; specimen type not stated) |
|
| Elongation at break (%) | 5 at 23 °C / 50 % RH (ISO 527) |
|
| Flexural strength (MPa) | 150 at 23 °C / 50 % RH (ISO 527 as printed on the data sheet) |
|
| Flexural modulus (MPa) | 3000 at 23 °C / 50 % RH (ISO 178) |
|
| Continuous service temperature (°C) | 255 continuous (IEC 60216); 300 for up to 200 h |
|
| Flammability / UL 94 | UL 94 V-0 |
|
$550.00 / 1 kg spool = $550.00/kg; 500 g spool $295.00 ($590/kg), 3dxtech.com product catalogue, Aug 2026
Handle pekk-a. Unfilled amorphous PEKK.
Open product listing ↗| Density (g/cm³) | 1.29 (ISO 1183) |
|
|---|---|---|
| Nozzle temperature (°C) | 370 (TDS printed-specimen condition) |
|
| Bed temperature (°C) | 130 (TDS printed-specimen condition) |
|
| Tensile strength (XY) (MPa) | 105 (printed XY, ISO 527) |
|
| Young's modulus (MPa) | 3200 (printed XY, ISO 527) |
|
| Elongation at break (%) | 10 (printed XY, ISO 527) |
|
| Flexural strength (MPa) | 134 (printed XY, ISO 178) |
|
| Flexural modulus (MPa) | 2900 (printed XY, ISO 178) |
|
| HDT at 0.45 MPa (°C) | 182 (ISO 75, 0.45 MPa) |
|
| Glass transition (Tg) (°C) | 165 (DSC) |
|
| Melting point / Vicat (°C) | 335 melting (DSC) |
|
| Flammability / UL 94 | UL 94 V-0 at 0.8 mm (base resin) |
|
EUR 327.25 incl. 19 % VAT / 500 g spool = EUR 654.50/kg = $706.86/kg at 1.08 USD/EUR, igo3d.com, Aug 2026
Kepstan-based amorphous PEKK. Kimya's printed specimens were made XY at 20–40 mm/s, 100 % rectilinear infill, ±45°.
Open product listing ↗| Density (g/cm³) | 1.261 (ISO 1183) |
|
|---|---|---|
| Diameter tolerance (± mm) | 0.1 at 1.75 mm |
|
| Nozzle temperature (°C) | 370–380 |
|
| Bed temperature (°C) | 110–125 |
|
| Recommended chamber temperature (°C) | 60–80 |
|
| Tensile strength (XY) (MPa) | 85 (printed XY, ISO 527, type 5A specimen) |
|
| Young's modulus (MPa) | 2850 (printed XY, ISO 527) |
|
| Elongation at break (%) | 8 at break (printed XY, ISO 527) |
|
| HDT at 1.8 MPa (°C) | 139 (ISO 75, 1.8 MPa) |
|
| Glass transition (Tg) (°C) | 159 (ISO 11357 DSC) |
|
| Melting point / Vicat (°C) | 308 melting point (ISO 11357 DSC) |
|
| Continuous service temperature (°C) | 150 maximum use temperature |
|
| Flammability / UL 94 | UL 94 V0 |
|
| Electrical & ESD properties | Surface resistance 10^16 Ω/m² (ASTM D257) |
|
EUR 357.00 incl. 19 % VAT / 500 g spool = EUR 714.00/kg = $771.12/kg at 1.08 USD/EUR, igo3d.com, Aug 2026
Carbon-filled, grey, 1.75 and 2.85 mm.
Open product listing ↗| Density (g/cm³) | 1.27 (ISO 1183) |
|
|---|---|---|
| Diameter tolerance (± mm) | 0.1 at 1.75 mm and at 2.85 mm |
|
| Nozzle temperature (°C) | 370–380 |
|
| Bed temperature (°C) | 150 |
|
| Recommended chamber temperature (°C) | 80 |
|
| Tensile strength (XY) (MPa) | 39.1 (printed XY, ISO 527, type 5A specimen) |
|
| Young's modulus (MPa) | 2900 (ISO 527) |
|
| Elongation at break (%) | 3.2 at tensile strength (printed XY, ISO 527) |
|
| Flexural strength (MPa) | 85.9 (printed XY, ISO 178) |
|
| Flexural modulus (MPa) | 2924 (printed XY, ISO 178) |
|
| Charpy impact, notched (kJ/m²) | 5.6 notched type A (printed XY, ISO 179) |
|
| Other impact data | Izod notched type A 5.0 kJ/m² on the filament (ISO 180) |
|
| Glass transition (Tg) (°C) | 160 |
|
| Continuous service temperature (°C) | 150 maximum use temperature |
|
| Electrical & ESD properties | Surface resistance 10^16 Ω/m² (ASTM D257) |
|
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