3D Printing Info

Filament comparison

Conductive vs PEEK-CF

Compare printing settings, strength, heat resistance, dated prices and sources.

Conductive filament guideFibre-reinforced PEEK guide

2 selected · all documented properties

Open these two in the interactive comparisonMore Conductive comparisonsMore PEEK-CF comparisons
Conductive vs PEEK-CF — documented properties and sources
PropertyConductive filamentSPECIALTYFibre-reinforced PEEKHIGHTEMP
Market snapshot
Listing priceUSD/kg; dated snapshots$170.36/kg median; $89.99–$796.00/kg across 4 dated product listings$597.50/kg median; $448.00–$695.00/kg across 5 dated product listings
Identity & Market
Base polymer / chemistryA carbon-filled compound conductive by volume rather than merely dissipative; Proto-pasta's is PLA-based, Recreus's and NinjaTek's are TPU, and add:north's Koltron G1 does not state its base polymer[1][2][3][4]Short-fibre reinforced PEEK. 3DXTech's CarbonX grade is nominally 10 wt% carbon and its FibreX grade 20 wt% glass; LEHVOSS Luvocom 3F PEEK CF 9676 is 15 wt% carbon; Ensinger's machining stock runs to 30 wt% carbon[5][6][7][8]
Densityg/cm³Not documented1.39 (ISO 1183)[5]
Typical priceUSD/kg1 kg-equivalent spools span 90–181 for the carbon-filled grades; add:north's Koltron G1 sits far above at 796 because it is sold only in 100 and 250 g coils[9][10][11]1 kg-equivalent spools span 448–972; the middle of the market is about 598[6][7][12]
Price range across brandsUSD/kg90–796 across brands; Proto-pasta conductive PLA 90 at 1 kg, Recreus Conductive Filaflex 160 at 500 g, NinjaTek Eel 181 at 1 kg, add:north Koltron G1 796 at 250 g[9][2][10][11]448-972 across formats and filler types; IEMAI 3D CF-PEEK and GF-PEEK 448 at 1 kg, 3DXTech CarbonX PEEK+CF10 598 at 2 kg and FibreX PEEK+GF20 695 at 1 kg, Luvocom 3F PEEK CF 9676 648 at 2 kg[6][7][12][13]
Market availability1–5Niche, a handful of specialist brands[9][2]Niche, a handful of specialist brands[6][7]
Spool sizes & diameters1.75 and 2.85 mm; 0.05, 0.1, 0.25, 0.5, 1 and 2 kg spools[9][2][10][11]1.75 and 2.85 mm; 200 g to 2 kg spools[6][7]
Typical applicationsCapacitive touch surfaces, low-current traces, EMI shielding and static-safe fixtures[1]Stiff aerospace and oil-and-gas parts where PEEK alone is not rigid enough[5]
Printing Parameters
Enclosure / chamber requirement1–5Open frame is fine[1]Actively heated chamber required[14][15]
Warping tendency1–5Not documentedModerate — needs adhesion aid or draught shield; the fibre cuts PEEK's crystallisation shrinkage[5]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile[1]Expert / industrial hardware only[14][15]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass acceptable; hardened steel for volume work[1]Hardened steel required[5]
Abrasiveness1–5Moderately abrasive — conductive carbon filler[1]Highly abrasive — standard CF composite[5]
Nozzle clog risk1–5Low — Proto-pasta states the carbon-filled grade prints on standard PLA settings with no special nozzle required[1]High — jams from moisture, heat creep or particles; 3DXTech adds a hardened 0.4 mm minimum nozzle and 0.25 mm layers to the mandatory 120 °C pre-dry[16][17]
Moisture Behaviour
Equilibrium moisture content at ~50 % RH%Not documented0.06 in 24 h on extruded CF30 stock (ASTM D570)[8]
Effect of moisture on strengthPolymaker rates PLA low-sensitivity and publishes no dry-versus-conditioned figures; absorbed water flashes to steam and shows as bubbling and poor layer adhesion[18]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[16]
Mechanical Properties
Tensile strength (XY)MPaNot documented105 at break (printed XY, ISO 527, CF10); 121 at yield on extruded CF30 stock (ASTM D638)[5][8]
Young's modulusMPaNot documented8100 (printed XY, ISO 527, CF10) — more than double unfilled PEEK; 6343 on extruded CF30 stock (ASTM D638)[5][8]
Elongation at break%Not documented3 at break (printed XY, ISO 527), against 28 for unfilled PEEK[5][19]
Flexural strengthMPaNot documented136 (printed XY, ISO 178, CF10); 193 on extruded CF30 stock (ASTM D790)[5][8]
Flexural modulusMPaNot documented8300 (printed XY, ISO 178, CF10); 7171 on extruded CF30 stock (ASTM D790)[5][8]
Other impact dataNot documentedIzod notched 61.9 J/m on extruded CF30 stock, converted from 1.16 ft-lb/in (ASTM D256)[8]
Brittleness1–5Brittle — snaps with little warning; carbon-black loading at conductive levels embrittles PLA[1]Brittle — snaps with little warning; elongation falls from 28 % to 3 %[5][19]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documentedRockwell M107 on extruded PEEK-CF30 stock (ASTM D785), against M100 unfilled[8][20]
Creep resistance / sustained load1–5Not documentedExcellent — holds load for years. Ensinger rates carbon-fibre PEEK stock as very highly creep resistant and specifies 260 °C continuous service[8]
Fatigue / repeated-flex resistance1–5Not documentedGood. Victrex rates PEEK for long-term fatigue as well as creep; the fibre cuts elongation at break from 28 % to 3 %, which limits repeated large-strain flexing[21][5][19]
Elasticity / flexibility1–5Rigid[1]Rigid[5]
Thermal Properties
HDT at 0.45 MPa°CNot documented265 (printed XY, ISO 75 at 0.45 MPa, CarbonX PEEK+CF10) against 140 for unfilled PEEK[5][19]
HDT at 1.8 MPa°CNot documented316 on extruded CF30 stock, converted from 600 °F at 264 psi (ASTM D648)[8]
Glass transition (Tg)°CNot documented143 (DSC, CarbonX PEEK+CF10) — the fibre does not move the glass transition[5]
Melting point / Vicat°CNot documented334 melting on extruded CF30 stock, converted from 633 °F[8]
Continuous service temperature°CNot documented260 long-term on extruded CF30 stock, converted from 500 °F; 300 short term[8]
Thermal expansion (CTE)µm/m·KNot documented14.4 (extruded PEEK-CF30 stock, ASTM D696; source states 0.80e-5 in/in/°F) — about a third of unfilled PEEK[8][20]
Flammability / UL 94Not documentedUL 94 V-0 on the base resin; Ensinger lists extruded PEEK-CF30 stock as inherently flame resistant[19][8]
Environment & Chemical
Electrical & ESD propertiesConductive rather than dissipative — Proto-pasta sells the grade as electrically conductive composite PLA[1]Surface resistance above 10⁹ ohm/sq — not static-dissipative (ASTM D257)[5]
Health & Safety
Fume toxicity1–5Low hazard — minimal VOC and particle emission; none of these materials was in the chamber study[22]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[22]
Ventilation / filtration requirement1–5Open a window / occasional ventilation[22]Ventilated room or enclosure recommended[22]
Dust & fibre handling hazardConductive carbon filler is bound in the matrix; avoid inhaling sanding dust[1]Carbon fibre is bound in the matrix; sanding dust should not be inhaled[5]
Solvents & Solubility
Soluble inChloroform dissolves PLA-based grades, leaving the carbon black; TPU-based grades need DMF, NMP or THF. Laboratory reagents.[23][24]95–98 wt% sulphuric acid dissolves the matrix at 40–70 °C and leaves the fibre. Nothing else touches PEEK.[25][26]
Softened or crazed byAcetone and ethyl acetate plasticise a PLA-based grade; a TPU-based grade swells in toluene, esters and alcohols.[23][24]Concentrated nitric, hydrofluoric, hydrobromic and hydriodic acids attack it; DCM, DMSO and THF swell thin-walled sections.[27][26]
Solvent welding & smoothing agentNone — neither PLA nor TPU has a workshop-safe welding or smoothing solvent.[23][24]None — no solvent softens PEEK, so parts are joined thermally or mechanically, never chemically.[27][26]

Material entries describe families or representative grades, not an interchangeable specification for every spool. Test methods, orientations and conditions may differ. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.

Sources for this comparison

  1. Electrically Conductive Composite PLA — product page and technical data Proto-pasta · 2026-08 · tds
  2. Recreus product catalogue Recreus · 2026-08 · vendor
  3. Eel 3D Printing Filament Technical Specifications NinjaTek · 2026-08 · tds
  4. Koltron G1 Technical Data Sheet add:north · 2026-08 · tds
  5. CarbonX Carbon Fiber PEEK Technical Data Sheet v3 3DXTech · 2026-08 · tds
  6. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  7. 3D4Makers product catalogue 3D4Makers · 2026-08 · vendor
  8. TECAPEEK CF30 black (PEEK-CF30) — stock shape properties Ensinger · 2026-08 · tds
  9. Proto-pasta product catalogue Proto-pasta · 2026-08 · vendor
  10. Eel product page — durometer, print guidelines and price NinjaTek · 2026-08 · vendor
  11. add:north Koltron G1 product page add:north · 2026-08 · vendor
  12. IEMAI 3D CF-PEEK 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  13. IEMAI 3D GF-PEEK 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  14. Prusament PEI 1010 Technical Datasheet v1.0 Prusa Polymers · 2024-09 · tds
  15. Prusament PEI 1010 — material page Prusa Polymers · 2026-08 · doc
  16. CARBONX PEEK+CF10 — product page (print recommendations) 3DXTech · 2026-08 · doc
  17. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  18. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  19. ThermaX PEEK Technical Data Sheet v3 3DXTech · 2026-08 · tds
  20. TECAPEEK natural (PEEK) — stock shape properties Ensinger · 2026-08 · tds
  21. PEEK polymers — product overview Victrex · 2026-08 · doc
  22. Emissions of Ultrafine Particles and Volatile Organic Compounds from Commercially Available Desktop Three-Dimensional Printers with Multiple Filaments (Azimi et al.) Environmental Science & Technology 50(3) 1260-1268 · 2016-01 · paper
  23. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  24. Elastollan — Chemical properties: swelling and chemical resistance BASF · 2026-08 · tds
  25. The Effects of Sulfonated Poly(ether ether ketone) Ion Exchange Preparation Conditions on Membrane Properties Yee, Zhang & Ladewig, Membranes 3(3) 182–195 · 2013-07 · paper
  26. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  27. What solvents are not compatible with PEEK? — fluidics technical FAQ IDEX Health & Science · 2026-08 · doc