3D Printing Info

Filament comparison

PAHT-CF vs PC-CF

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

High-temperature CF nylon (PAHT-CF) guideCarbon-fibre PC (PC-CF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PAHT-CF comparisonsMore PC-CF comparisons
PAHT-CF vs PC-CF — documented properties and sources
PropertyHigh-temperature CF nylon (PAHT-CF)PACarbon-fibre PC (PC-CF)PC
Market snapshot
Listing priceUSD/kg; dated snapshots$59.98/kg median; $49.99–$69.98/kg across 2 dated product listings$62.58/kg median; $34.99–$117.33/kg across 6 dated product listings
Identity & Market
Base polymer / chemistryHigh-temperature carbon-fibre nylon. Bambu Lab's PAHT-CF and Polymaker's PA612-CF15 both use a long-chain polyamide matrix for lower moisture uptake than PA6[1][2]Polycarbonate reinforced with chopped carbon fibre[3][4]
Densityg/cm³1.03 (Polymaker PA612-CF15) and 1.06 (Bambu Lab), ISO 1183[1][2]1.22 (Prusament) and 1.36 (3DXTech), ISO 1183[3][4]
Typical priceUSD/kg1 kg-equivalent spools cluster near 60[1][5]1 kg-equivalent spools span 35–117; the middle of the market is about 63[6][7][8][9][10]
Price range across brandsUSD/kg50–70 across brands; Bambu Lab 50, Polymaker Fiberon PA612-CF15 70[1][5]35–117 across brands; Ambrosia 35, IEMAI 39, YXPOLYER 55, Spectrum PC CF 70, Prusament 94, 3DXTech 117[6][7][8][9][10]
Market availability1–5Available from several mainstream brands[1][5]Available from several mainstream brands[6][8][11]
Spool sizes & diameters1.75 mm; 0.5 and 1 kg spools[5][1]1.75 and 2.85 mm; 0.75, 0.8 and 1 kg spools[6][8]
Typical applicationsUnder-bonnet and near-motor parts needing 170 °C-plus heat deflection with less humidity drift than PA6[1][2]Stiff high-temperature structural parts — jigs, drone frames and under-bonnet brackets[3][4]
Diameter tolerance± mmNot documented±0.04 (Prusament PC Blend Carbon Fiber)[3]
Printing Parameters
Nozzle temperature°C260–290 (Bambu Lab)[1]285 ± 10 (Prusament)[3]
Bed temperature°CNot documented110 ± 10 (Prusament)[3]
Enclosure / chamber requirement1–5Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber[1]Enclosure required (passive)[3][12]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]Not documented
Part cooling fanNot documentedOff — Prusa allows 0–20 % and warns cooling significantly reduces interlayer adhesion[3]
Bed surface & adhesion aidPEI sheet with a glue stick, or a dedicated adhesive such as Magigoo[13][14]PEI with a glue stick or a commercial adhesive[15]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s8 at Bambu Lab's 100 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[1][16]Not documented
Warping tendency1–5Not documentedHigh — enclosure needed for reliable large parts; the fibre reduces warping against unfilled PC[3][12]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[13]Needs a specific surface plus adhesive[15][17]
Stringing / oozing tendency1–5Moderate — retraction tuning needed[14]Moderate — retraction tuning needed; Polymaker flags stringing as a common PC problem[17]
Overall printing difficulty1–5Expert / industrial hardware only[1][18]Advanced — enclosure, hardware upgrades, tuning; hardened nozzle mandatory[12][3]
Extruder requirement0.6 mm nozzle recommended by Bambu Lab; 0.4 and 0.8 also supported[1]Not documented
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required — Polymaker measures brass nozzle life at about 9 h on PA612-CF15 and recommends hardened steel or ruby[2]Hardened steel required[12]
Abrasiveness1–5Highly abrasive — standard CF composite; Polymaker puts brass nozzle life at roughly 9 h on PA612-CF15[2]Highly abrasive — standard CF composite[12]
Nozzle clog risk1–5High — jams from moisture, heat creep or particles[18]High — jams from moisture, heat creep or particles; PC already absorbs water from the air and 3DXTech adds a hardened 0.4 mm minimum nozzle, 0.25 mm layers and a 120 °C pre-dry[19][15][20]
Heat-creep / jam sensitivity1–5Moderate — good heatbreak cooling needed[13]Slightly sensitive[15]
Hotend requirementMay require an all-metal hot end (Simplify3D)[13]All-metal hot end required (Simplify3D)[15]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5High (0.8–2 %) — 0.88 % saturated at 25 °C / 55 % RH for Bambu Lab PAHT-CF, a third of its PA6-CF; Polymaker's PA612-CF15 reaches 2.2 % equilibrium[1][2][21]Low (0.1–0.3 %) — the PC matrix takes up 0.15–0.25 % and 3DXTech specifies a 120 °C, 4 h pre-dry[22][23][19]
Equilibrium moisture content at ~50 % RH%0.88 saturated at 25 °C / 55 % RH (Bambu Lab PAHT-CF); 2.2 equilibrium (Polymaker PA612-CF15)[1][2]0.11 after 7 days at 24 °C / 22 % RH (Prusa Polymers)[3]
Drying temperature & time80 °C for 8–12 h (Bambu Lab)[1]Not documented
Symptoms when wetNot documentedBubbling and popping at the nozzle, stringing and a rough surface[18]
Effect of moisture on strengthPolymaker publishes dry and wet printed blocks for PA612-CF15 itself: at 2.57 % moisture tensile falls only 91.9 → 83.1 MPa and modulus 5137 → 3991 MPa — the PA612 backbone absorbs far less than PA6[2][24]No dry-versus-conditioned figures are published. Polymaker calls PC highly hygroscopic and requires a 70–80 °C dry for 6–8 h; run wet, the loss shows as surface defects and poor layer adhesion[17][18]
Storage requirementSealed below 20 % RH with desiccant[18]Airtight containers with desiccant to prevent reabsorption[17]
Hydrolysis at melt temperaturePolymaker specifies an 80–100 °C dry and storage below 20 % RH; no molecular-weight loss figure is published, and the wet data it does publish is conditioning rather than melt hydrolysis[25][26]Not documented
Mechanical Properties
Tensile strength (XY)MPa92 ± 7 (Bambu Lab) and 91.9 ± 2.0 (Polymaker PA612-CF15, dry/annealed) printed XY, ISO 527; the Polymaker grade only falls to 83.1 ± 2.2 conditioned to 2.57 % moisture[1][2]64 ± 3 printed horizontal and 70 ± 3 printed vertical at yield, ISO 527-1 (Prusament); 3DXTech quotes 73 at break[3][4]
Young's modulusMPa3860 ± 230 (Bambu Lab) and 5137 ± 192 (Polymaker PA612-CF15, dry) printed XY, ISO 527; Polymaker 3991 ± 137 conditioned[1][2]2600 printed horizontal and 3200 printed vertical, ISO 527-1 (Prusament); 3DXTech quotes 6980[3][4]
Elongation at break%2.6 ± 0.2 dry (Polymaker PA612-CF15) to 8.4 ± 1.8 (Bambu Lab) printed XY, ISO 527; Polymaker 4.1 ± 0.3 conditioned[1][2]4.6 at yield printed horizontal (Prusament); 3DXTech quotes 2.1 at break[3][4]
Flexural strengthMPaNot documented94 ± 3 printed horizontal and 130 ± 2 printed vertical, ISO 178 (Prusament); 3DXTech quotes 85[3][4]
Flexural modulusMPa4230 ± 210 printed XY, ISO 178 (Bambu Lab)[1]3500 printed horizontal and 4200 printed vertical, ISO 178 (Prusament); 3DXTech quotes 6540[3][4]
Charpy impact, notchedkJ/m²8.1 ± 0.8 printed XY dry and 7.7 ± 0.5 conditioned, ISO 179 notched (Polymaker PA612-CF15)[2]12 ± 1 printed horizontal and 17 ± 2 printed vertical, ISO 179-1 notched (Prusament)[3]
Other impact dataCharpy unnotched 57.5 ± 3.4 and notched 22.8 ± 1.8 printed XY (Bambu Lab, ISO 179)[1]Charpy unnotched 32 ± 5 printed horizontal and 35 ± 4 printed vertical (Prusament, ISO 179-1)[3]
Layer adhesion / Z tensileMPa47 ± 5 (Bambu Lab) and 48.3 ± 3.9 (Polymaker PA612-CF15, dry) printed Z, ISO 527; Polymaker 35.6 ± 3.0 conditioned[1][2]23 ± 2 (Prusa Polymers interlayer adhesion test) — above the 21 ± 2 of unfilled Prusament PC Blend[3][23]
Brittleness1–5Moderate[1]Moderate[3][4]
Hardness (scale-specific)Shore A / Shore D / RockwellRockwell M88 / R117 on extruded PA66-GF30 stock (ASTM D785); no figure is published for a carbon-fibre long-chain nylon filament[27]83 Shore D (Prusa Polymers method), against 79 for unfilled Prusament PC Blend[3][23]
Creep resistance / sustained load1–5Good. Ensinger rates its PA66-CF30 compound for sustained static and dynamic load with 110 °C continuous service; the long-chain PA612 matrix takes up 0.88 % at saturation, a third of the same maker's PA6-CF, so it holds dimension better[28][2]Excellent — holds load for years. Room-temperature tensile creep of moulded unfilled PC ran unbroken at 41 MPa until the test was stopped; short carbon fibre raises the flexural modulus from about 2.1 to 3.5-6.5 GPa, which reduces creep strain further[29][3]
Fatigue / repeated-flex resistance1–5Good. Ensinger states carbon-filled PA66 compounds have improved fatigue strength in tension, flexure and compression[28]Good. No fatigue test data was found for a carbon-fibre PC filament; the unfilled polymer is rated Good on the same scale[29]
Elasticity / flexibility1–5Rigid[1]Rigid[3]
Z strength as % of XY%51 (Bambu Lab) to 53 (Polymaker PA612-CF15), printed[1][2]Not documented
Thermal Properties
HDT at 0.45 MPa°C175 (Polymaker PA612-CF15) and 194 (Bambu Lab), ISO 75 at 0.45 MPa[1][2]114 (ISO 75, 0.45 MPa, Prusament)[3]
HDT at 1.8 MPa°C114 (Polymaker PA612-CF15) and 170 (Bambu Lab), ISO 75 at 1.8 MPa[1][2]106 (ISO 75, 1.8 MPa, Prusament), against 93 for unfilled Prusament PC Blend[3][23]
Glass transition (Tg)°C70 (Bambu Lab, DSC)[1]127 (3DXTech, DSC)[4]
Melting point / Vicat°C210 (Polymaker PA612-CF15) and 225 (Bambu Lab) melting, DSC; Vicat 206 (Polymaker)[1][2]Not documented
Continuous service temperature°CNot documented113 — Prusa publishes this as the temperature resistance of Prusament PC Blend[23]
Flammability / UL 94Flammable; no UL 94 rating published for the grades surveyed[25]Not documented
Environment & Chemical
UV resistance1–5Months outdoors before embrittlement — unstabilised polyamide yellows under UV[14]Degrades within weeks outdoors unless stabilised[17]
Chemical resistanceWithstands oils, fuels and alkalis[14]Withstands oils, solvents and fuels; Polymaker rates it good against weak acids[17]
Water / humidity resistance in service1–5Absorbs water, properties shift — less than PA6 but more than PA12[24][1]Not documented
Food contactNot food-contact certified as filament[14]Bisphenol-A polycarbonate is not offered as food-contact filament[17]
Biodegradability / compostabilityNot biodegradable[14]Not biodegradable[17]
RecyclabilityNot accepted in household plastic collection[14]Mechanically recyclable but not accepted in household plastic collection[17]
Electrical & ESD propertiesSurface resistivity above 10¹² ohm — insulating (Polymaker PA612-CF15, ANSI/ESD S11.11)[2]Surface resistance above 10⁹ ohm/sq — not static-dissipative (3DXTech, ASTM D257)[4]
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[30]Moderate — measurable VOCs and UFPs, ventilation advised[30]
VOC emission rateµg/minUp to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study[30]Not documented
Ultrafine-particle emission rateparticles/min≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured[30]≈4 × 10¹⁰ median — the highest ultrafine-particle rate of the nine filaments in the chamber study, above every ABS tested[30]
Hazardous species emittedCaprolactam, at up to 180 µg/min from nylon filament[30]Not documented
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[30]Ventilated room or enclosure recommended[30][12]
Dust & fibre handling hazardFibre is bound in the matrix; sanding dust should not be inhaled[25]Carbon fibre is bound in the matrix; sanding dust should not be inhaled[4]
Post-Processing
Sanding & machiningSands poorly — gums rather than powders[13]Sands and machines well; the toughness means it cuts rather than chips[15]
Gluing & solvent weldingCyanoacrylate; no common solvent welds polyamide[13]Cyanoacrylate; dichloromethane solvent-welds PC but is a laboratory reagent[15]
Vapour / chemical smoothingNo practical vapour smoothing[13]No practical vapour smoothing[15]
Support material pairingNot documentedPrints its own supports; 3DXTech sells a dedicated PC break-away support[15]
Solvents & Solubility
Soluble inFormic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[31]Dichloromethane and chloroform dissolve the matrix and leave the fibre; DMF and dioxane do the same (Covestro).[32]
Softened or crazed byZinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[31]Methanol, butyl acetate, ether, 1 % NaOH and phthalate plasticisers stress-crack it; acetone, MEK and xylene swell it.[32]
Solvent welding & smoothing agentNone — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[31]Dichloromethane cement welds the resin, but the fibre keeps the joint from flowing closed. Controlled carcinogen.[33]

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. Bambu Filament Technical Data Sheet — PAHT-CF Bambu Lab · 2026-08 · tds
  2. Fiberon PA612-CF15 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  3. Prusament PC Blend Carbon Fiber Technical Datasheet v2.0 Prusa Polymers · 2023-04 · tds
  4. CarbonX Carbon Fiber ezPC Polycarbonate Technical Data Sheet 3DXTech · 2026-08 · tds
  5. Polymaker product catalogue Polymaker · 2026-08 · vendor
  6. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  7. Spectrum PC CF Carbon Black, 1.75 mm / 250 g 3DJAKE · 2026-08 · vendor
  8. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  9. IEMAI CF-PC 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  10. YXPOLYER PC CF product page YXPOLYER · 2026-08 · vendor
  11. Filastruder product catalogue Filastruder · 2026-08 · vendor
  12. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  13. Nylon — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  14. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  15. Polycarbonate — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  16. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  17. PC — material basics Polymaker Wiki · 2026-08 · doc
  18. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  19. CARBONX ezPC+CF — product page (print recommendations) 3DXTech · 2026-08 · doc
  20. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  21. Bambu Filament Technical Data Sheet — PA6-CF Bambu Lab · 2026-08 · tds
  22. Bambu Filament Technical Data Sheet V2.0 — PC Bambu Lab · 2026-08 · tds
  23. Prusament PC Blend Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  24. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  25. Fiberon PA6-CF20 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  26. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  27. TECAMID 66 GF30 black (PA66-GF30) — stock shape properties Ensinger · 2026-08 · tds
  28. TECACOMP PA66 CF30 black — injection-moulding compound Ensinger · 2026-08 · tds
  29. Experimental data for creep and dynamic mechanical properties of polycarbonate and polycarbonate/ABS Data in Brief 42:108264 · 2022-06 · paper
  30. 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
  31. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  32. Makrolon — The chemical resistance (Makrolon 2800, 6 days at 23 °C and 50 °C) Covestro · 2016-12 · tds
  33. Weld-On 3 Acrylic Plastic Cement — technical data sheet (shipped as dichloromethane) IPS Corporation · 2002-07 · tds