3D Printing Info

Filament comparison

PA aramid vs PETG-CF

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

Aramid-fibre nylon guideCarbon-fibre PETG (PETG-CF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PA aramid comparisonsMore PETG-CF comparisons
PA aramid vs PETG-CF — documented properties and sources
PropertyAramid-fibre nylonPACarbon-fibre PETG (PETG-CF)PETG
Market snapshot
Listing priceUSD/kg; dated snapshotsNot documented$29.99/kg median; $16.00–$74.22/kg across 11 dated product listings
Identity & Market
Base polymer / chemistryAramid-fibre reinforced polyamide[1]PETG reinforced with chopped carbon fibre[2][3]
Densityg/cm³Not documented1.25 (Bambu Lab) to 1.34 (3DXTech), ISO 1183; Prusament 1.27[2][4][3]
Typical priceUSD/kgNot documented1 kg-equivalent spools span 16–74; the middle of the market is about 29[2][5][6][7][8][9][10][11]
Price range across brandsUSD/kgNot documented16–74 across brands; ELEGOO 16 in a 5 kg pack, Reli3D 17, SUNLU 20, IEMAI 22, Siraya Tech 25, Bambu Lab 32, Sakata 3D 53, 3DXTech 67, Prusament 70, Filament PM 74 on 0.5 kg spools[12][2][13][5][6][7][8][9][10][11]
Market availability1–5Special order, 1–2 makers worldwide — no aramid-filled nylon filament was found in any catalogue searched; the aramid filaments that do exist in the retail market use an ASA matrix[14][13]Stocked by most mainstream brands[2][13][5][12]
Spool sizes & diametersNot documented1.75 and 2.85 mm; 0.75 and 1 kg spools[13][2]
Typical applicationsNot documentedStiff functional parts and fixtures where PETG's toughness is traded for rigidity and a matte finish[2][3]
Diameter tolerance± mmNot documented±0.02 (Prusament)[3]
Printing Parameters
Nozzle temperature°CNot documented240–270 (Bambu Lab); 265 ± 10 (Prusament)[2][3]
Bed temperature°CNot documented65–75 (Bambu Lab); 90 ± 10 (Prusament)[2][3]
Enclosure / chamber requirement1–5Enclosure required (passive) — as for every nylon[1]Open frame fine; draught shield helps — Bambu Lab specifies a 35–50 °C chamber[2]
Recommended chamber temperature°CNot documented35–50 (Bambu Lab)[2]
Part cooling fanNot documented0–60 % (Bambu Lab); 50 % (Prusament)[2][3]
Bed surface & adhesion aidNot documentedTextured PEI or engineering plate with glue (Bambu Lab)[2]
Maximum volumetric flow (mm³/s; see test conditions)mm³/sNot documented11.5 on My Tech Fun's Bambu Lab PETG-CF profile[15]
Bed-adhesion difficulty1–5Not documentedNeeds the right surface or a thin adhesive[2]
Stringing / oozing tendency1–5Not documentedSlight — the fibre reduces stringing against unfilled PETG[2][16]
Overall printing difficulty1–5Not documentedIntermediate — dry filament and a tuned profile; hardened nozzle mandatory[2]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required — no aramid-filled nylon datasheet was obtainable; Polymaker measures about 9 h of brass nozzle life on its fibre-filled nylons[17]Hardened steel required[2]
Abrasiveness1–5Highly abrasive — fibre-reinforced nylon composite[17]Highly abrasive — standard CF composite[2]
Nozzle clog risk1–5High — jams from moisture, heat creep or particles; nylon already needs a drybox and Prusa names kevlar among the fibres that raise nozzle-clogging risk[18]Moderate — needs dry filament and a clean nozzle; 3DXTech specifies a hardened 0.4 mm minimum nozzle and 0.25 mm layers or higher, and Prusa lists composites as a higher clogging risk[19][18]
Heat-creep / jam sensitivity1–5Not documentedSlightly sensitive[16]
Hotend requirementNot documentedHardened steel nozzle; no high-temperature hot-end needed[2][16]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Very high (>2 %) — the polyamide matrix governs uptake[20]Low — 0.30 % saturated at 25 °C / 55 % RH (Bambu Lab)[2]
Equilibrium moisture content at ~50 % RH%Not documented0.30 saturated at 25 °C / 55 % RH (Bambu Lab); Prusa measures 0.10 after 7 days at 22 % RH[2][3]
Drying temperature & timeNot documented65 °C for 8 h (Bambu Lab)[2]
Symptoms when wetNot documentedBubbling and popping at the nozzle, stringing and a rough surface[20]
Effect of moisture on strengthPolymaker's printed dry-versus-wet blocks for its CoPA nylon show what conditioning does to the family: tensile 78.0 → 34.3 MPa and modulus 2703 → 724 MPa, with notched Charpy rising 6.9 → 27.7 kJ/m². Fibre reinforcement reduces but does not remove the effect[21][22]No dry-versus-conditioned figures published; Bambu Lab states PETG-CF must be properly dried before printing and stored dry after use[2][20]
Storage requirementNot documentedSealed with desiccant; Bambu Lab says store dry after use[2][20]
Mechanical Properties
Tensile strength (XY)MPaNot documented35 ± 5 (Bambu Lab) and 47 ± 2 at yield (Prusament) printed XY, ISO 527; 56 at break for 3DXTech[2][3][4]
Young's modulusMPaNot documented2460 ± 230 (Bambu Lab) and 1700 (Prusament) printed XY, ISO 527[2][3]
Elongation at break%Not documented4.3 at yield (Prusament, printed XY, ISO 527); 3 at break for 3DXTech[3][4]
Flexural strengthMPaNot documented68 ± 3 printed horizontal, ISO 178 (Prusament)[3]
Flexural modulusMPaNot documented2300 printed horizontal, 3100 printed vertical, ISO 178 (Prusament)[3]
Other impact dataNot documentedCharpy unnotched 29 ± 6 printed horizontal and 43 ± 8 printed vertical (Prusament, ISO 179-1); Izod 4.91 kJ/m² on My Tech Fun bars[3][15]
Layer adhesion / Z tensileMPaNot documented29 ± 4 printed Z (Bambu Lab, ISO 527); 18 ± 3 by Prusa's interlayer adhesion test; 10.7 on My Tech Fun bars[2][3][15]
Brittleness1–5Not documentedBrittle — snaps with little warning[4]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documented77 Shore D (Prusa Polymers method)[3]
Creep resistance / sustained load1–5Not documentedBelow average — a 12 mm bar sagged to 16.4 mm over 5 days at 1.25 kg, less than plain PETG's 19.4[15]
Fatigue / repeated-flex resistance1–5Not documentedModerate — no CF-grade S-N curve; unfilled printed PETG ran 79 000–193 000 cycles at 30 % of tensile strength[23]
Elasticity / flexibility1–5Not documentedRigid[2]
Z strength as % of XY%Not documented83 (Bambu Lab, printed Z against XY tensile)[2]
Thermal Properties
HDT at 0.45 MPa°CNot documented74 (Bambu Lab) and 96 (Prusament), ISO 75 at 0.45 MPa[2][3]
HDT at 1.8 MPa°CNot documented68 (Bambu Lab) and 80 (Prusament), ISO 75 at 1.8 MPa[2][3]
Glass transition (Tg)°CNot documented68 (Bambu Lab) and 80 (3DXTech), DSC[2][4]
Melting point / Vicat°CNot documented225 melting (Bambu Lab, DSC) — the carbon fibre lets the PET fraction crystallise[2]
Continuous service temperature°CNot documented77 — loaded bars begin to move at this temperature, against 61 for Bambu Lab PETG Basic[15]
Flammability / UL 94Not documentedFlammable; no UL 94 rating published[2]
Environment & Chemical
UV resistance1–5Not documentedModerate — a season or two; the carbon fibre does not add UV stabilisation[24]
Chemical resistanceNot documentedWithstands acids, alkalis, oils and UV exposure, as for unfilled PETG[24]
Food contactNot documentedNot certified for food contact[24]
Biodegradability / compostabilityNot documentedNot biodegradable[24]
RecyclabilityNot documentedFibre-filled PETG is not accepted in household plastic collection[24]
Electrical & ESD propertiesNot documentedSurface resistance above 10⁹ ohm/sq — carbon fibre at this loading is not static-dissipative (3DXTech)[4]
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[25]Moderate — measurable VOCs and UFPs, ventilation advised[25]
VOC emission rateµg/minUp to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study[25]Not documented
Ultrafine-particle emission rateparticles/min≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured[25]Not documented
Hazardous species emittedCaprolactam, at up to 180 µg/min from nylon filament[25]Not documented
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[25]Open a window / occasional ventilation[25]
Dust & fibre handling hazardNot documentedCarbon fibre is bound in the matrix; sanding dust should not be inhaled[4]
Post-Processing
Sanding & machiningNot documentedSands to a matte finish more readily than unfilled PETG[16]
Gluing & solvent weldingNot documentedCyanoacrylate; no common solvent welds it[16]
Vapour / chemical smoothingNot documentedNo practical vapour smoothing[16]
Support material pairingNot documentedSupport for PLA or its own material (Bambu Lab)[2]
Dimensional accuracy & detailNot documentedMatte finish hides layer lines; stringing is reduced against unfilled PETG[2]
Solvents & Solubility
Soluble inFormic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[26]No common workshop solvent; dichloromethane — a carcinogen — dissolves the matrix surface, 1,2-dichloroethane destroys it in a week.[27][28]
Softened or crazed byZinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[26]Acetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[27]
Solvent welding & smoothing agentNone — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[26]Dichloromethane reaches only the resin, so the fibre is left standing proud of the surface. Controlled carcinogen.[28]

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. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  2. Bambu Filament Technical Data Sheet — PETG-CF Bambu Lab · 2026-08 · tds
  3. Prusament PETG Carbon Fiber Technical Datasheet Prusa Polymers · 2026-08 · tds
  4. CarbonX Carbon Fiber PETG Technical Data Sheet 3DXTech · 2026-08 · tds
  5. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  6. SUNLU PETG-CF (PETG Carbon Fiber) 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  7. Fibreheart PETG-CF Pro Filament product page Siraya Tech · 2026-08 · vendor
  8. IEMAI CF-PETG 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  9. Reli3D Carbon Fiber PETG Filament 1.75 mm, 1 kg Reli3D (Amazon US) · 2026-08 · vendor
  10. PET-G CF15 Sakata 3D Filaments · 2026-08 · vendor
  11. Filament PM CFJet technical data sheet (TDS CFJet ENG.pdf) Filament PM (Plasty Mladec) · 2026-08 · tds
  12. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  13. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  14. Polymaker product catalogue Polymaker · 2026-08 · vendor
  15. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  16. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  17. Fiberon PA6-CF20 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  18. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  19. CARBONX PETG+CF — product page (print recommendations) 3DXTech · 2026-08 · doc
  20. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  21. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  22. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  23. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  24. PETG — material basics Polymaker Wiki · 2026-08 · doc
  25. 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
  26. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  27. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  28. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc