3D Printing Info

Filament comparison

PA11 vs PETG-CF

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

PA11 (Nylon 11) guideCarbon-fibre PETG (PETG-CF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PA11 comparisonsMore PETG-CF comparisons
PA11 vs PETG-CF — documented properties and sources
PropertyPA11 (Nylon 11)PACarbon-fibre PETG (PETG-CF)PETG
Market snapshot
Listing priceUSD/kg; dated snapshots$194.98/kg median; $194.98–$194.98/kg across 1 dated product listings$29.99/kg median; $16.00–$74.22/kg across 11 dated product listings
Identity & Market
Base polymer / chemistryPolyamide 11, polymerised from castor-oil-derived aminoundecanoic acid — a bio-based nylon[1][2]PETG reinforced with chopped carbon fibre[3][4]
Densityg/cm³1.02 (ISO 1183)[1]1.25 (Bambu Lab) to 1.34 (3DXTech), ISO 1183; Prusament 1.27[3][5][4]
Typical priceUSD/kgNot documented1 kg-equivalent spools span 16–74; the middle of the market is about 29[3][6][7][8][9][10][11][12]
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[13][3][14][6][7][8][9][10][11][12]
Market availability1–5Niche, a handful of specialist brands[2]Stocked by most mainstream brands[3][14][6][13]
Spool sizes & diameters1.75 mm; 1 kg spools[2]1.75 and 2.85 mm; 0.75 and 1 kg spools[14][3]
Typical applicationsTough, chemically resistant functional parts; Prusa targets it at impact-loaded and vibration-loaded components[2]Stiff functional parts and fixtures where PETG's toughness is traded for rigidity and a matte finish[3][4]
Diameter tolerance± mm±0.02 (Prusament)[1]±0.02 (Prusament)[4]
Printing Parameters
Nozzle temperature°C275 ± 10 (Prusament)[1]240–270 (Bambu Lab); 265 ± 10 (Prusament)[3][4]
Bed temperature°C100 ± 10 (Prusament)[1]65–75 (Bambu Lab); 90 ± 10 (Prusament)[3][4]
Enclosure / chamber requirement1–5Enclosure required (passive) — Prusament specifies a 55 ± 5 °C chamber[1]Open frame fine; draught shield helps — Bambu Lab specifies a 35–50 °C chamber[3]
Recommended chamber temperature°C55 ± 5 (Prusament)[1]35–50 (Bambu Lab)[3]
Part cooling fanNot documented0–60 % (Bambu Lab); 50 % (Prusament)[3][4]
Bed surface & adhesion aidPA nylon sheet (Prusament)[1]Textured PEI or engineering plate with glue (Bambu Lab)[3]
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[3]
Stringing / oozing tendency1–5Not documentedSlight — the fibre reduces stringing against unfilled PETG[3][16]
Overall printing difficulty1–5Advanced — enclosure, hardware upgrades, tuning[1][17]Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[3]
Extruder requirementPrusa printed its test specimens with a high-flow CHT nozzle[1]Not documented
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely for unfilled grades[17]Hardened steel required[3]
Abrasiveness1–5Non-abrasive when unfilled[17]Highly abrasive — standard CF composite[3]
Nozzle clog risk1–5High — jams from moisture, heat creep or particles[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][20]
Heat-creep / jam sensitivity1–5Not documentedSlightly sensitive[16]
Hotend requirementNot documentedHardened steel nozzle; no high-temperature hot-end needed[3][16]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5High (0.8–2 %) — Prusa measures 0.46 % after 7 days at 22 % RH, but PA11 sits between PA12 and PA6 in the family[1][18]Low — 0.30 % saturated at 25 °C / 55 % RH (Bambu Lab)[3]
Equilibrium moisture content at ~50 % RH%0.26 after 24 h and 0.46 after 7 days (Prusa Polymers method)[1]0.30 saturated at 25 °C / 55 % RH (Bambu Lab); Prusa measures 0.10 after 7 days at 22 % RH[3][4]
Drying temperature & timeNot documented65 °C for 8 h (Bambu Lab)[3]
Symptoms when wetPopping and cracking during extrusion, then hard-to-diagnose defects[21]Bubbling and popping at the nozzle, stringing and a rough surface[18]
Effect of moisture on strengthPrusa publishes no dry-versus-conditioned columns; the CoPA reference shows the PA-family response — stiffness and strength fall sharply, impact and elongation rise[21][22]No dry-versus-conditioned figures published; Bambu Lab states PETG-CF must be properly dried before printing and stored dry after use[3][18]
Storage requirementSealed below 20 % RH with desiccant[18]Sealed with desiccant; Bambu Lab says store dry after use[3][18]
Mechanical Properties
Tensile strength (XY)MPa38.3 ± 0.8 printed horizontal and 39.5 ± 0.5 printed vertical at yield, ISO 527-1[1]35 ± 5 (Bambu Lab) and 47 ± 2 at yield (Prusament) printed XY, ISO 527; 56 at break for 3DXTech[3][4][5]
Young's modulusMPa1200 printed, both orientations, ISO 527-1[1]2460 ± 230 (Bambu Lab) and 1700 (Prusament) printed XY, ISO 527[3][4]
Elongation at break%5.6 ± 0.1 at yield, printed, ISO 527-1[1]4.3 at yield (Prusament, printed XY, ISO 527); 3 at break for 3DXTech[4][5]
Flexural strengthMPaNot documented68 ± 3 printed horizontal, ISO 178 (Prusament)[4]
Flexural modulusMPa1100 printed horizontal and 1000 printed vertical, ISO 178[1]2300 printed horizontal, 3100 printed vertical, ISO 178 (Prusament)[4]
Charpy impact, notchedkJ/m²12.9 ± 2.1 printed horizontal and 11.7 ± 1.2 printed vertical, ISO 179-1 notched[1]Not documented
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[4][15]
Layer adhesion / Z tensileMPa32 ± 1 (Prusa Polymers interlayer adhesion test) — the highest interlayer figure Prusa publishes for any of its filaments[1]29 ± 4 printed Z (Bambu Lab, ISO 527); 18 ± 3 by Prusa's interlayer adhesion test; 10.7 on My Tech Fun bars[3][4][15]
Brittleness1–5Tough — absorbs impact, yields before breaking[1]Brittle — snaps with little warning[5]
Hardness (scale-specific)Shore A / Shore D / Rockwell70 Shore D (Prusa Polymers method)[1]77 Shore D (Prusa Polymers method)[4]
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 resistance1–5Excellent — living hinges viable[17]Moderate — no CF-grade S-N curve; unfilled printed PETG ran 79 000–193 000 cycles at 30 % of tensile strength[23]
Elasticity / flexibility1–5Semi-flexible[1]Rigid[3]
Z strength as % of XY%84 — Prusa publishes a tensile anisotropy coefficient of 0.84, the ratio of Z to XY tensile strength[1]83 (Bambu Lab, printed Z against XY tensile)[3]
Thermal Properties
HDT at 0.45 MPa°C58.7 (ISO 75, 0.45 MPa)[1]74 (Bambu Lab) and 96 (Prusament), ISO 75 at 0.45 MPa[3][4]
HDT at 1.8 MPa°C49.9 (ISO 75, 1.8 MPa)[1]68 (Bambu Lab) and 80 (Prusament), ISO 75 at 1.8 MPa[3][4]
Glass transition (Tg)°CNot documented68 (Bambu Lab) and 80 (3DXTech), DSC[3][5]
Melting point / Vicat°CNot documented225 melting (Bambu Lab, DSC) — the carbon fibre lets the PET fraction crystallise[3]
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[3]
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]
Water / humidity resistance in service1–5Absorbs water, properties shift[21]Not documented
Food contactNot documentedNot certified for food contact[24]
Biodegradability / compostabilityBio-based — the monomer comes from castor oil[2]Not 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)[5]
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; total VOC reached nearly 200 µg/min, the highest of the nine filaments tested[25]Not documented
Ultrafine-particle emission rateparticles/min≈2 × 10⁸ median — low for ultrafine particles despite the highest VOC mass of any filament tested[25]Not documented
Hazardous species emittedCaprolactam, at up to 180 µg/min from nylon filament — the largest single-VOC emission rate measured in the study[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[5]
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)[3]
Dimensional accuracy & detailNot documentedMatte finish hides layer lines; stringing is reduced against unfilled PETG[3]
Solvents & Solubility
Soluble inDissolved at 23 °C by formic acid, phenol, m-cresol, 96 % sulphuric acid or hexafluoroisopropanol — all laboratory reagents.[26][27]No common workshop solvent; dichloromethane — a carcinogen — dissolves the matrix surface, 1,2-dichloroethane destroys it in a week.[28][29]
Softened or crazed byMineral acids, oxidants, halogens and zinc chloride solutions attack the amide bond; ordinary solvents do not (BASF, PA6/66).[26]Acetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[28]
Solvent welding & smoothing agentNone — nylon's only solvents are formic acid, phenol and HFIP, all of which degrade the part they wet.[26]Dichloromethane reaches only the resin, so the fibre is left standing proud of the surface. Controlled carcinogen.[29]

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. Prusament PA11 Technical Datasheet v1.0 Prusa Polymers · 2026-07 · tds
  2. Prusament PA11 — material page Prusa Polymers · 2026-08 · doc
  3. Bambu Filament Technical Data Sheet — PETG-CF Bambu Lab · 2026-08 · tds
  4. Prusament PETG Carbon Fiber Technical Datasheet Prusa Polymers · 2026-08 · tds
  5. CarbonX Carbon Fiber PETG Technical Data Sheet 3DXTech · 2026-08 · tds
  6. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  7. SUNLU PETG-CF (PETG Carbon Fiber) 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  8. Fibreheart PETG-CF Pro Filament product page Siraya Tech · 2026-08 · vendor
  9. IEMAI CF-PETG 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  10. Reli3D Carbon Fiber PETG Filament 1.75 mm, 1 kg Reli3D (Amazon US) · 2026-08 · vendor
  11. PET-G CF15 Sakata 3D Filaments · 2026-08 · vendor
  12. Filament PM CFJet technical data sheet (TDS CFJet ENG.pdf) Filament PM (Plasty Mladec) · 2026-08 · tds
  13. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  14. 3DXTech product catalogue 3DXTech · 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. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  18. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  19. CARBONX PETG+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. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  22. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  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. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  28. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  29. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc