3D Printing Info

Filament comparison

ASA-CF vs PETG-CF

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

Carbon-fibre ASA (ASA-CF) guideCarbon-fibre PETG (PETG-CF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-CF comparisonsMore PETG-CF comparisons
ASA-CF vs PETG-CF — documented properties and sources
PropertyCarbon-fibre ASA (ASA-CF)ASACarbon-fibre PETG (PETG-CF)PETG
Market snapshot
Listing priceUSD/kg; dated snapshots$36.99/kg median; $25.00–$90.00/kg across 5 dated product listings$29.99/kg median; $16.00–$74.22/kg across 11 dated product listings
Identity & Market
Base polymer / chemistryASA reinforced with chopped carbon fibre — Formfutura's ApolloX CF10 is 10 wt%[1][2][3]PETG reinforced with chopped carbon fibre[4][5]
Densityg/cm³1.02 (Bambu Lab), 1.1 (Formfutura ApolloX CF10) and 1.11 (3DXTech), ISO 1183[1][2][3]1.25 (Bambu Lab) to 1.34 (3DXTech), ISO 1183; Prusament 1.27[4][6][5]
Typical priceUSD/kg1 kg spools cluster near 37[7][8]1 kg-equivalent spools span 16–74; the middle of the market is about 29[4][9][10][11][12][13][14][15]
Price range across brandsUSD/kg25–90 across brands; IEMAI 25, Ambrosia 33, Bambu Lab 37, Polymaker Fiberon 40, 3DXTech 90[16][7][8][17][18]16–74 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[19][4][17][9][10][11][12][13][14][15]
Market availability1–5Available from several mainstream brands[7][8][17][16]Stocked by most mainstream brands[4][17][9][19]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[8][17][7]1.75 and 2.85 mm; 0.75 and 1 kg spools[17][4]
Typical applicationsOutdoor structural parts, drone and antenna mounts where stiffness and UV stability both matter[1][2]Stiff functional parts and fixtures where PETG's toughness is traded for rigidity and a matte finish[4][5]
Diameter tolerance± mmNot documented±0.02 (Prusament)[5]
Printing Parameters
Nozzle temperature°C250–280 (Bambu Lab)[1]240–270 (Bambu Lab); 265 ± 10 (Prusament)[4][5]
Bed temperature°C80–100 (Bambu Lab)[1]65–75 (Bambu Lab); 90 ± 10 (Prusament)[4][5]
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][20]Open frame fine; draught shield helps — Bambu Lab specifies a 35–50 °C chamber[4]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]35–50 (Bambu Lab)[4]
Part cooling fanFan on (Bambu Lab)[1]0–60 % (Bambu Lab); 50 % (Prusament)[4][5]
Bed surface & adhesion aidPEI sheet, BuildTak or an adhesion aid such as Magigoo (Polymaker); Simplify3D also lists Kapton tape and ASA slurry[21][22]Textured PEI or engineering plate with glue (Bambu Lab)[4]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s20 at Bambu Lab's 250 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[1][23]11.5 on My Tech Fun's Bambu Lab PETG-CF profile[24]
Warping tendency1–5Moderate — needs adhesion aid or draught shield; the fibre reduces warping against unfilled ASA[20]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[21]Needs the right surface or a thin adhesive[4]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[21]Slight — the fibre reduces stringing against unfilled PETG[4][25]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[20]Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[4]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[20]Hardened steel required[4]
Abrasiveness1–5Highly abrasive — standard CF composite[20]Highly abrasive — standard CF composite[4]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for fibre-filled composites and Simplify3D a higher tendency to clog[26][27]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[28][26]
Heat-creep / jam sensitivity1–5Slightly sensitive[22]Slightly sensitive[25]
Hotend requirementNo special hotend required[22]Hardened steel nozzle; no high-temperature hot-end needed[4][25]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.33 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Low — 0.30 % saturated at 25 °C / 55 % RH (Bambu Lab)[4]
Equilibrium moisture content at ~50 % RH%0.33 saturated at 25 °C / 55 % RH (Bambu Lab)[1]0.30 saturated at 25 °C / 55 % RH (Bambu Lab); Prusa measures 0.10 after 7 days at 22 % RH[4][5]
Drying temperature & time80 °C for 8 h (Bambu Lab)[1]65 °C for 8 h (Bambu Lab)[4]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[29]Bubbling and popping at the nozzle, stringing and a rough surface[29]
Effect of moisture on strengthNo dry-versus-conditioned figures are published; Polymaker groups the styrenics as moderate-sensitivity and absorbed water shows as bubbling and poor layer adhesion[29]No dry-versus-conditioned figures published; Bambu Lab states PETG-CF must be properly dried before printing and stored dry after use[4][29]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[29]Sealed with desiccant; Bambu Lab says store dry after use[4][29]
Mechanical Properties
Tensile strength (XY)MPa34 ± 3 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 48 at break and Formfutura 79 at 23 °C[1][2][3]35 ± 5 (Bambu Lab) and 47 ± 2 at yield (Prusament) printed XY, ISO 527; 56 at break for 3DXTech[4][5][6]
Young's modulusMPa4200 ± 270 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 5355 and Formfutura 7580[1][2][3]2460 ± 230 (Bambu Lab) and 1700 (Prusament) printed XY, ISO 527[4][5]
Elongation at break%9.6 ± 1.4 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 3 at break and Formfutura 1.8[1][2][3]4.3 at yield (Prusament, printed XY, ISO 527); 3 at break for 3DXTech[5][6]
Flexural strengthMPa72 ± 5 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 78[1][2]68 ± 3 printed horizontal, ISO 178 (Prusament)[5]
Flexural modulusMPa3740 ± 130 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 5210[1][2]2300 printed horizontal, 3100 printed vertical, ISO 178 (Prusament)[5]
Charpy impact, notchedkJ/m²6.2 ± 1.4 printed XY, ISO 179, notched (Bambu Lab) — a third of unfilled Bambu Lab ASA's 19.6[1][30]Not documented
Other impact dataCharpy unnotched 14.0 ± 2.2 printed XY (Bambu Lab, ISO 179), against 41.0 for unfilled Bambu Lab ASA[1][30]Charpy unnotched 29 ± 6 printed horizontal and 43 ± 8 printed vertical (Prusament, ISO 179-1); Izod 4.91 kJ/m² on My Tech Fun bars[5][24]
Layer adhesion / Z tensileMPa30 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 33 against 72 in XY[1]29 ± 4 printed Z (Bambu Lab, ISO 527); 18 ± 3 by Prusa's interlayer adhesion test; 10.7 on My Tech Fun bars[4][5][24]
Brittleness1–5Brittle — snaps with little warning[1][2]Brittle — snaps with little warning[6]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documented77 Shore D (Prusa Polymers method)[5]
Creep resistance / sustained load1–5Good — no creep test found; chopped carbon fibre lifts modulus to 4200 MPa against 2379–2450 for unfilled ASA[1][31]Below average — a 12 mm bar sagged to 16.4 mm over 5 days at 1.25 kg, less than plain PETG's 19.4[24]
Fatigue / repeated-flex resistance1–5Below average — no CF-grade S-N curve; notched Charpy falls to 6.2 kJ/m² against 19.6 for unfilled Bambu Lab ASA[1][30]Moderate — no CF-grade S-N curve; unfilled printed PETG ran 79 000–193 000 cycles at 30 % of tensile strength[32]
Elasticity / flexibility1–5Rigid[1]Rigid[4]
Z strength as % of XY%88 by tensile, 46 by flexural (printed, Bambu Lab)[1]83 (Bambu Lab, printed Z against XY tensile)[4]
Thermal Properties
HDT at 0.45 MPa°C110 (ISO 75, 0.45 MPa, Bambu Lab) against 100 for unfilled Bambu Lab ASA[1][30]74 (Bambu Lab) and 96 (Prusament), ISO 75 at 0.45 MPa[4][5]
HDT at 1.8 MPa°C102 (ISO 75, 1.8 MPa, Bambu Lab) against 92 for unfilled Bambu Lab ASA[1][30]68 (Bambu Lab) and 80 (Prusament), ISO 75 at 1.8 MPa[4][5]
Glass transition (Tg)°CNot documented68 (Bambu Lab) and 80 (3DXTech), DSC[4][6]
Melting point / Vicat°CNot documented225 melting (Bambu Lab, DSC) — the carbon fibre lets the PET fraction crystallise[4]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[33]77 — loaded bars begin to move at this temperature, against 61 for Bambu Lab PETG Basic[24]
Flammability / UL 94Flammable; no UL 94 rating published[30]Flammable; no UL 94 rating published[4]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; the acrylate rubber phase is unchanged by the fibre[34][21]Moderate — a season or two; the carbon fibre does not add UV stabilisation[35]
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[31]Withstands acids, alkalis, oils and UV exposure, as for unfilled PETG[35]
Food contactNot food safe[21]Not certified for food contact[35]
Biodegradability / compostabilityNot biodegradable[21]Not biodegradable[35]
RecyclabilityNot accepted in household plastic collection[21]Fibre-filled PETG is not accepted in household plastic collection[35]
Electrical & ESD propertiesSurface resistance above 10⁹ ohm/sq — not static-dissipative (3DXTech, ASTM D257)[2]Surface resistance above 10⁹ ohm/sq — carbon fibre at this loading is not static-dissipative (3DXTech)[6]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[36][20]Moderate — measurable VOCs and UFPs, ventilation advised[36]
Hazardous species emittedStyrene. Bambu Lab states ABS and ASA release harmful gases such as styrene at printing temperature, which can be toxic and cause dizziness or nausea. Azimi et al. measured styrene from every styrenic filament tested but did not test ASA itself[20][36]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[36][20]Open a window / occasional ventilation[36]
Dust & fibre handling hazardCarbon fibre is bound in the matrix; sanding dust should not be inhaled[2]Carbon fibre is bound in the matrix; sanding dust should not be inhaled[6]
Post-Processing
Sanding & machiningSands well and takes filler before painting[21]Sands to a matte finish more readily than unfilled PETG[25]
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[21]Not documented
Gluing & solvent weldingSolvent-welds with acetone[31]Cyanoacrylate; no common solvent welds it[25]
Vapour / chemical smoothingAcetone vapour smoothing works[31]No practical vapour smoothing[25]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[20]Support for PLA or its own material (Bambu Lab)[4]
Dimensional accuracy & detailMatte fibre-filled finish hides layer lines[1]Matte finish hides layer lines; stringing is reduced against unfilled PETG[4]
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone.[37][31]No common workshop solvent; dichloromethane — a carcinogen — dissolves the matrix surface, 1,2-dichloroethane destroys it in a week.[38][39]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[40]Acetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[38]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[39][31]Dichloromethane reaches only the resin, so the fibre is left standing proud of the surface. Controlled carcinogen.[39]

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 V1.0 — ASA-CF Bambu Lab · 2026-08 · tds
  2. CarbonX Carbon Fiber ASA Technical Data Sheet 3DXTech · 2026-08 · tds
  3. ApolloX CF10 Technical Data Sheet Formfutura · 2026-08 · tds
  4. Bambu Filament Technical Data Sheet — PETG-CF Bambu Lab · 2026-08 · tds
  5. Prusament PETG Carbon Fiber Technical Datasheet Prusa Polymers · 2026-08 · tds
  6. CarbonX Carbon Fiber PETG Technical Data Sheet 3DXTech · 2026-08 · tds
  7. ASA-CF — product page Bambu Lab US Store · 2026-08 · vendor
  8. Polymaker product catalogue Polymaker · 2026-08 · vendor
  9. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  10. SUNLU PETG-CF (PETG Carbon Fiber) 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  11. Fibreheart PETG-CF Pro Filament product page Siraya Tech · 2026-08 · vendor
  12. IEMAI CF-PETG 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  13. Reli3D Carbon Fiber PETG Filament 1.75 mm, 1 kg Reli3D (Amazon US) · 2026-08 · vendor
  14. PET-G CF15 Sakata 3D Filaments · 2026-08 · vendor
  15. Filament PM CFJet technical data sheet (TDS CFJet ENG.pdf) Filament PM (Plasty Mladec) · 2026-08 · tds
  16. Filastruder product catalogue Filastruder · 2026-08 · vendor
  17. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  18. IEMAI CF-ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  19. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  20. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  21. ASA — material basics Polymaker Wiki · 2026-08 · doc
  22. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  23. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  24. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  25. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  26. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  27. Carbon Fiber Filled — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  28. CARBONX PETG+CF — product page (print recommendations) 3DXTech · 2026-08 · doc
  29. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  30. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  31. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  32. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  33. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  34. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  35. PETG — material basics Polymaker Wiki · 2026-08 · doc
  36. 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
  37. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  38. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  39. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  40. HIPS — Knowledge Base Prusa Research · 2026-08 · doc