3D Printing Info

Filament comparison

ASA-CF vs rPETG

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

Carbon-fibre ASA (ASA-CF) guideRecycled PETG (rPETG) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-CF comparisonsMore rPETG comparisons
ASA-CF vs rPETG — documented properties and sources
PropertyCarbon-fibre ASA (ASA-CF)ASARecycled PETG (rPETG)PETG
Market snapshot
Listing priceUSD/kg; dated snapshots$36.99/kg median; $25.00–$90.00/kg across 5 dated product listings$28.99/kg median; $17.24–$39.98/kg across 4 dated product listings
Identity & Market
Base polymer / chemistryASA reinforced with chopped carbon fibre — Formfutura's ApolloX CF10 is 10 wt%[1][2][3]PETG regranulated from recycled polyester waste; Polymaker's Fiberon PETG-rCF08 adds 8 wt% recycled carbon fibre[4][5][6]
Densityg/cm³1.02 (Bambu Lab), 1.1 (Formfutura ApolloX CF10) and 1.11 (3DXTech), ISO 1183[1][2][3]1.27 (Prusament) and 1.30 (Fiberon PETG-rCF08), ISO 1183[4][6]
Typical priceUSD/kg1 kg spools cluster near 37[7][8]1 kg spools cluster near 29[9][10][8][11]
Price range across brandsUSD/kg25–90 across brands; IEMAI 25, Ambrosia 33, Bambu Lab 37, Polymaker Fiberon 40, 3DXTech 90[12][7][8][9][13]17–40 across brands; Filament PM RePETG 17, 3DXTech ECOMAX 26, GreenGate3D 32, Fiberon rCF08 40[9][10][8][11]
Market availability1–5Available from several mainstream brands[7][8][9][12]Available from several mainstream brands[9][10][8]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[8][9][7]1.75 and 2.85 mm; 0.5, 1 and 3 kg spools[8][10]
Typical applicationsOutdoor structural parts, drone and antenna mounts where stiffness and UV stability both matter[1][2]Not documented
Diameter tolerance± mmNot documented±0.05 (Prusament PETG Recycled), against ±0.02 for virgin Prusament PETG[4][14]
Printing Parameters
Nozzle temperature°C250–280 (Bambu Lab)[1]250 ± 10 (Prusament); 230–255 (Spectrum)[4][5]
Bed temperature°C80–100 (Bambu Lab)[1]80 ± 10 (Prusament); 60–80 (Spectrum)[4][5]
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][15]Open frame is fine — Spectrum states a closed chamber is not necessary[5]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]Not documented
Part cooling fanFan on (Bambu Lab)[1]50 % (Prusament); up to 100 % (Spectrum)[4][5]
Bed surface & adhesion aidPEI sheet, BuildTak or an adhesion aid such as Magigoo (Polymaker); Simplify3D also lists Kapton tape and ASA slurry[16][17]Textured PEI, satin or powder-coated sheets; on smooth PEI a glue stick acts as a release agent[14][18]
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][19]Not documented
Warping tendency1–5Moderate — needs adhesion aid or draught shield; the fibre reduces warping against unfilled ASA[15]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[16]Needs the right surface or a thin adhesive — the problem is releasing the part, not sticking it[14][18]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[16]Moderate — retraction tuning needed; Polymaker names stringing as PETG's common quirk[18]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[15]Easy — minor profile tuning; Spectrum describes printing as similar to standard PETG[5]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[15]Brass fine indefinitely[4]
Abrasiveness1–5Highly abrasive — standard CF composite[15]Not documented
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[20][21]Low — recycled PETG prints on the same hardware as virgin PETG: no special hot-end, no drybox and no hardened nozzle[22][23]
Heat-creep / jam sensitivity1–5Slightly sensitive[17]Slightly sensitive[22]
Hotend requirementNo special hotend required[17]No special hot-end required[22]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.33 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Moderate (0.3–0.8 %) — recycled PETG shares the virgin matrix, which reaches 0.40 % saturated at 25 °C / 55 % RH[14]
Equilibrium moisture content at ~50 % RH%0.33 saturated at 25 °C / 55 % RH (Bambu Lab)[1]0.07 after 24 h and 0.10 after 7 days at 24 °C / 22 % RH (Prusa Polymers)[4]
Drying temperature & time80 °C for 8 h (Bambu Lab)[1]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[24]Bubbling and popping at the nozzle, stringing and a rough surface[24]
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[24]Polymaker groups PETG with nylon, PVA and TPU as highly hygroscopic; no dry-versus-conditioned strength figures are published for this grade and the loss shows as bubbling and poor layer adhesion[24]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[24]Sealed with desiccant; Polymaker groups PETG with the highly hygroscopic materials[24][18]
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]43 ± 1.8 printed horizontal at yield, ISO 527-1 (Prusament), against 47 ± 2 for virgin Prusament PETG; Spectrum quotes 52 at yield on moulded specimens[4][14][5]
Young's modulusMPa4200 ± 270 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 5355 and Formfutura 7580[1][2][3]1500 printed horizontal, 1600 printed vertical (Prusament, ISO 527-1) — the same as virgin Prusament PETG[4][14]
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]4.5 at yield printed (Prusament); Spectrum quotes 400 at break on moulded specimens[4][5]
Flexural strengthMPa72 ± 5 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 78[1][2]63 ± 1 printed horizontal, ISO 178 (Prusament), against 66 ± 2 for virgin Prusament PETG[4][14]
Flexural modulusMPa3740 ± 130 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 5210[1][2]1800 printed horizontal, ISO 178 (Prusament)[4]
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][25]12 ± 1 printed horizontal and 15 ± 3 printed vertical, ISO 179-1 notched (Prusament)[4]
Other impact dataCharpy unnotched 14.0 ± 2.2 printed XY (Bambu Lab, ISO 179), against 41.0 for unfilled Bambu Lab ASA[1][25]Charpy unnotched 25 ± 3 printed horizontal and 38 ± 11 printed vertical (Prusament, ISO 179-1)[4]
Layer adhesion / Z tensileMPa30 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 33 against 72 in XY[1]15 ± 5 (Prusa Polymers interlayer adhesion test), against 18 ± 4 for virgin Prusament PETG[4][14]
Brittleness1–5Brittle — snaps with little warning[1][2]Moderate[4]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documented74 Shore D (Prusa Polymers method) — the same as virgin Prusament PETG[4][14]
Creep resistance / sustained load1–5Good — no creep test found; chopped carbon fibre lifts modulus to 4200 MPa against 2379–2450 for unfilled ASA[1][26]Below average — no recycled-grade creep test; virgin PETG sagged from 12 to 17.1–20.4 mm over 5 days at 1.25 kg[27][28][29][30]
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][25]Moderate — no recycled-grade S-N curve; virgin printed PETG ran 79 000–193 000 cycles at 30 % of tensile strength[31]
Elasticity / flexibility1–5Rigid[1]Slightly flexible in thin sections[4]
Z strength as % of XY%88 by tensile, 46 by flexural (printed, Bambu Lab)[1]Not documented
Thermal Properties
HDT at 0.45 MPa°C110 (ISO 75, 0.45 MPa, Bambu Lab) against 100 for unfilled Bambu Lab ASA[1][25]68 (ISO 75, 0.45 MPa) — the same as virgin Prusament PETG; Spectrum quotes 70[4][14][5]
HDT at 1.8 MPa°C102 (ISO 75, 1.8 MPa, Bambu Lab) against 92 for unfilled Bambu Lab ASA[1][25]68 (ISO 75, 1.8 MPa)[4]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[32]Not documented
Flammability / UL 94Flammable; no UL 94 rating published[25]Flammable; no UL 94 rating published for standard grades[33]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; the acrylate rubber phase is unchanged by the fibre[34][16]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[26]Withstands acids, alkalis, oils and UV exposure[18]
Food contactNot food safe[16]Not certified for food contact as filament[18]
Biodegradability / compostabilityNot biodegradable[16]Not biodegradable[18]
RecyclabilityNot accepted in household plastic collection[16]The feedstock itself — Spectrum describes collecting, shredding and re-homogenising PETG waste[5]
Electrical & ESD propertiesSurface resistance above 10⁹ ohm/sq — not static-dissipative (3DXTech, ASTM D257)[2]Not documented
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[35][15]Moderate — measurable VOCs and UFPs, ventilation advised[35]
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[15][35]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[35][15]Open a window / occasional ventilation[35]
Dust & fibre handling hazardCarbon fibre is bound in the matrix; sanding dust should not be inhaled[2]Not documented
Post-Processing
Sanding & machiningSands well and takes filler before painting[16]Sands poorly — the material is tough and gums rather than powders[22]
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[16]Not documented
Gluing & solvent weldingSolvent-welds with acetone[26]Cyanoacrylate; no common solvent welds PETG cleanly[22]
Vapour / chemical smoothingAcetone vapour smoothing works[26]No practical vapour smoothing[22]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[15]Prints its own supports; Polymaker rates PolyDissolve S1 for PETG[22]
Dimensional accuracy & detailMatte fibre-filled finish hides layer lines[1]Not documented
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone.[36][26]No common workshop solvent; 1,2-dichloroethane destroys it inside a week and dichloromethane — a carcinogen — dissolves the surface.[37][38]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[39]Acetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[37]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[38][26]Dichloromethane brushed on is the only agent that smooths PETG — a controlled carcinogen, not workshop stock.[38]

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. Prusament PETG Recycled Technical Datasheet Prusa Polymers · 2026-08 · tds
  5. Spectrum r-PETG Technical Data Sheet Spectrum Filaments · 2026-08 · tds
  6. Fiberon PETG-rCF08 Technical Data Sheet V1.0 Polymaker · 2026-08 · tds
  7. ASA-CF — product page Bambu Lab US Store · 2026-08 · vendor
  8. Polymaker product catalogue Polymaker · 2026-08 · vendor
  9. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  10. GreenGate3D Recycled PET-G — product data GreenGate3D · 2026-08 · vendor
  11. Filament PM RePETG technical data sheet Filament PM (Plasty Mladec) · 2026-08 · tds
  12. Filastruder product catalogue Filastruder · 2026-08 · vendor
  13. IEMAI CF-ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  14. Prusament PETG Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  15. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  16. ASA — material basics Polymaker Wiki · 2026-08 · doc
  17. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  18. PETG — material basics Polymaker Wiki · 2026-08 · doc
  19. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  20. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  21. Carbon Fiber Filled — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  22. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  23. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  24. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  25. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  26. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  27. PCTG vs PETG comparison — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  28. Extrudr PETG vs PCTG vs XPETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  29. Prusament PETG-CF vs PETG V0 vs PETG — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  30. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  31. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  32. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  33. Prusament PETG V0 Technical Datasheet Prusa Polymers · 2026-08 · tds
  34. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  35. 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
  36. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  37. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  38. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  39. HIPS — Knowledge Base Prusa Research · 2026-08 · doc