3D Printing Info

Filament comparison

ASA-CF vs PETG

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

Carbon-fibre ASA (ASA-CF) guidePETG guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-CF comparisonsMore PETG comparisons
ASA-CF vs PETG — documented properties and sources
PropertyCarbon-fibre ASA (ASA-CF)ASAPETGPETG
Market snapshot
Listing priceUSD/kg; dated snapshots$36.99/kg median; $25.00–$90.00/kg across 5 dated product listings$19.99/kg median; $8.99–$69.99/kg across 21 dated product listings
Identity & Market
Base polymer / chemistryASA reinforced with chopped carbon fibre — Formfutura's ApolloX CF10 is 10 wt%[1][2][3]Polyethylene terephthalate glycol copolymer — PET with a glycol comonomer that suppresses crystallisation[4][5]
Densityg/cm³1.02 (Bambu Lab), 1.1 (Formfutura ApolloX CF10) and 1.11 (3DXTech), ISO 1183[1][2][3]1.24–1.30 (ISO 1183)[4][5][6][7]
Typical priceUSD/kg1 kg spools cluster near 37[8][9]1 kg spools cluster near 20[10][9][11]
Price range across brandsUSD/kg25–90 across brands; IEMAI 25, Ambrosia 33, Bambu Lab 37, Polymaker Fiberon 40, 3DXTech 90[12][8][9][13][14]12–70 across brands; IEMAI 12, ELEGOO 14, CHCKX 14, Bambu Lab 18–20, Hatchbox 26, Prusament 38, Prusament PETG V0 70[10][9][15][11][16][17]
Market availability1–5Available from several mainstream brands[8][9][13][12]Ubiquitous, every brand and retailer[10][9][18][11]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[9][13][8]1.75 and 2.85 mm; 0.75, 0.8 and 1 kg spools plus spool-less refills[9][11]
Typical applicationsOutdoor structural parts, drone and antenna mounts where stiffness and UV stability both matter[1][2]Functional parts, enclosures and outdoor fittings that need more toughness and heat tolerance than PLA[4][5]
Diameter tolerance± mmNot documented±0.02 (Prusament)[4]
Printing Parameters
Nozzle temperature°C250–280 (Bambu Lab)[1]230–260 across brands; Prusament 250 ± 10, Polymaker 240–260[4][5][7]
Bed temperature°C80–100 (Bambu Lab)[1]60–90; Prusament 80 ± 10, Polymaker 60–70[4][7]
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][19]Open frame is fine[7]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]Not documented
Part cooling fanFan on (Bambu Lab)[1]Around 50 %; Polymaker specifies 20–60 %, less than PLA to protect layer bonding[4][7]
Bed surface & adhesion aidPEI sheet, BuildTak or an adhesion aid such as Magigoo (Polymaker); Simplify3D also lists Kapton tape and ASA slurry[20][21]Textured PEI, satin or powder-coated sheets. On smooth PEI a glue stick is used as a release agent, not an adhesive — PETG bonds to bare PEI hard enough to tear the sheet[4][7]
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][22]8–15 (PrusaSlicer guidance); My Tech Fun ran Bambu Lab PETG Basic at 13 mm³/s[22][23]
Warping tendency1–5Moderate — needs adhesion aid or draught shield; the fibre reduces warping against unfilled ASA[19]Slight — corner lift on large flat parts[4][7]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[20]Needs the right surface or a thin adhesive — the problem is releasing the part, not sticking it[4]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[20]Moderate — retraction tuning needed[4][7]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[19]Easy — minor profile tuning[7]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[19]Brass fine indefinitely[22]
Abrasiveness1–5Highly abrasive — standard CF composite[19]Non-abrasive[7]
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[24][25]Low — no special hot-end required and clogging is not among the listed drawbacks; Prusa lists no drybox and no hardened nozzle[26][27]
Heat-creep / jam sensitivity1–5Slightly sensitive[21]Slightly sensitive[26]
Hotend requirementNo special hotend required[21]No special hot-end required[26]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.33 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Moderate (0.3–0.8 %) — Bambu Lab reports 0.40 % saturated at 25 °C / 55 % RH; Prusa measures only 0.07 % in 24 h and 0.10 % in 7 days at the drier 22 % RH[4][28]
Equilibrium moisture content at ~50 % RH%0.33 saturated at 25 °C / 55 % RH (Bambu Lab)[1]0.10 after 7 days at 24 °C / 22 % RH (Prusa Polymers); 0.40 saturated at 25 °C / 55 % RH (Bambu Lab)[4][28]
Drying temperature & time80 °C for 8 h (Bambu Lab)[1]60–65 °C for 6–8 h[7][28]
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[4]
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]Polymaker groups PETG with nylon, PVA and TPU as highly hygroscopic and shows a before-and-after-drying comparison; the loss appears as poor layer adhesion and weak, brittle layers rather than a published dry-versus-conditioned figure[29]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[29]Sealed with desiccant; Polymaker groups PETG with the highly hygroscopic materials[29][30]
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]38–51 (printed XY, ISO 527); Prusament 47 ± 2 at yield; 62 on My Tech Fun 4×4 mm bars[4][5][6][31]
Young's modulusMPa4200 ± 270 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 5355 and Formfutura 7580[1][2][3]1500–2311 (printed XY, ISO 527)[4][5][6][7]
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]5.2–9.3 at break (printed XY, ISO 527); Prusament 5.1 at yield[5][6][7][4]
Flexural strengthMPa72 ± 5 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 78[1][2]58–80 (printed XY, ISO 178); Prusament 66 ± 2[4][5][6][7]
Flexural modulusMPa3740 ± 130 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 5210[1][2]1068–2277 (printed XY, ISO 178)[4][5][6][7]
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][32]2.6 (PolyLite) to 11.6 (PolyMax) printed XY, ISO 179, notched; Prusament 6 ± 1[5][6][4]
Other impact dataCharpy unnotched 14.0 ± 2.2 printed XY (Bambu Lab, ISO 179), against 41.0 for unfilled Bambu Lab ASA[1][32]Charpy unnotched does not break on Prusa's 4 J pendulum (ISO 179-1); Izod 3.37 kJ/m² on My Tech Fun printed bars[4][31]
Layer adhesion / Z tensileMPa30 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 33 against 72 in XY[1]18 ± 4 (Prusa interlayer adhesion test); 42.8 printed Z for PolyLite PETG; 33 on My Tech Fun bars[4][5][31]
Brittleness1–5Brittle — snaps with little warning[1][2]Moderate[4][5]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documented74 Shore D (Prusa Polymers method); measured on printed bars at 68.2 for Extrudr PETG, 72 for Fiberlogy PETG and 72.8 for Prusament PETG[4][31][33][34]
Creep resistance / sustained load1–5Good — no creep test found; chopped carbon fibre lifts modulus to 4200 MPa against 2379–2450 for unfilled ASA[1][35]Below average — a 12 mm bar sagged to 18.2 mm (Fiberlogy) and 19.4 mm (Bambu Lab Basic) over 5 days at 1.25 kg[31][23]
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][32]Moderate — 79 000–193 000 cycles at 30 % of tensile strength, about three times printed PLA (R = 0.2, 7 Hz)[36]
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]84 (PolyLite, printed Z against XY tensile)[5]
Thermal Properties
HDT at 0.45 MPa°C110 (ISO 75, 0.45 MPa, Bambu Lab) against 100 for unfilled Bambu Lab ASA[1][32]68 (Prusament) to 78 (PolyLite), ISO 75 at 0.45 MPa[4][5][7]
HDT at 1.8 MPa°C102 (ISO 75, 1.8 MPa, Bambu Lab) against 92 for unfilled Bambu Lab ASA[1][32]65 (Polymaker) to 75 (PolyLite), ISO 75 at 1.8 MPa; Prusament 68[4][5][7]
Glass transition (Tg)°CNot documented71–81 (DSC)[5][6][7]
Melting point / Vicat°CNot documentedAmorphous — no melting point; Vicat 75–84 (ISO 306)[5][6][7]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[37]61–66 — loaded bars begin to move at this temperature across six grades from four brands; Prusa publishes 68 for Prusament PETG[31][33][34][23][38]
Thermal expansion (CTE)µm/m·KNot documented65 at 30 °C (neat PETG, large-format printed bead, TMA)[39]
Flammability / UL 94Flammable; no UL 94 rating published[32]Flammable; no UL 94 rating published for standard PETG, though flame-retardant V0 grades exist[40][30]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; the acrylate rubber phase is unchanged by the fibre[41][20]Moderate — a season or two[4]
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[35]Withstands acids, alkalis, oils and UV exposure — Polymaker names outdoor use as a result[30]
Water / humidity resistance in service1–5Not documentedGood — minor absorption[4]
Food contactNot food safe[20]PET is the polymer of drinks bottles, but printed layer grooves harbour bacteria and no filament here carries a food-contact certification[30]
Biodegradability / compostabilityNot biodegradable[20]Not biodegradable[30]
RecyclabilityNot accepted in household plastic collection[20]PET is widely recycled as bottle stock, but printed PETG waste is not accepted in household collection[30]
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[42][19]Moderate — measurable VOCs and UFPs, ventilation advised[42]
Ultrafine-particle emission rateparticles/minNot documented≈5 × 10⁹ median for the PET-based T-Glase filament in the same chamber study, against ≈1 × 10⁸ for PLA[42]
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[19][42]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[42][19]Open a window / occasional ventilation[42]
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[20]Sands poorly — the material is tough and gums rather than powders[26]
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[20]Paint adheres poorly without abrasion and a primer[4]
Gluing & solvent weldingSolvent-welds with acetone[35]Cyanoacrylate; no common solvent welds PETG cleanly[26]
Vapour / chemical smoothingAcetone vapour smoothing works[35]No practical vapour smoothing[4]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[19]Prints its own supports; Polymaker rates PolyDissolve S1 for PETG[26]
Dimensional accuracy & detailMatte fibre-filled finish hides layer lines[1]Stringing and blobbing are the usual accuracy limits, not shrinkage[4][7]
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone.[43][35]No common workshop solvent; 1,2-dichloroethane destroys it inside a week and dichloromethane — a carcinogen — dissolves the surface.[44][45]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[46]Acetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[44]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[45][35]Dichloromethane brushed on is the only agent that smooths PETG — a controlled carcinogen, not workshop stock.[45]

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 Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  5. PolyLite PETG Technical Data Sheet Polymaker Wiki · 2026-08 · tds
  6. PolyMax PETG Technical Data Sheet Polymaker Wiki · 2026-08 · tds
  7. Polymaker PETG Technical Data Sheet Polymaker Wiki · 2026-08 · tds
  8. ASA-CF — product page Bambu Lab US Store · 2026-08 · vendor
  9. Polymaker product catalogue Polymaker · 2026-08 · vendor
  10. PETG Basic — product page Bambu Lab US Store · 2026-08 · vendor
  11. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  12. Filastruder product catalogue Filastruder · 2026-08 · vendor
  13. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  14. IEMAI CF-ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  15. Black PETG Filament 1.75 mm 1 kg — product data Hatchbox · 2026-08 · vendor
  16. IEMAI PETG 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  17. CHCKX PETG 3D Printer Filament 1.75 mm 1 kg, Black CHCKX (Amazon US) · 2026-08 · vendor
  18. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  19. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  20. ASA — material basics Polymaker Wiki · 2026-08 · doc
  21. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  22. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  23. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  24. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  25. Carbon Fiber Filled — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  26. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  27. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  28. Bambu Filament Technical Data Sheet — PETG HF Bambu Lab · 2026-08 · tds
  29. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  30. PETG — material basics Polymaker Wiki · 2026-08 · doc
  31. PCTG vs PETG comparison — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  32. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  33. Extrudr PETG vs PCTG vs XPETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  34. Prusament PETG-CF vs PETG V0 vs PETG — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  35. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  36. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  37. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  38. Prusament PETG — material page Prusa Polymers · 2026-08 · doc
  39. Effects of Fiber Orientation on the Coefficient of Thermal Expansion of Fiber-Filled Polymer Systems in Large Format Polymer Extrusion-Based Additive Manufacturing Materials 15(8):2764 · 2022-04 · paper
  40. Prusament PETG V0 Technical Datasheet Prusa Polymers · 2026-08 · tds
  41. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  42. 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
  43. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  44. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  45. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  46. HIPS — Knowledge Base Prusa Research · 2026-08 · doc