3D Printing Info

Filament comparison

ASA-CF vs PETG-GF

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

Carbon-fibre ASA (ASA-CF) guideGlass-fibre polyester (PETG-GF / PET-GF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-CF comparisonsMore PETG-GF comparisons
ASA-CF vs PETG-GF — documented properties and sources
PropertyCarbon-fibre ASA (ASA-CF)ASAGlass-fibre polyester (PETG-GF / PET-GF)PETG
Market snapshot
Listing priceUSD/kg; dated snapshots$36.99/kg median; $25.00–$90.00/kg across 5 dated product listings$27.38/kg median; $18.99–$29.99/kg across 3 dated product listings
Identity & Market
Base polymer / chemistryASA reinforced with chopped carbon fibre — Formfutura's ApolloX CF10 is 10 wt%[1][2][3]Glass-fibre reinforced polyester. Polymaker's Fiberon PET-GF15 uses a PET rather than a PETG matrix and carries 15 wt% glass fibre[4]
Densityg/cm³1.02 (Bambu Lab), 1.1 (Formfutura ApolloX CF10) and 1.11 (3DXTech), ISO 1183[1][2][3]1.43 (Fiberon PET-GF15, ISO 1183)[4]
Typical priceUSD/kg1 kg spools cluster near 37[5][6]1 kg spools cluster near 25[7][6]
Price range across brandsUSD/kg25–90 across brands; IEMAI 25, Ambrosia 33, Bambu Lab 37, Polymaker Fiberon 40, 3DXTech 90[8][5][6][9][10]19–30 across brands; ELEGOO 19, Polymaker Fiberon 30[7][6]
Market availability1–5Available from several mainstream brands[5][6][9][8]Niche, a handful of specialist brands[7][6]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[6][9][5]1.75 mm; 0.5 and 1 kg spools[6]
Typical applicationsOutdoor structural parts, drone and antenna mounts where stiffness and UV stability both matter[1][2]Stiff, dimensionally stable fixtures; the Fiberon grade is designed to be annealed for heat resistance[4]
Printing Parameters
Nozzle temperature°C250–280 (Bambu Lab)[1]Not documented
Bed temperature°C80–100 (Bambu Lab)[1]Not documented
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][11]Not documented
Recommended chamber temperature°C45–60 (Bambu Lab)[1]Not documented
Part cooling fanFan on (Bambu Lab)[1]Not documented
Bed surface & adhesion aidPEI sheet, BuildTak or an adhesion aid such as Magigoo (Polymaker); Simplify3D also lists Kapton tape and ASA slurry[12][13]Textured PEI, satin or powder-coated sheets; on smooth PEI a glue stick acts as a release agent[14][15]
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][16]Not documented
Warping tendency1–5Moderate — needs adhesion aid or draught shield; the fibre reduces warping against unfilled ASA[11]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[12]Needs the right surface or a thin adhesive — the problem is releasing the part, not sticking it[14][15]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[12]Moderate — retraction tuning needed; Polymaker names stringing as PETG's common quirk[15]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[11]Not documented
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[11]Hardened steel required[4]
Abrasiveness1–5Highly abrasive — standard CF composite[11]Highly abrasive — standard GF 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[17][18]Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[17]
Heat-creep / jam sensitivity1–5Slightly sensitive[13]Slightly sensitive[19]
Hotend requirementNo special hotend required[13]No special hot-end required[19]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.33 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Moderate (0.3–0.8 %) — the PETG matrix reaches 0.40 % saturated at 25 °C / 55 % RH; no glass-filled grade publishes its own figure[14]
Equilibrium moisture content at ~50 % RH%0.33 saturated at 25 °C / 55 % RH (Bambu Lab)[1]Not documented
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[20]Bubbling and popping at the nozzle, stringing and a rough surface[20]
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[20]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[20]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[20]Sealed with desiccant; Polymaker groups PETG with the highly hygroscopic materials[20][15]
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]59.9 ± 0.8 printed XY, ISO 527 (Fiberon PET-GF15)[4]
Young's modulusMPa4200 ± 270 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 5355 and Formfutura 7580[1][2][3]4144 ± 133 printed XY, ISO 527 (Fiberon PET-GF15)[4]
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]4.0 ± 0.5 printed XY, ISO 527 (Fiberon PET-GF15)[4]
Flexural strengthMPa72 ± 5 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 78[1][2]104.2 ± 2.4 printed XY, ISO 178 (Fiberon PET-GF15)[4]
Flexural modulusMPa3740 ± 130 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 5210[1][2]3705 ± 85 printed XY, ISO 178 (Fiberon PET-GF15)[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][21]8.7 ± 0.6 printed XY, ISO 179, notched (Fiberon PET-GF15)[4]
Other impact dataCharpy unnotched 14.0 ± 2.2 printed XY (Bambu Lab, ISO 179), against 41.0 for unfilled Bambu Lab ASA[1][21]Charpy unnotched 27.2 ± 2.0 printed XY (Fiberon PET-GF15, ISO 179)[4]
Layer adhesion / Z tensileMPa30 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 33 against 72 in XY[1]48.2 ± 0.3 printed Z, ISO 527 (Fiberon PET-GF15)[4]
Brittleness1–5Brittle — snaps with little warning[1][2]Brittle — snaps with little warning; elongation 4.0 % in XY and 2.6 % in Z[4]
Creep resistance / sustained load1–5Good — no creep test found; chopped carbon fibre lifts modulus to 4200 MPa against 2379–2450 for unfilled ASA[1][22]Below average — no GF-grade creep test; the CF grades sagged to 14.8–16.7 mm over 5 days at 1.25 kg against 17.1–20.4 mm unfilled[23][24][25]
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][21]Below average — no GF-grade S-N curve; elongation at break falls to 4.0 % in XY against 5.2–9.3 % unfilled[4][26]
Elasticity / flexibility1–5Rigid[1]Rigid[4]
Z strength as % of XY%88 by tensile, 46 by flexural (printed, Bambu Lab)[1]80 (Fiberon PET-GF15, 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][21]81.6 as printed, 133.7 after annealing (ISO 75, 0.45 MPa)[4]
HDT at 1.8 MPa°C102 (ISO 75, 1.8 MPa, Bambu Lab) against 92 for unfilled Bambu Lab ASA[1][21]71.8 as printed, 87.3 after annealing (ISO 75, 1.8 MPa)[4]
Glass transition (Tg)°CNot documented59.5 (DSC)[4]
Melting point / Vicat°CNot documented231.6 melting (DSC); Vicat 232.6 (ISO 306)[4]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[27]Not documented
Annealing responseNot documentedAnnealing lifts HDT at 0.45 MPa from 81.6 to 133.7 °C[4]
Thermal expansion (CTE)µm/m·KNot documented20 along the print bead and 63–74 in the build direction at 30 °C (30 wt% GF, large-format printed, TMA)[28]
Flammability / UL 94Flammable; no UL 94 rating published[21]UL 94 HB at 1.5 mm (Fiberon PET-GF15)[4]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; the acrylate rubber phase is unchanged by the fibre[29][12]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[22]Withstands acids, alkalis, oils and UV exposure[15]
Food contactNot food safe[12]Not certified for food contact as filament[15]
Biodegradability / compostabilityNot biodegradable[12]Not biodegradable[15]
RecyclabilityNot accepted in household plastic collection[12]Not accepted in household plastic collection[15]
Electrical & ESD propertiesSurface resistance above 10⁹ ohm/sq — not static-dissipative (3DXTech, ASTM D257)[2]Surface resistivity above 10¹² ohm — insulating (Fiberon PET-GF15, ANSI/ESD S11.11)[4]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[30][11]Moderate — measurable VOCs and UFPs, ventilation advised[30]
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[11][30]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[30][11]Open a window / occasional ventilation[30]
Dust & fibre handling hazardCarbon fibre is bound in the matrix; sanding dust should not be inhaled[2]Glass fibre is bound in the matrix; avoid inhaling sanding dust[4]
Post-Processing
Sanding & machiningSands well and takes filler before painting[12]Sands poorly — the material is tough and gums rather than powders[19]
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[12]Not documented
Gluing & solvent weldingSolvent-welds with acetone[22]Cyanoacrylate; no common solvent welds PETG cleanly[19]
Vapour / chemical smoothingAcetone vapour smoothing works[22]No practical vapour smoothing[19]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[11]Prints its own supports; Polymaker rates PolyDissolve S1 for PETG[19]
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.[31][22]No common workshop solvent; dichloromethane — a carcinogen — dissolves the matrix surface, 1,2-dichloroethane destroys it in a week.[32][33]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[34]Acetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[32]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[33][22]Dichloromethane reaches only the resin, so the fibre is left standing proud of the surface. Controlled carcinogen.[33]

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. Fiberon PET-GF15 Technical Data Sheet V1.0 Polymaker · 2026-08 · tds
  5. ASA-CF — product page Bambu Lab US Store · 2026-08 · vendor
  6. Polymaker product catalogue Polymaker · 2026-08 · vendor
  7. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  8. Filastruder product catalogue Filastruder · 2026-08 · vendor
  9. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  10. IEMAI CF-ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  11. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  12. ASA — material basics Polymaker Wiki · 2026-08 · doc
  13. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  14. Prusament PETG Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  15. PETG — material basics Polymaker Wiki · 2026-08 · doc
  16. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  17. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  18. Carbon Fiber Filled — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  19. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  20. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  21. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  22. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  23. Extrudr PETG vs PCTG vs XPETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  24. Prusament PETG-CF vs PETG V0 vs PETG — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  25. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  26. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  27. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  28. 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
  29. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  30. 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
  31. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  32. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  33. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  34. HIPS — Knowledge Base Prusa Research · 2026-08 · doc