3D Printing Info

Filament comparison

ASA-CF vs ASA-GF

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

Carbon-fibre ASA (ASA-CF) guideGlass-fibre ASA (ASA-GF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-CF comparisonsMore ASA-GF comparisons
ASA-CF vs ASA-GF — documented properties and sources
PropertyCarbon-fibre ASA (ASA-CF)ASAGlass-fibre ASA (ASA-GF)ASA
Market snapshot
Listing priceUSD/kg; dated snapshots$36.99/kg median; $25.00–$90.00/kg across 5 dated product listings$29.95/kg median; $26.99–$33.99/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]ASA reinforced with chopped glass fibre — 10 wt% (Spectrum ASA-X GF10), 15 wt% (ZYLtech ASA-GF)[4][5]
Densityg/cm³1.02 (Bambu Lab), 1.1 (Formfutura ApolloX CF10) and 1.11 (3DXTech), ISO 1183[1][2][3]1.07 (ZYLtech) and 1.11 (Spectrum), ISO 1183[4][5]
Typical priceUSD/kg1 kg spools cluster near 37[6][7]1 kg spools cluster near 28[8][9]
Price range across brandsUSD/kg25–90 across brands; IEMAI 25, Ambrosia 33, Bambu Lab 37, Polymaker Fiberon 40, 3DXTech 90[8][6][7][10][11]27–34 across brands; Ambrosia 27, ZYLtech 30, Siraya Tech 34[8][9][12]
Market availability1–5Available from several mainstream brands[6][7][10][8]Niche, a handful of specialist brands[8][4][5]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[7][10][6]1.75 and 2.85 mm; 1 kg spools[5][8]
Typical applicationsOutdoor structural parts, drone and antenna mounts where stiffness and UV stability both matter[1][2]Outdoor brackets and mounts that need stiffness and dimensional stability under sun and moisture[4][5]
Diameter tolerance± mmNot documented±0.01 at 95 % probability and ±0.02 at 100 % (ZYLtech)[5]
Printing Parameters
Nozzle temperature°C250–280 (Bambu Lab)[1]240–270 (Spectrum); 240–280 (ZYLtech)[4][5]
Bed temperature°C80–100 (Bambu Lab)[1]80–100 (Spectrum); 90–110 on PEI (ZYLtech)[4][5]
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][13]Enclosure recommended[13]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]Not documented
Part cooling fanFan on (Bambu Lab)[1]0–20 % (Spectrum)[4]
Bed surface & adhesion aidPEI sheet, BuildTak or an adhesion aid such as Magigoo (Polymaker); Simplify3D also lists Kapton tape and ASA slurry[14][15]PEI sheet, BuildTak or an adhesion aid such as Magigoo (Polymaker); Simplify3D also lists Kapton tape and ASA slurry[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]2.4–5.6 at Spectrum's 30–70 mm/s on a 0.4 mm nozzle at 0.2 mm layer; ZYLtech allows up to 200 mm/s[4][5][16]
Warping tendency1–5Moderate — needs adhesion aid or draught shield; the fibre reduces warping against unfilled ASA[13]Moderate — needs adhesion aid or draught shield[13]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[14]Needs a specific surface plus adhesive[14]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[14]Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[14]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[13]Intermediate — dry filament and a tuned profile; ZYLtech requires a hardened nozzle of 0.6 mm or larger[5][4]
Extruder requirementNot documentedZYLtech specifies a hardened nozzle 0.6 mm or larger; Spectrum bases its settings on a 0.5 mm nozzle[5][4]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[13]Hardened steel required — Spectrum recommends ruby or hardened, ZYLtech requires hardened[4][5]
Abrasiveness1–5Highly abrasive — standard CF composite[13]Highly abrasive — standard GF composite[4][5]
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[15]Slightly sensitive[15]
Hotend requirementNo special hotend required[15]No special hotend required[15]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.33 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Moderate — the ASA matrix takes up 0.40–0.45 % saturated at 25 °C / 55 % RH; no glass-filled grade publishes its own figure[19][20][21]
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[22]Bubbling and popping at the nozzle, stringing and a rough surface[22]
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[22]No dry-versus-conditioned figures are published; Polymaker groups the styrenics as moderate-sensitivity and absorbed water shows as bubbling and poor layer adhesion[22]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[22]Sealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[22]
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]33–36 at break, ISO 527 (ZYLtech; specimen type not stated); Spectrum quotes 55 at break on injection-moulded specimens[5][4]
Young's modulusMPa4200 ± 270 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 5355 and Formfutura 7580[1][2][3]2540–2890 (ZYLtech; specimen type not stated) and 2550 (Spectrum, injection-moulded), ISO 527[5][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]3.4 at break (ZYLtech; specimen type not stated); Spectrum quotes 2.80 at yield on injection-moulded specimens[5][4]
Flexural strengthMPa72 ± 5 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 78[1][2]Not documented
Flexural modulusMPa3740 ± 130 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 5210[1][2]2130–2480 flexural modulus, ISO 178 (ZYLtech; specimen type not stated)[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][19]8.3 notched Charpy at 23 °C on injection-moulded specimens (Spectrum, ISO 179-1eA); ZYLtech publishes notched Izod 6.9 by ISO 180 instead[4][5]
Other impact dataCharpy unnotched 14.0 ± 2.2 printed XY (Bambu Lab, ISO 179), against 41.0 for unfilled Bambu Lab ASA[1][19]Charpy unnotched 25 kJ/m² at 23 °C on injection-moulded specimens (Spectrum, ISO 179-1eU); ZYLtech notched Izod 6.9 kJ/m² (ISO 180)[4][5]
Layer adhesion / Z tensileMPa30 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 33 against 72 in XY[1]Not documented
Brittleness1–5Brittle — snaps with little warning[1][2]Brittle — snaps with little warning; elongation at break 3.4 %[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][20]Good — no creep test found; chopped glass fibre lifts modulus to 2540–2890 against 2379–2450 for unfilled ASA[5][20][19]
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][19]Below average — no GF-grade S-N curve; elongation at break falls to 3.4 % against 6.7–9.2 % for unfilled ASA[5][20][19]
Elasticity / flexibility1–5Rigid[1]Rigid[5]
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][19]100 (Spectrum, injection-moulded, ISO 75 at 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][19]97–99 unannealed (ZYLtech, ISO 75 at 1.8 MPa; specimen type not stated); Spectrum 90 on injection-moulded specimens[5][4]
Melting point / Vicat°CNot documentedAmorphous ASA matrix; Vicat 98 (Spectrum, ISO 306). ZYLtech quotes a 210–220 °C melting range by ISO 11357 for its grade[4][5]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[23]93 — Prusa publishes this as the temperature resistance of Prusament ASA[23]
Flammability / UL 94Flammable; no UL 94 rating published[19]Flammable; no UL 94 rating published[19]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; the acrylate rubber phase is unchanged by the fibre[24][14]Excellent — designed for permanent outdoor use; Spectrum states the parts resist prolonged UV and moisture exposure[4][24]
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[20]Good against weak acids, weak alkalis, oils and grease; dissolved by acetone[20]
Food contactNot food safe[14]Not food safe[14]
Biodegradability / compostabilityNot biodegradable[14]Not biodegradable[14]
RecyclabilityNot accepted in household plastic collection[14]Not accepted in household plastic collection[14]
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[25][13]High — hazardous VOC such as styrene; enclosure and filtration needed[25][13]
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[13][25]Styrene. 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[13][25]
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[25][13]Enclosure with carbon and HEPA filtration[25][13]
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[14]Sands well and takes filler before painting[14]
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[14]Paints readily; ASA holds colour outdoors so many parts are left unpainted[14]
Gluing & solvent weldingSolvent-welds with acetone[20]Solvent-welds with acetone[20]
Vapour / chemical smoothingAcetone vapour smoothing works[20]Acetone vapour smoothing works[20]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[13]HIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[13]
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.[26][20]Acetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone.[26][20]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[27]Limonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[27]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[28][20]Acetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[28][20]

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. Spectrum ASA-X GF10 Technical Data Sheet (mechanical and thermal data marked injection-moulded) Spectrum Filaments · 2026-08 · tds
  5. ZYLtech ASA-GF Filament Technical Data Sheet v1 ZYLtech · 2026-08 · tds
  6. ASA-CF — product page Bambu Lab US Store · 2026-08 · vendor
  7. Polymaker product catalogue Polymaker · 2026-08 · vendor
  8. Filastruder product catalogue Filastruder · 2026-08 · vendor
  9. ZYLtech ASA-GF Glass Fiber filament — product page ZYLtech · 2026-08 · vendor
  10. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  11. IEMAI CF-ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  12. Siraya Tech Fibreheart ASA-GF Filament product page Siraya Tech · 2026-08 · vendor
  13. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  14. ASA — material basics Polymaker Wiki · 2026-08 · doc
  15. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 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. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  20. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  21. Prusament ASA Technical Datasheet v1.1 Prusa Polymers · 2024-05 · tds
  22. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  23. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  24. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  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. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  27. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  28. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc