3D Printing Info

Filament comparison

ASA Aero vs PA6-GF

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

Foaming ASA (ASA Aero) guideGlass-fibre PA6 (PA6-GF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA Aero comparisonsMore PA6-GF comparisons
ASA Aero vs PA6-GF — documented properties and sources
PropertyFoaming ASA (ASA Aero)ASAGlass-fibre PA6 (PA6-GF)PA
Market snapshot
Listing priceUSD/kg; dated snapshots$49.99/kg median; $49.99–$49.99/kg across 1 dated product listings$59.98/kg median; $39.99–$130.00/kg across 6 dated product listings
Identity & Market
Base polymer / chemistryASA with a heat-activated blowing agent that expands at the nozzle[1][2]PA6 reinforced with chopped glass fibre — Polymaker's grade is 25 wt%[3][4]
Densityg/cm³0.99 filament (Bambu Lab, ISO 1183); Formfutura's grade reaches 0.33 g/cm³ fully expanded[1][2]1.14 (Bambu Lab) and 1.20 (Polymaker Fiberon), ISO 1183[4][3]
Typical priceUSD/kg1 kg spools cluster near 50[5]1 kg-equivalent spools span 40–130; the middle of the market is about 60[4][6][7]
Price range across brandsUSD/kg50 at Bambu Lab's 1 kg listing[5]40–130 across brands; SUNLU 40, YXPOLYER 45, Polymaker Fiberon and Bambu Lab 60, 3DXTech FibreX 87, Obsidian Nylon 6+GF 130[6][4][8][7][9]
Market availability1–5Niche, a handful of specialist brands[5][2]Stocked by most mainstream brands[4][6][8][7][9]
Spool sizes & diameters1.75 mm; 1 kg spools[5]1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[6][8][4]
Typical applicationsDrone airframes, RC parts and floating or outdoor applications where mass matters and UV exposure rules out LW-PLA[2]Stiff, heat-resistant structural parts where a matte finish and lower cost beat carbon fibre[4][3]
Printing Parameters
Nozzle temperature°C240–280 (Bambu Lab); 220–285 (Formfutura), with foaming activating near 230 °C and peaking between 270 and 285 °C[1][2]260–290 (Bambu Lab)[4]
Bed temperature°C80–90 (Bambu Lab); 50–90 (Formfutura)[1][2]Not documented
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][10]Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber[4]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]45–60 (Bambu Lab)[4]
Part cooling fan0–80 % (Bambu Lab); 0–50 % (Formfutura)[1][2]Not documented
Bed surface & adhesion aidPEI sheet, BuildTak or an adhesion aid such as Magigoo (Polymaker); Simplify3D also lists Kapton tape and ASA slurry[11][12]PEI sheet with a glue stick, or a dedicated adhesive such as Magigoo[13][14]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s12 at Bambu Lab's 150 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[1][15]10 at Bambu Lab's 130 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[4][15]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[11]Needs a specific surface plus adhesive[13]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[11]Moderate — retraction tuning needed[14]
Overall printing difficulty1–5Advanced — enclosure, hardware upgrades, tuning; flow has to be cut to match the expansion and the density follows nozzle temperature[2][1]Expert / industrial hardware only[4][16]
Extruder requirementNot documented0.6 mm nozzle recommended by Bambu Lab; 0.4 and 0.8 also supported[4]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[10]Hardened steel required — Polymaker measures brass nozzle life at about 9 h on PA6-GF25 and recommends hardened steel or ruby[3]
Abrasiveness1–5Non-abrasive[10]Highly abrasive — standard GF composite; Polymaker puts brass nozzle life at roughly 9 h on PA6-GF25[3]
Nozzle clog risk1–5Not documentedVery high — frequent jams without careful setup[16]
Heat-creep / jam sensitivity1–5Slightly sensitive[12]Moderate — good heatbreak cooling needed[13]
Hotend requirementNo special hotend required[12]May require an all-metal hot end (Simplify3D)[13]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5High — 0.80 % saturated at 25 °C / 55 % RH, nearly double unfilled Bambu Lab ASA[1][17]Very high (>2 %) — 2.56 % saturated at 25 °C / 55 % RH (Bambu Lab) and 3.33 % equilibrium (Polymaker Fiberon), the highest in the dataset[4][3]
Equilibrium moisture content at ~50 % RH%0.80 saturated at 25 °C / 55 % RH (Bambu Lab)[1]2.56 saturated at 25 °C / 55 % RH (Bambu Lab); 3.33 equilibrium (Polymaker Fiberon PA6-GF25)[4][3]
Drying temperature & time80 °C for 8 h (Bambu Lab)[1]80 °C for 8–12 h (Bambu Lab)[4]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[16]Popping and cracking during extrusion, then hard-to-diagnose defects[18]
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[16]Polymaker publishes dry and wet printed blocks for PA6-GF25 itself: at 4.57 % moisture tensile falls 80.1 → 40.2 MPa and modulus 5357 → 1794 MPa, while notched Charpy rises 10.0 → 28.0 kJ/m²[3][18]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[16]Sealed below 20 % RH with desiccant[16]
Hydrolysis at melt temperatureNot documentedPolymaker specifies an 80–100 °C dry and storage below 20 % RH; no molecular-weight loss figure is published, and the wet data it does publish is conditioning rather than melt hydrolysis[19][20]
Mechanical Properties
Tensile strength (XY)MPa32 ± 4 printed XY, ISO 527 (Bambu Lab)[1]75 ± 6 (Bambu Lab) and 80.1 ± 1.8 (Polymaker Fiberon, dry/annealed) printed XY, ISO 527; Fiberon falls to 40.2 ± 2.1 conditioned to 4.57 % moisture. Stratasys FDM PA6/66-GF30-FR gives 60.2-61.1 at break and 61.7-62.3 at yield printed XZ (ASTM D638)[4][3][21]
Young's modulusMPa2010 ± 260 printed XY, ISO 527 (Bambu Lab)[1]2850 ± 260 (Bambu Lab) and 5357 ± 211 (Polymaker Fiberon, dry) printed XY, ISO 527; Fiberon falls to 1794 ± 84 conditioned. Stratasys FDM PA6/66-GF30-FR gives 5600-5830 printed XZ against 3050-3140 in ZX (ASTM D638)[4][3][21]
Elongation at break%5.1 ± 1.6 printed XY, ISO 527 (Bambu Lab)[1]2.4 ± 0.2 dry (Polymaker Fiberon) to 3.9 ± 0.8 (Bambu Lab) printed XY, ISO 527; the Fiberon grade rises to 4.2 ± 0.7 conditioned[4][3]
Flexural strengthMPa58 ± 6 printed XY, ISO 178 (Bambu Lab)[1]Not documented
Flexural modulusMPa1510 ± 120 printed XY, ISO 178 (Bambu Lab)[1]3670 ± 140 printed XY, ISO 178 (Bambu Lab)[4]
Charpy impact, notchedkJ/m²8.2 ± 1.6 printed XY, ISO 179, notched (Bambu Lab)[1]10.0 ± 0.7 printed XY dry and 28.0 ± 1.0 conditioned, ISO 179 notched (Polymaker Fiberon); Bambu Lab 7.2 ± 2.3[3][4]
Other impact dataCharpy unnotched 32.0 ± 2.5 printed XY (Bambu Lab, ISO 179)[1]Charpy unnotched 27.2 ± 2.2 printed XY (Bambu Lab, ISO 179). Stratasys FDM PA6/66-GF30-FR gives Izod notched 74.6-77.1 J/m printed XZ against 17.2-22.1 in ZX (ASTM D256)[4][21]
Layer adhesion / Z tensileMPa21 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 24 against 58 in XY[1]27 ± 5 (Bambu Lab) and 60.7 ± 1.1 (Polymaker Fiberon, dry) printed Z, ISO 527 — the two makers differ by more than a factor of two; Fiberon falls to 26.3 ± 1.5 conditioned. Stratasys FDM PA6/66-GF30-FR gives 23.7-24.4 at break printed ZX (ASTM D638)[4][3][21]
Brittleness1–5Moderate[1]Brittle — snaps with little warning; elongation at break 2.4 % in XY[3]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documentedRockwell M88 / R117 on extruded PA66-GF30 stock (ASTM D785)[22]
Creep resistance / sustained load1–5Below average — no creep test found; the foamed structure drops modulus to 2010 MPa and load is carried by a lower solid fraction[1][17]Good. Ensinger lists high creep resistance as a headline property of extruded PA66-GF30 stock; the rating is held below Excellent because equilibrium moisture uptake of 3.33 % softens the matrix in service[22][3]
Fatigue / repeated-flex resistance1–5Moderate — no foamed-grade S-N curve; unfilled printed ASA holds a fatigue limit at 25 % of tensile strength[1][23]Good. Ensinger lists high fatigue strength as a headline property of extruded PA66-GF30 stock[22]
Elasticity / flexibility1–5Rigid[1]Rigid[4]
Z strength as % of XY%66 by tensile, 41 by flexural (printed, Bambu Lab)[1]36 (Bambu Lab) to 76 (Polymaker Fiberon), printed; Stratasys FDM PA6/66-GF30-FR gives 39-41 (ZX against XZ tensile at break, ASTM D638)[4][3][21]
Thermal Properties
HDT at 0.45 MPa°C85 (ISO 75, 0.45 MPa, Bambu Lab) against 100 for unfilled Bambu Lab ASA[1][17]182 (Bambu Lab) and 191 (Polymaker Fiberon), ISO 75 at 0.45 MPa. Stratasys FDM PA6/66-GF30-FR gives 161 printed XY and 185 XZ (ASTM D648 at 66 psi)[4][3][21]
HDT at 1.8 MPa°C78 (ISO 75, 1.8 MPa, Bambu Lab) against 92 for unfilled Bambu Lab ASA[1][17]157 (Polymaker Fiberon) and 158 (Bambu Lab), ISO 75 at 1.8 MPa[4][3]
Glass transition (Tg)°CNot documented67 (Bambu Lab) and 70.4 (Polymaker Fiberon), DSC; Stratasys measures 51.5 on FDM PA6/66-GF30-FR (ASTM D7426)[4][3][21]
Melting point / Vicat°CNot documented214.5 (Polymaker Fiberon) and 219 (Bambu Lab) melting, DSC; Vicat 210–212 (ISO 306)[4][3]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[24]Not documented
Thermal expansion (CTE)µm/m·KNot documented48.6 on extruded PA66-GF30 stock (ASTM D696; source states 2.7e-5 in/in/°F). Stratasys measures much higher on printed FDM PA6/66-GF30-FR — 95.4 over -20 to 5 °C and 214 over 25 to 80 °C in XY (ASTM E831)[22][21]
Flammability / UL 94Flammable; no UL 94 rating published[17]Flammable; no UL 94 rating published for the grades surveyed[19]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; Formfutura states the foaming grade retains ApolloX's UV resistance[2][25]Months outdoors before embrittlement — unstabilised polyamide yellows under UV[14]
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[26]Withstands oils, fuels and alkalis[14]
Water / humidity resistance in service1–5Not documentedAbsorbs water, properties shift[18]
Food contactNot food safe[11]Not food-contact certified as filament[14]
Biodegradability / compostabilityNot biodegradable[11]Not biodegradable[14]
RecyclabilityNot accepted in household plastic collection[11]Not accepted in household plastic collection[14]
Electrical & ESD propertiesNot documentedSurface resistivity above 10¹² ohm — insulating (Polymaker Fiberon, ANSI/ESD S11.11)[3]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[27][10]Moderate — measurable VOCs and UFPs, ventilation advised[27]
VOC emission rateµg/minNot documentedUp to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study[27]
Ultrafine-particle emission rateparticles/minNot documented≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured[27]
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[10][27]Caprolactam, at up to 180 µg/min from nylon filament[27]
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[27][10]Ventilated room or enclosure recommended[27]
Dust & fibre handling hazardNot documentedGlass fibre is bound in the matrix; avoid inhaling sanding dust[3]
Post-Processing
Sanding & machiningSands well and takes filler before painting[11]Sands poorly — gums rather than powders[13]
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[11]Not documented
Gluing & solvent weldingSolvent-welds with acetone[26]Cyanoacrylate; no common solvent welds polyamide[13]
Vapour / chemical smoothingAcetone vapour smoothing works[26]No practical vapour smoothing[13]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[10]Not documented
Dimensional accuracy & detailMatte, textured surface that hides layer lines; colour lightens as the foaming degree rises, which doubles as a visual density cue[2]Not documented
Solvents & Solubility
Soluble inAcetone dissolves it (Polymaker); MEK, THF, ethyl acetate and the chlorinated solvents dissolve the styrenic backbone.[28][26]Formic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[29]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[30]Zinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[29]
Solvent welding & smoothing agentAcetone vapour, ~20 min at 80 °C over 5 mm of liquid; the foamed wall absorbs solvent, so cut the exposure well short.[31]None — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[29]

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 Aero Bambu Lab · 2026-08 · tds
  2. ApolloX Foaming Technical Data Sheet Formfutura · 2025-07 · tds
  3. Fiberon PA6-GF25 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  4. Bambu Filament Technical Data Sheet — PA6-GF Bambu Lab · 2026-08 · tds
  5. ASA Aero — product page Bambu Lab US Store · 2026-08 · vendor
  6. Polymaker product catalogue Polymaker · 2026-08 · vendor
  7. SUNLU Nylon-6 Glass Fiber (PA6-GF) 3D Printer Filament 1 kg — product page SUNLU · 2026-08 · vendor
  8. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  9. YXPOLYER PA6-GF Black 1 kg — product page YXPOLYER · 2026-08 · vendor
  10. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  11. ASA — material basics Polymaker Wiki · 2026-08 · doc
  12. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  13. Nylon — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  14. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  15. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  16. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  17. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  18. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  19. Fiberon PA6-CF20 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  20. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  21. FDM PA6/66-GF30-FR — Material Data Sheet Stratasys · 2026-07 · tds
  22. TECAMID 66 GF30 black (PA66-GF30) — stock shape properties Ensinger · 2026-08 · tds
  23. Mechanical, Fatigue, and Thermal Characterization of ASA, Nylon 12, PC and PC-ABS Manufactured by Fused Filament Fabrication (FFF) Polymers 18(2):302 · 2026-01 · paper
  24. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  25. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  26. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  27. 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
  28. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  29. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  30. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  31. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc