3D Printing Info

Filament comparison

ASA-GF vs PA11

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

Glass-fibre ASA (ASA-GF) guidePA11 (Nylon 11) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-GF comparisonsMore PA11 comparisons
ASA-GF vs PA11 — documented properties and sources
PropertyGlass-fibre ASA (ASA-GF)ASAPA11 (Nylon 11)PA
Market snapshot
Listing priceUSD/kg; dated snapshots$29.95/kg median; $26.99–$33.99/kg across 3 dated product listings$194.98/kg median; $194.98–$194.98/kg across 1 dated product listings
Identity & Market
Base polymer / chemistryASA reinforced with chopped glass fibre — 10 wt% (Spectrum ASA-X GF10), 15 wt% (ZYLtech ASA-GF)[1][2]Polyamide 11, polymerised from castor-oil-derived aminoundecanoic acid — a bio-based nylon[3][4]
Densityg/cm³1.07 (ZYLtech) and 1.11 (Spectrum), ISO 1183[1][2]1.02 (ISO 1183)[3]
Typical priceUSD/kg1 kg spools cluster near 28[5][6]Not documented
Price range across brandsUSD/kg27–34 across brands; Ambrosia 27, ZYLtech 30, Siraya Tech 34[5][6][7]Not documented
Market availability1–5Niche, a handful of specialist brands[5][1][2]Niche, a handful of specialist brands[4]
Spool sizes & diameters1.75 and 2.85 mm; 1 kg spools[2][5]1.75 mm; 1 kg spools[4]
Typical applicationsOutdoor brackets and mounts that need stiffness and dimensional stability under sun and moisture[1][2]Tough, chemically resistant functional parts; Prusa targets it at impact-loaded and vibration-loaded components[4]
Diameter tolerance± mm±0.01 at 95 % probability and ±0.02 at 100 % (ZYLtech)[2]±0.02 (Prusament)[3]
Printing Parameters
Nozzle temperature°C240–270 (Spectrum); 240–280 (ZYLtech)[1][2]275 ± 10 (Prusament)[3]
Bed temperature°C80–100 (Spectrum); 90–110 on PEI (ZYLtech)[1][2]100 ± 10 (Prusament)[3]
Enclosure / chamber requirement1–5Enclosure recommended[8]Enclosure required (passive) — Prusament specifies a 55 ± 5 °C chamber[3]
Recommended chamber temperature°CNot documented55 ± 5 (Prusament)[3]
Part cooling fan0–20 % (Spectrum)[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[9][10]PA nylon sheet (Prusament)[3]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s2.4–5.6 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[1][2][11]Not documented
Warping tendency1–5Moderate — needs adhesion aid or draught shield[8]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[9]Not documented
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[9]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; ZYLtech requires a hardened nozzle of 0.6 mm or larger[2][1]Advanced — enclosure, hardware upgrades, tuning[3][12]
Extruder requirementZYLtech specifies a hardened nozzle 0.6 mm or larger; Spectrum bases its settings on a 0.5 mm nozzle[2][1]Prusa printed its test specimens with a high-flow CHT nozzle[3]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required — Spectrum recommends ruby or hardened, ZYLtech requires hardened[1][2]Brass fine indefinitely for unfilled grades[12]
Abrasiveness1–5Highly abrasive — standard GF composite[1][2]Non-abrasive when unfilled[12]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[13]High — jams from moisture, heat creep or particles[14]
Heat-creep / jam sensitivity1–5Slightly sensitive[10]Not documented
Hotend requirementNo special hotend required[10]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — the ASA matrix takes up 0.40–0.45 % saturated at 25 °C / 55 % RH; no glass-filled grade publishes its own figure[15][16][17]High (0.8–2 %) — Prusa measures 0.46 % after 7 days at 22 % RH, but PA11 sits between PA12 and PA6 in the family[3][14]
Equilibrium moisture content at ~50 % RH%Not documented0.26 after 24 h and 0.46 after 7 days (Prusa Polymers method)[3]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[14]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[14]Prusa publishes no dry-versus-conditioned columns; the CoPA reference shows the PA-family response — stiffness and strength fall sharply, impact and elongation rise[18][19]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[14]Sealed below 20 % RH with desiccant[14]
Mechanical Properties
Tensile strength (XY)MPa33–36 at break, ISO 527 (ZYLtech; specimen type not stated); Spectrum quotes 55 at break on injection-moulded specimens[2][1]38.3 ± 0.8 printed horizontal and 39.5 ± 0.5 printed vertical at yield, ISO 527-1[3]
Young's modulusMPa2540–2890 (ZYLtech; specimen type not stated) and 2550 (Spectrum, injection-moulded), ISO 527[2][1]1200 printed, both orientations, ISO 527-1[3]
Elongation at break%3.4 at break (ZYLtech; specimen type not stated); Spectrum quotes 2.80 at yield on injection-moulded specimens[2][1]5.6 ± 0.1 at yield, printed, ISO 527-1[3]
Flexural modulusMPa2130–2480 flexural modulus, ISO 178 (ZYLtech; specimen type not stated)[2]1100 printed horizontal and 1000 printed vertical, ISO 178[3]
Charpy impact, notchedkJ/m²8.3 notched Charpy at 23 °C on injection-moulded specimens (Spectrum, ISO 179-1eA); ZYLtech publishes notched Izod 6.9 by ISO 180 instead[1][2]12.9 ± 2.1 printed horizontal and 11.7 ± 1.2 printed vertical, ISO 179-1 notched[3]
Other impact dataCharpy unnotched 25 kJ/m² at 23 °C on injection-moulded specimens (Spectrum, ISO 179-1eU); ZYLtech notched Izod 6.9 kJ/m² (ISO 180)[1][2]Not documented
Layer adhesion / Z tensileMPaNot documented32 ± 1 (Prusa Polymers interlayer adhesion test) — the highest interlayer figure Prusa publishes for any of its filaments[3]
Brittleness1–5Brittle — snaps with little warning; elongation at break 3.4 %[2]Tough — absorbs impact, yields before breaking[3]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documented70 Shore D (Prusa Polymers method)[3]
Creep resistance / sustained load1–5Good — no creep test found; chopped glass fibre lifts modulus to 2540–2890 against 2379–2450 for unfilled ASA[2][16][15]Not documented
Fatigue / repeated-flex resistance1–5Below average — no GF-grade S-N curve; elongation at break falls to 3.4 % against 6.7–9.2 % for unfilled ASA[2][16][15]Excellent — living hinges viable[12]
Elasticity / flexibility1–5Rigid[2]Semi-flexible[3]
Z strength as % of XY%Not documented84 — Prusa publishes a tensile anisotropy coefficient of 0.84, the ratio of Z to XY tensile strength[3]
Thermal Properties
HDT at 0.45 MPa°C100 (Spectrum, injection-moulded, ISO 75 at 0.45 MPa)[1]58.7 (ISO 75, 0.45 MPa)[3]
HDT at 1.8 MPa°C97–99 unannealed (ZYLtech, ISO 75 at 1.8 MPa; specimen type not stated); Spectrum 90 on injection-moulded specimens[2][1]49.9 (ISO 75, 1.8 MPa)[3]
Melting point / Vicat°CAmorphous ASA matrix; Vicat 98 (Spectrum, ISO 306). ZYLtech quotes a 210–220 °C melting range by ISO 11357 for its grade[1][2]Not documented
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[20]Not documented
Flammability / UL 94Flammable; no UL 94 rating published[15]Not documented
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; Spectrum states the parts resist prolonged UV and moisture exposure[1][21]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[16]Not documented
Water / humidity resistance in service1–5Not documentedAbsorbs water, properties shift[18]
Food contactNot food safe[9]Not documented
Biodegradability / compostabilityNot biodegradable[9]Bio-based — the monomer comes from castor oil[4]
RecyclabilityNot accepted in household plastic collection[9]Not documented
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[22][8]Moderate — measurable VOCs and UFPs, ventilation advised[22]
VOC emission rateµg/minNot documentedUp to 180 caprolactam, the dominant VOC from nylon; total VOC reached nearly 200 µg/min, the highest of the nine filaments tested[22]
Ultrafine-particle emission rateparticles/minNot documented≈2 × 10⁸ median — low for ultrafine particles despite the highest VOC mass of any filament tested[22]
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[8][22]Caprolactam, at up to 180 µg/min from nylon filament — the largest single-VOC emission rate measured in the study[22]
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[22][8]Ventilated room or enclosure recommended[22]
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust[1]Not documented
Post-Processing
Sanding & machiningSands well and takes filler before painting[9]Not documented
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[9]Not documented
Gluing & solvent weldingSolvent-welds with acetone[16]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works[16]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[8]Not documented
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone.[23][16]Dissolved at 23 °C by formic acid, phenol, m-cresol, 96 % sulphuric acid or hexafluoroisopropanol — all laboratory reagents.[24][23]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[25]Mineral acids, oxidants, halogens and zinc chloride solutions attack the amide bond; ordinary solvents do not (BASF, PA6/66).[24]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[26][16]None — nylon's only solvents are formic acid, phenol and HFIP, all of which degrade the part they wet.[24]

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. Spectrum ASA-X GF10 Technical Data Sheet (mechanical and thermal data marked injection-moulded) Spectrum Filaments · 2026-08 · tds
  2. ZYLtech ASA-GF Filament Technical Data Sheet v1 ZYLtech · 2026-08 · tds
  3. Prusament PA11 Technical Datasheet v1.0 Prusa Polymers · 2026-07 · tds
  4. Prusament PA11 — material page Prusa Polymers · 2026-08 · doc
  5. Filastruder product catalogue Filastruder · 2026-08 · vendor
  6. ZYLtech ASA-GF Glass Fiber filament — product page ZYLtech · 2026-08 · vendor
  7. Siraya Tech Fibreheart ASA-GF Filament product page Siraya Tech · 2026-08 · vendor
  8. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  9. ASA — material basics Polymaker Wiki · 2026-08 · doc
  10. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  11. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  12. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  13. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  14. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  15. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  16. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  17. Prusament ASA Technical Datasheet v1.1 Prusa Polymers · 2024-05 · tds
  18. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  19. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  20. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  21. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  22. 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
  23. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  24. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  25. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  26. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc