3D Printing Info

Filament comparison

ASA vs PLA-GF

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

ASA guideGlass-fibre PLA (PLA-GF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA comparisonsMore PLA-GF comparisons
ASA vs PLA-GF — documented properties and sources
PropertyASAASAGlass-fibre PLA (PLA-GF)PLA
Market snapshot
Listing priceUSD/kg; dated snapshots$28.98/kg median; $17.99–$50.00/kg across 14 dated product listings$44.99/kg median; $29.99–$59.99/kg across 2 dated product listings
Identity & Market
Base polymer / chemistryAcrylonitrile styrene acrylate — ABS with the butadiene rubber phase replaced by an acrylate rubber that has no UV-vulnerable double bonds[1][2]PLA filled with chopped glass fibre — 12 wt% (Polymaker HT-PLA-GF), 15–20 wt% (eSUN PLA-GF). Bambu Lab PLA Galaxy uses glass microspheres, not fibre, and is not equivalent[3][4][5]
Densityg/cm³1.05 (Bambu Lab) to 1.13 (PolyLite ASA), ISO 1183; Prusament 1.07[6][7][2]1.31 (eSUN) to 1.337 (Polymaker), ISO 1183 / GB/T 1033[3][4]
Typical priceUSD/kg1 kg spools cluster near 30[8][9][10]1 kg spools cluster near 30[11][12]
Price range across brandsUSD/kg18–50 across brands; IEMAI 18, SUNLU 18, Ambrosia 23, Polymaker 26, Bambu Lab 30, YXPOLYER 30, Prusament 41, 3DXTech 50[13][9][8][14][10][15][16][17][18]30–60 across brands; Polymaker 30, Proto-pasta 60[11][12]
Market availability1–5Stocked by most mainstream brands[8][9][15][10]Niche, a handful of specialist brands[11][12][4]
Spool sizes & diameters1.75 and 2.85 mm; 0.8, 1, 4 and 10 kg spools[15][10][8]1.75 mm; 0.5 and 1 kg spools[12][9]
Typical applicationsOutdoor fittings, signage, automotive exterior trim and anything that has to hold colour and strength in sunlight[19][1]Stiff brackets and fixtures; the Polymaker grade is aimed at parts annealed for heat resistance[3]
Diameter tolerance± mm±0.04 (Prusament)[2]Not documented
Printing Parameters
Nozzle temperature°C230–270 across brands; Prusament 260 ± 10, Bambu Lab 240–270, PolyLite 230–260[6][7][2]210–230 (Polymaker HT-PLA-GF)[3]
Bed temperature°C75–110; Prusament 110 ± 5, Bambu Lab 80–100, PolyLite 75–95[6][7][2]25–60 (Polymaker HT-PLA-GF)[3]
Enclosure / chamber requirement1–5Enclosure recommended — Polymaker calls a chamber needed at ambient temperature, Bambu Lab requires an enclosed printer and rules out its P1P and A-series machines[7][20]Open frame is fine[3]
Recommended chamber temperature°C45–60 (Bambu Lab)[6]Not documented
Part cooling fanLow — Prusament 30 % within a 0–50 % range, Bambu Lab 0–80 %, PolyLite off[2][6][7]Fan on — eSUN specifies 100 %[4]
Bed surface & adhesion aidSatin, smooth PEI or powder-coated sheet with a glue stick; Prusa advises a 3 mm or taller brim on large parts[2][20]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s10–16 (PrusaSlicer guidance for ABS/ASA)[21]28 at Polymaker's stated 350 mm/s on a 0.4 mm nozzle at 0.2 mm layer; eSUN prints its specimens at 60 mm/s[3][4][21]
Warping tendency1–5High — enclosure needed for reliable large parts; Prusa recommends a tall brim and Bambu Lab attributes cracking to cooling stress exceeding interlayer adhesion[2][20]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[2][20]Not documented
Stringing / oozing tendency1–5Slight[7]Not documented
Shrinkage%Not documented0.05 in X-Y and Z, 0.10 diagonal (Polymaker HT-PLA-GF)[3]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile[20][2]Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[3]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[20]Hardened steel required[3]
Abrasiveness1–5Non-abrasive[20]Highly abrasive — standard GF composite[3]
Nozzle clog risk1–5Low — no special hot-end required and clogging is not among the listed drawbacks; Prusa lists no drybox and no hardened nozzle[22][23]Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[24]
Heat-creep / jam sensitivity1–5Slightly sensitive[22]Not documented
Hotend requirementNo special hot-end required[22]Hardened steel or ruby nozzle; Polymaker's own slicer preset sets a minimum nozzle hardness of 40 HRC[3]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.45 % saturated at 25 °C / 55 % RH (Bambu Lab) and 0.40 % equilibrium (Polymaker); Prusa measures only 0.17 % after 7 days at 22 % RH[6][7][2]Moderate — the PLA matrix takes up 0.40–0.51 % saturated; no glass-filled grade publishes its own figure[25][26]
Equilibrium moisture content at ~50 % RH%0.45 saturated at 25 °C / 55 % RH (Bambu Lab); 0.40 equilibrium (Polymaker); 0.17 after 7 days at 24 °C / 22 % RH (Prusa)[6][7][2]Not documented
Drying temperature & time80 °C for 8 h (Bambu Lab); 70 °C for 7 h (Polymaker)[6][7]60 °C for 6 h (Polymaker HT-PLA-GF)[3]
Symptoms when wetBubbling and popping at the nozzle, stringing, rough surface and weak layers[27]Not documented
Effect of moisture on strengthNo dry-versus-conditioned figures are published for ASA; Polymaker groups the styrenics as moderate-sensitivity and the loss shows as poor layer adhesion rather than a stated strength delta[27]Polymaker rates PLA low-sensitivity and publishes no dry-versus-conditioned figures for this grade; absorbed water flashes to steam and shows as bubbling and poor layer adhesion[27]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[27]Not documented
Mechanical Properties
Tensile strength (XY)MPa37 ± 3 (Bambu Lab) to 43.8 (PolyLite) printed XY, ISO 527; Prusament 42 ± 1 at yield; Formfutura quotes 47.5 at yield[6][7][2][28]50.1 as printed and 50.2 annealed, printed XY, ISO 527 (Polymaker); eSUN quotes 59.3 by GB/T 1040[3][4]
Young's modulusMPa2379 (PolyLite) to 2450 (Bambu Lab) printed XY, ISO 527; Prusament 1600, Formfutura 2020[6][7][2][28]3794 as printed, 4207 annealed, printed XY, ISO 527 (Polymaker)[3]
Elongation at break%6.7 (PolyLite) to 9.2 (Bambu Lab) at break, printed XY, ISO 527; Formfutura quotes 15 at break, Prusament 3.4 at yield[6][7][28][2]2.77 as printed, 2.3 annealed, printed XY, ISO 527 (Polymaker); eSUN quotes 7.99[3][4]
Flexural strengthMPa64 ± 1 printed horizontal (Prusament, ISO 178); Bambu Lab 65 ± 5, PolyLite 73.4[2][6][7]86.4 printed XY, ISO 178 (Polymaker)[3]
Flexural modulusMPa1920 ± 130 (Bambu Lab) to 3206 (PolyLite) printed XY, ISO 178; Prusament 2000[6][7][2]3685 printed XY, ISO 178 (Polymaker); eSUN quotes 4415 flexural modulus by GB/T 9341[3][4]
Charpy impact, notchedkJ/m²10.3 (PolyLite) to 19.6 (Bambu Lab) printed XY, ISO 179, notched; Prusament 12 ± 1, Formfutura 18[7][6][2][28]5.31 ± 0.46 as printed and 4.92 ± 0.50 annealed (printed XY, ISO 179, notched); Z 4.28 ± 0.18[3]
Other impact dataCharpy unnotched 25 ± 3 printed horizontal and 38 ± 11 printed vertical (Prusament, ISO 179-1); Bambu Lab 41.0 ± 2.3 printed XY[2][6]Izod 10.16 kJ/m² (eSUN, GB/T 1843)[4]
Layer adhesion / Z tensileMPa11 ± 1 (Prusa interlayer adhesion test); 31 ± 4 (Bambu Lab) and 32 (PolyLite) printed Z tensile, ISO 527[2][6][7]23.7 as printed, 22.5 annealed, printed Z, ISO 527 (Polymaker)[3]
Brittleness1–5Tough — absorbs impact, yields before breaking[6][2]Very brittle — elongation at break 2.77 % in XY and 0.85 % in Z[3]
Hardness (scale-specific)Shore A / Shore D / Rockwell78 Shore D (Prusa Polymers method)[2]Not documented
Creep resistance / sustained load1–5Moderate — no printed-ASA creep test found; Tg of 98 °C keeps room-temperature service far below softening, unlike PLA[7][2]Poor — no GF-grade creep test; plain printed PLA sagged from 12 to 16.2–21.8 mm over 5 days at 1.25 kg[29][30][31]
Fatigue / repeated-flex resistance1–5Moderate — fatigue limit at 25 % of tensile strength (8 MPa) on printed specimens, the best of the four polymers in that study[32]Poor — no grade-specific S-N curve; plain printed PLA ran 38 000–49 000 cycles at 30 % of tensile strength and elongation at break falls to 2.77 % in XY and 0.85 % in Z[33][3]
Elasticity / flexibility1–5Rigid[6]Rigid[3]
Z strength as % of XY%84 (Bambu Lab, printed Z against XY tensile); 73 for PolyLite ASA[6][7]47 as printed (23.7 Z against 50.1 XY), printed[3]
Wear resistance & frictionNot documentedeSUN describes high wear resistance and positions the grade for wear parts[4]
Thermal Properties
HDT at 0.45 MPa°C93 (Prusament) to 103 (PolyLite), ISO 75 at 0.45 MPa; Bambu Lab 100[2][7][6]75.5 as printed, 114.7 after annealing (ISO 75, 0.45 MPa) — the point of the material[3]
HDT at 1.8 MPa°C86 (Prusament) to 100 (PolyLite), ISO 75 at 1.8 MPa; Bambu Lab 92[2][7][6]59.7 as printed, 84 after annealing (ISO 75, 1.8 MPa)[3]
Glass transition (Tg)°C98 (PolyLite, DSC)[7]59.8 (DSC)[3]
Melting point / Vicat°CAmorphous — no melting point; Vicat 105 (PolyLite, ISO 306)[7]174.9 peak melt (DSC); Vicat 148.9 as printed, 148.3 annealed[3]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[34]Not documented
Annealing responseNot documentedAnnealing lifts HDT at 0.45 MPa from 75.5 to 114.7 °C and modulus from 3794 to 4207 MPa[3]
Thermal expansion (CTE)µm/m·K69 ± 17 in XY and 115 ± 24 in the build direction (printed, TMA, 40–70 °C)[35]Not documented
Flammability / UL 94Flammable; no UL 94 rating published for standard ASA[6]Not documented
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use. After 1000 h of QUV exposure to ASTM G154 Stratasys measured yield strength falling only from 30.5 to 30.3 MPa and stress at break by 3.0 %[19]Degrades within weeks outdoors[36]
Outdoor durability1000 h QUV per ASTM G154, cycling 8 h at 60 °C and 4 h at 50 °C with condensation: yield 30.5 → 30.3 MPa, stress at break 30.5 → 29.5 MPa, elongation 2.8 → 2.3 %, modulus 1.82 → 1.95 GPa[19]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[7]Not documented
Water / humidity resistance in service1–5Good — minor absorption[6]Not documented
Food contactNot food safe[1]Not documented
Biodegradability / compostabilityNot biodegradable[1]Not documented
RecyclabilityNot accepted in household plastic collection[1]Not documented
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[37][20]Low hazard — minimal VOC and particle emission[37]
VOC emission rateµg/min12–113 styrene, the range measured across the styrenic filaments tested; ASA itself was not among them[37]Not documented
Ultrafine-particle emission rateparticles/min2 × 10¹⁰ to 9 × 10¹⁰ median for ABS, the closest styrenic tested; ASA itself was not measured[37]Not documented
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[20][37]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[37][20]None needed in a normal room[37]
Dust & fibre handling hazardNot documentedGlass fibre is bound in the matrix; avoid inhaling sanding dust[38]
Post-Processing
Sanding & machiningSands well and takes filler before painting[1]Not documented
Gluing & solvent weldingSolvent-welds with acetone[7]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works — ASA dissolves in acetone[7]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a dedicated Support for ABS that also serves ASA[20]Not documented
Dimensional accuracy & detailWarping and cooling-stress cracking are the accuracy limits; Stratasys notes the matte finish as a deliberate aesthetic advantage[20][19]Near-zero shrinkage — 0.05 % in X-Y and Z (Polymaker)[3]
Solvents & Solubility
Soluble inAcetone dissolves it (Polymaker); MEK, THF, ethyl acetate and the chlorinated solvents dissolve the styrenic backbone.[39][7]Chloroform dissolves the PLA matrix (10 % w/v, 2–4 h at 23 °C) and leaves the filler as loose sludge; laboratory reagent.[40]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[41]Acetone, ethyl acetate and toluene plasticise the matrix but dissolve <1 % even at 65 °C; acetone submersion crazes parts.[40][42]
Solvent welding & smoothing agentAcetone vapour, ~20 min at 80 °C over 5 mm of liquid (15–40 min across brands); layer adhesion up, tensile slightly down.[42]Chloroform vapour attacks only the resin fraction, so the filler is left standing proud; no workshop-safe agent exists.[43][42]

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. ASA — material basics Polymaker Wiki · 2026-08 · doc
  2. Prusament ASA Technical Datasheet v1.1 Prusa Polymers · 2024-05 · tds
  3. Polymaker HT-PLA-GF Technical Data Sheet V1.1 Polymaker · 2026-08 · tds
  4. eSUN ePLA-GF Technical Data Sheet V1.0 (Nov 2023) eSUN (copy hosted on 3d.nice-cdn.com) · 2023-11 · tds
  5. Bambu Filament Technical Data Sheet V1.0 — PLA Galaxy Bambu Lab · 2026-08 · tds
  6. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  7. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  8. ASA — product page Bambu Lab US Store · 2026-08 · vendor
  9. Polymaker product catalogue Polymaker · 2026-08 · vendor
  10. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  11. Polymaker HT-PLA-GF — product page Polymaker Shop · 2026-08 · vendor
  12. Proto-pasta product catalogue Proto-pasta · 2026-08 · vendor
  13. Filastruder product catalogue Filastruder · 2026-08 · vendor
  14. ZYLtech ASA-GF Glass Fiber filament — product page ZYLtech · 2026-08 · vendor
  15. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  16. IEMAI ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  17. SUNLU ASA 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  18. YXPOLYER ASA Purple product page YXPOLYER · 2026-08 · vendor
  19. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  20. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  21. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  22. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  23. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  24. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  25. Bambu Filament Technical Data Sheet V3.0 — PLA Basic Bambu Lab · 2026-08 · tds
  26. PolyLite PLA Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  27. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  28. ApolloX Technical Data Sheet Formfutura · 2026-08 · tds
  29. BambuLab PLA Basic vs PLA Tough vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  30. Polymaker PLA Pro vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  31. Carbon Fiber PLA vs META-PLA vs PLA+ vs PLA by Sunlu — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  32. 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
  33. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  34. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  35. Basalt Fiber Composites with Reduced Thermal Expansion for Additive Manufacturing Polymers 14(15):3216 · 2022-08 · paper
  36. PLA — material guide Prusa Knowledge Base · 2026-08 · doc
  37. 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
  38. StoneFil safety data sheet Formfutura · 2026-08 · msds
  39. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  40. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  41. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  42. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  43. Effect of vapour smoothing in trichloromethane on 3D printed PLA — surface, mechanical and chemical structure Pitale, Keche & Chopra, Engineering Research Express 6(4) 045579 · 2024-12 · paper