3D Printing Info

Filament comparison

ASA vs PLA-PHA

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

ASA guidePLA/PHA blend guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA comparisonsMore PLA-PHA comparisons
ASA vs PLA-PHA — documented properties and sources
PropertyASAASAPLA/PHA blendPLA
Market snapshot
Listing priceUSD/kg; dated snapshots$28.98/kg median; $17.99–$50.00/kg across 14 dated product listings$76.40/kg median; $76.40–$76.40/kg across 1 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 blended with polyhydroxyalkanoate, a bacterially fermented bio-polyester[3]
Densityg/cm³1.05 (Bambu Lab) to 1.13 (PolyLite ASA), ISO 1183; Prusament 1.07[4][5][2]1.2 (ISO 1183)[3]
Typical priceUSD/kg1 kg spools cluster near 30[6][7][8]Not documented
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[9][7][6][10][8][11][12][13][14]Not documented
Market availability1–5Stocked by most mainstream brands[6][7][11][8]Niche, a handful of specialist brands[3][15]
Spool sizes & diameters1.75 and 2.85 mm; 0.8, 1, 4 and 10 kg spools[11][8][6]1.75 and 2.85 mm; 750 g and 2200 g spools[3]
Typical applicationsOutdoor fittings, signage, automotive exterior trim and anything that has to hold colour and strength in sunlight[16][1]General-purpose printing where PLA's brittleness is the limiting factor[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[4][5][2]195–220 (colorFabb)[3]
Bed temperature°C75–110; Prusament 110 ± 5, Bambu Lab 80–100, PolyLite 75–95[4][5][2]50–60 (colorFabb)[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[5][17]Open frame is fine[3]
Recommended chamber temperature°C45–60 (Bambu Lab)[4]Not documented
Part cooling fanLow — Prusament 30 % within a 0–50 % range, Bambu Lab 0–80 %, PolyLite off[2][4][5]0–100 %; colorFabb states the blend runs on both heated and unheated beds[3][18]
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][17]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s10–16 (PrusaSlicer guidance for ABS/ASA)[19]3.2–8 at colorFabb's 40–100 mm/s, on a 0.4 mm nozzle at 0.2 mm layer[18][19]
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][17]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[2][17]Not documented
Stringing / oozing tendency1–5Slight[5]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile[17][2]Beginner — prints on any machine out of the box[3]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[17]Brass fine indefinitely[3]
Abrasiveness1–5Non-abrasive[17]Non-abrasive[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[20][21]Very low — unfilled PLA blend; Prusa lists no drybox and no hardened nozzle for PLA[21]
Heat-creep / jam sensitivity1–5Slightly sensitive[20]Not documented
Hotend requirementNo special hot-end required[20]Not documented
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[4][5][2]Moderate — the PLA matrix takes up 0.40–0.51 % saturated; colorFabb publishes no figure for the blend[22][23]
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)[4][5][2]Not documented
Drying temperature & time80 °C for 8 h (Bambu Lab); 70 °C for 7 h (Polymaker)[4][5]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing, rough surface and weak layers[24]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[24]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[24]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[24]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[4][5][2][25]62–64 (ISO 527-1A, colorFabb; two grades quoted)[3]
Young's modulusMPa2379 (PolyLite) to 2450 (Bambu Lab) printed XY, ISO 527; Prusament 1600, Formfutura 2020[4][5][2][25]2960–3070 (ISO 527-1A, colorFabb)[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[4][5][25][2]4 and 11 (ISO 527-1A, colorFabb; two grades quoted)[3]
Flexural strengthMPa64 ± 1 printed horizontal (Prusament, ISO 178); Bambu Lab 65 ± 5, PolyLite 73.4[2][4][5]Not documented
Flexural modulusMPa1920 ± 130 (Bambu Lab) to 3206 (PolyLite) printed XY, ISO 178; Prusament 2000[4][5][2]2500–3300 flexural modulus (ISO 178, colorFabb)[3]
Charpy impact, notchedkJ/m²10.3 (PolyLite) to 19.6 (Bambu Lab) printed XY, ISO 179, notched; Prusament 12 ± 1, Formfutura 18[5][4][2][25]2.8–3.7 (ISO 179, notched, colorFabb)[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][4]Not documented
Layer adhesion / Z tensileMPa11 ± 1 (Prusa interlayer adhesion test); 31 ± 4 (Bambu Lab) and 32 (PolyLite) printed Z tensile, ISO 527[2][4][5]Not documented
Brittleness1–5Tough — absorbs impact, yields before breaking[4][2]Moderate — colorFabb positions the blend as tougher and less brittle than its generic PLA grades[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[5][2]Poor — no PLA/PHA creep test; plain printed PLA sagged from 12 to 16.2–21.8 mm over 5 days at 1.25 kg[26][27][28]
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[29]Below average — no S-N curve for the blend; colorFabb positions it as tougher and less brittle than its generic PLA, which ran 38 000–49 000 cycles at 30 % of tensile strength[30][3]
Elasticity / flexibility1–5Rigid[4]Rigid[3]
Z strength as % of XY%84 (Bambu Lab, printed Z against XY tensile); 73 for PolyLite ASA[4][5]Not documented
Thermal Properties
HDT at 0.45 MPa°C93 (Prusament) to 103 (PolyLite), ISO 75 at 0.45 MPa; Bambu Lab 100[2][5][4]Not documented
HDT at 1.8 MPa°C86 (Prusament) to 100 (PolyLite), ISO 75 at 1.8 MPa; Bambu Lab 92[2][5][4]Not documented
Glass transition (Tg)°C98 (PolyLite, DSC)[5]Not documented
Melting point / Vicat°CAmorphous — no melting point; Vicat 105 (PolyLite, ISO 306)[5]Above 155 melting (ISO 3146-C)[3]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[31]Not documented
Thermal expansion (CTE)µm/m·K69 ± 17 in XY and 115 ± 24 in the build direction (printed, TMA, 40–70 °C)[32]Not documented
Flammability / UL 94Flammable; no UL 94 rating published for standard ASA[4]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 %[16]Degrades within weeks outdoors[33]
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[16]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[5]Not documented
Water / humidity resistance in service1–5Good — minor absorption[4]Not documented
Food contactNot food safe[1]Not documented
Biodegradability / compostabilityNot biodegradable[1]colorFabb states the PHA component is 100 % biodegradable[3]
RecyclabilityNot accepted in household plastic collection[1]Not documented
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[34][17]Low hazard — minimal VOC and particle emission[34]
VOC emission rateµg/min12–113 styrene, the range measured across the styrenic filaments tested; ASA itself was not among them[34]Not documented
Ultrafine-particle emission rateparticles/min2 × 10¹⁰ to 9 × 10¹⁰ median for ABS, the closest styrenic tested; ASA itself was not measured[34]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[17][34]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[34][17]None needed in a normal room[34]
Post-Processing
Sanding & machiningSands well and takes filler before painting[1]Not documented
Gluing & solvent weldingSolvent-welds with acetone[5]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works — ASA dissolves in acetone[5]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a dedicated Support for ABS that also serves ASA[17]Not documented
Dimensional accuracy & detailWarping and cooling-stress cracking are the accuracy limits; Stratasys notes the matte finish as a deliberate aesthetic advantage[17][16]Not documented
Solvents & Solubility
Soluble inAcetone dissolves it (Polymaker); MEK, THF, ethyl acetate and the chlorinated solvents dissolve the styrenic backbone.[35][5]Chloroform dissolves the PLA phase (10 % w/v, 2–4 h at 23 °C); THF and DMF need 65 °C. Laboratory reagents.[36]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[37]Acetone, ethyl acetate and toluene plasticise it but dissolve <1 % even at 65 °C; submersion in acetone crazes and destroys parts.[36][38]
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.[38]Chloroform vapour smooths and welds PLA at the cost of tensile strength; acetone does not smooth it at all.[39][38]

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. PLA/PHA technical data sheet colorFabb · 2026-08 · tds
  4. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  5. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  6. ASA — product page Bambu Lab US Store · 2026-08 · vendor
  7. Polymaker product catalogue Polymaker · 2026-08 · vendor
  8. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  9. Filastruder product catalogue Filastruder · 2026-08 · vendor
  10. ZYLtech ASA-GF Glass Fiber filament — product page ZYLtech · 2026-08 · vendor
  11. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  12. IEMAI ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  13. SUNLU ASA 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  14. YXPOLYER ASA Purple product page YXPOLYER · 2026-08 · vendor
  15. woodFill technical data sheet colorFabb · 2026-08 · tds
  16. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  17. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  18. glowFill technical data sheet colorFabb · 2026-08 · tds
  19. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  20. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  21. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  22. Bambu Filament Technical Data Sheet V3.0 — PLA Basic Bambu Lab · 2026-08 · tds
  23. PolyLite PLA Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  24. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  25. ApolloX Technical Data Sheet Formfutura · 2026-08 · tds
  26. BambuLab PLA Basic vs PLA Tough vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  27. Polymaker PLA Pro vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  28. Carbon Fiber PLA vs META-PLA vs PLA+ vs PLA by Sunlu — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  29. 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
  30. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  31. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  32. Basalt Fiber Composites with Reduced Thermal Expansion for Additive Manufacturing Polymers 14(15):3216 · 2022-08 · paper
  33. PLA — material guide Prusa Knowledge Base · 2026-08 · doc
  34. 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
  35. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  36. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  37. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  38. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  39. 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