3D Printing Info

Filament comparison

ASA vs PETG

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

ASA guidePETG guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA comparisonsMore PETG comparisons
ASA vs PETG — documented properties and sources
PropertyASAASAPETGPETG
Market snapshot
Listing priceUSD/kg; dated snapshots$28.98/kg median; $17.99–$50.00/kg across 14 dated product listings$19.99/kg median; $8.99–$69.99/kg across 21 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]Polyethylene terephthalate glycol copolymer — PET with a glycol comonomer that suppresses crystallisation[3][4]
Densityg/cm³1.05 (Bambu Lab) to 1.13 (PolyLite ASA), ISO 1183; Prusament 1.07[5][6][2]1.24–1.30 (ISO 1183)[3][4][7][8]
Typical priceUSD/kg1 kg spools cluster near 30[9][10][11]1 kg spools cluster near 20[12][10][11]
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][10][9][14][11][15][16][17][18]12–70 across brands; IEMAI 12, ELEGOO 14, CHCKX 14, Bambu Lab 18–20, Hatchbox 26, Prusament 38, Prusament PETG V0 70[12][10][19][11][20][21]
Market availability1–5Stocked by most mainstream brands[9][10][15][11]Ubiquitous, every brand and retailer[12][10][22][11]
Spool sizes & diameters1.75 and 2.85 mm; 0.8, 1, 4 and 10 kg spools[15][11][9]1.75 and 2.85 mm; 0.75, 0.8 and 1 kg spools plus spool-less refills[10][11]
Typical applicationsOutdoor fittings, signage, automotive exterior trim and anything that has to hold colour and strength in sunlight[23][1]Functional parts, enclosures and outdoor fittings that need more toughness and heat tolerance than PLA[3][4]
Diameter tolerance± mm±0.04 (Prusament)[2]±0.02 (Prusament)[3]
Printing Parameters
Nozzle temperature°C230–270 across brands; Prusament 260 ± 10, Bambu Lab 240–270, PolyLite 230–260[5][6][2]230–260 across brands; Prusament 250 ± 10, Polymaker 240–260[3][4][8]
Bed temperature°C75–110; Prusament 110 ± 5, Bambu Lab 80–100, PolyLite 75–95[5][6][2]60–90; Prusament 80 ± 10, Polymaker 60–70[3][8]
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[6][24]Open frame is fine[8]
Recommended chamber temperature°C45–60 (Bambu Lab)[5]Not documented
Part cooling fanLow — Prusament 30 % within a 0–50 % range, Bambu Lab 0–80 %, PolyLite off[2][5][6]Around 50 %; Polymaker specifies 20–60 %, less than PLA to protect layer bonding[3][8]
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][24]Textured PEI, satin or powder-coated sheets. On smooth PEI a glue stick is used as a release agent, not an adhesive — PETG bonds to bare PEI hard enough to tear the sheet[3][8]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s10–16 (PrusaSlicer guidance for ABS/ASA)[25]8–15 (PrusaSlicer guidance); My Tech Fun ran Bambu Lab PETG Basic at 13 mm³/s[25][26]
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][24]Slight — corner lift on large flat parts[3][8]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[2][24]Needs the right surface or a thin adhesive — the problem is releasing the part, not sticking it[3]
Stringing / oozing tendency1–5Slight[6]Moderate — retraction tuning needed[3][8]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile[24][2]Easy — minor profile tuning[8]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[24]Brass fine indefinitely[25]
Abrasiveness1–5Non-abrasive[24]Non-abrasive[8]
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[27][28]Low — no special hot-end required and clogging is not among the listed drawbacks; Prusa lists no drybox and no hardened nozzle[29][28]
Heat-creep / jam sensitivity1–5Slightly sensitive[27]Slightly sensitive[29]
Hotend requirementNo special hot-end required[27]No special hot-end required[29]
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[5][6][2]Moderate (0.3–0.8 %) — Bambu Lab reports 0.40 % saturated at 25 °C / 55 % RH; Prusa measures only 0.07 % in 24 h and 0.10 % in 7 days at the drier 22 % RH[3][30]
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)[5][6][2]0.10 after 7 days at 24 °C / 22 % RH (Prusa Polymers); 0.40 saturated at 25 °C / 55 % RH (Bambu Lab)[3][30]
Drying temperature & time80 °C for 8 h (Bambu Lab); 70 °C for 7 h (Polymaker)[5][6]60–65 °C for 6–8 h[8][30]
Symptoms when wetBubbling and popping at the nozzle, stringing, rough surface and weak layers[31]Bubbling and popping at the nozzle, stringing and a rough surface[3]
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[31]Polymaker groups PETG with nylon, PVA and TPU as highly hygroscopic and shows a before-and-after-drying comparison; the loss appears as poor layer adhesion and weak, brittle layers rather than a published dry-versus-conditioned figure[31]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[31]Sealed with desiccant; Polymaker groups PETG with the highly hygroscopic materials[31][32]
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[5][6][2][33]38–51 (printed XY, ISO 527); Prusament 47 ± 2 at yield; 62 on My Tech Fun 4×4 mm bars[3][4][7][34]
Young's modulusMPa2379 (PolyLite) to 2450 (Bambu Lab) printed XY, ISO 527; Prusament 1600, Formfutura 2020[5][6][2][33]1500–2311 (printed XY, ISO 527)[3][4][7][8]
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[5][6][33][2]5.2–9.3 at break (printed XY, ISO 527); Prusament 5.1 at yield[4][7][8][3]
Flexural strengthMPa64 ± 1 printed horizontal (Prusament, ISO 178); Bambu Lab 65 ± 5, PolyLite 73.4[2][5][6]58–80 (printed XY, ISO 178); Prusament 66 ± 2[3][4][7][8]
Flexural modulusMPa1920 ± 130 (Bambu Lab) to 3206 (PolyLite) printed XY, ISO 178; Prusament 2000[5][6][2]1068–2277 (printed XY, ISO 178)[3][4][7][8]
Charpy impact, notchedkJ/m²10.3 (PolyLite) to 19.6 (Bambu Lab) printed XY, ISO 179, notched; Prusament 12 ± 1, Formfutura 18[6][5][2][33]2.6 (PolyLite) to 11.6 (PolyMax) printed XY, ISO 179, notched; Prusament 6 ± 1[4][7][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][5]Charpy unnotched does not break on Prusa's 4 J pendulum (ISO 179-1); Izod 3.37 kJ/m² on My Tech Fun printed bars[3][34]
Layer adhesion / Z tensileMPa11 ± 1 (Prusa interlayer adhesion test); 31 ± 4 (Bambu Lab) and 32 (PolyLite) printed Z tensile, ISO 527[2][5][6]18 ± 4 (Prusa interlayer adhesion test); 42.8 printed Z for PolyLite PETG; 33 on My Tech Fun bars[3][4][34]
Brittleness1–5Tough — absorbs impact, yields before breaking[5][2]Moderate[3][4]
Hardness (scale-specific)Shore A / Shore D / Rockwell78 Shore D (Prusa Polymers method)[2]74 Shore D (Prusa Polymers method); measured on printed bars at 68.2 for Extrudr PETG, 72 for Fiberlogy PETG and 72.8 for Prusament PETG[3][34][35][36]
Creep resistance / sustained load1–5Moderate — no printed-ASA creep test found; Tg of 98 °C keeps room-temperature service far below softening, unlike PLA[6][2]Below average — a 12 mm bar sagged to 18.2 mm (Fiberlogy) and 19.4 mm (Bambu Lab Basic) over 5 days at 1.25 kg[34][26]
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[37]Moderate — 79 000–193 000 cycles at 30 % of tensile strength, about three times printed PLA (R = 0.2, 7 Hz)[38]
Elasticity / flexibility1–5Rigid[5]Slightly flexible in thin sections[3]
Z strength as % of XY%84 (Bambu Lab, printed Z against XY tensile); 73 for PolyLite ASA[5][6]84 (PolyLite, printed Z against XY tensile)[4]
Thermal Properties
HDT at 0.45 MPa°C93 (Prusament) to 103 (PolyLite), ISO 75 at 0.45 MPa; Bambu Lab 100[2][6][5]68 (Prusament) to 78 (PolyLite), ISO 75 at 0.45 MPa[3][4][8]
HDT at 1.8 MPa°C86 (Prusament) to 100 (PolyLite), ISO 75 at 1.8 MPa; Bambu Lab 92[2][6][5]65 (Polymaker) to 75 (PolyLite), ISO 75 at 1.8 MPa; Prusament 68[3][4][8]
Glass transition (Tg)°C98 (PolyLite, DSC)[6]71–81 (DSC)[4][7][8]
Melting point / Vicat°CAmorphous — no melting point; Vicat 105 (PolyLite, ISO 306)[6]Amorphous — no melting point; Vicat 75–84 (ISO 306)[4][7][8]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[39]61–66 — loaded bars begin to move at this temperature across six grades from four brands; Prusa publishes 68 for Prusament PETG[34][35][36][26][40]
Thermal expansion (CTE)µm/m·K69 ± 17 in XY and 115 ± 24 in the build direction (printed, TMA, 40–70 °C)[41]65 at 30 °C (neat PETG, large-format printed bead, TMA)[42]
Flammability / UL 94Flammable; no UL 94 rating published for standard ASA[5]Flammable; no UL 94 rating published for standard PETG, though flame-retardant V0 grades exist[43][32]
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 %[23]Moderate — a season or two[3]
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[23]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[6]Withstands acids, alkalis, oils and UV exposure — Polymaker names outdoor use as a result[32]
Water / humidity resistance in service1–5Good — minor absorption[5]Good — minor absorption[3]
Food contactNot food safe[1]PET is the polymer of drinks bottles, but printed layer grooves harbour bacteria and no filament here carries a food-contact certification[32]
Biodegradability / compostabilityNot biodegradable[1]Not biodegradable[32]
RecyclabilityNot accepted in household plastic collection[1]PET is widely recycled as bottle stock, but printed PETG waste is not accepted in household collection[32]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[44][24]Moderate — measurable VOCs and UFPs, ventilation advised[44]
VOC emission rateµg/min12–113 styrene, the range measured across the styrenic filaments tested; ASA itself was not among them[44]Not documented
Ultrafine-particle emission rateparticles/min2 × 10¹⁰ to 9 × 10¹⁰ median for ABS, the closest styrenic tested; ASA itself was not measured[44]≈5 × 10⁹ median for the PET-based T-Glase filament in the same chamber study, against ≈1 × 10⁸ for PLA[44]
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[24][44]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[44][24]Open a window / occasional ventilation[44]
Post-Processing
Sanding & machiningSands well and takes filler before painting[1]Sands poorly — the material is tough and gums rather than powders[29]
Painting & finishingNot documentedPaint adheres poorly without abrasion and a primer[3]
Gluing & solvent weldingSolvent-welds with acetone[6]Cyanoacrylate; no common solvent welds PETG cleanly[29]
Vapour / chemical smoothingAcetone vapour smoothing works — ASA dissolves in acetone[6]No practical vapour smoothing[3]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a dedicated Support for ABS that also serves ASA[24]Prints its own supports; Polymaker rates PolyDissolve S1 for PETG[29]
Dimensional accuracy & detailWarping and cooling-stress cracking are the accuracy limits; Stratasys notes the matte finish as a deliberate aesthetic advantage[24][23]Stringing and blobbing are the usual accuracy limits, not shrinkage[3][8]
Solvents & Solubility
Soluble inAcetone dissolves it (Polymaker); MEK, THF, ethyl acetate and the chlorinated solvents dissolve the styrenic backbone.[45][6]No common workshop solvent; 1,2-dichloroethane destroys it inside a week and dichloromethane — a carcinogen — dissolves the surface.[46][47]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[48]Acetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[46]
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.[47]Dichloromethane brushed on is the only agent that smooths PETG — a controlled carcinogen, not workshop stock.[47]

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. Prusament PETG Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  4. PolyLite PETG Technical Data Sheet Polymaker Wiki · 2026-08 · tds
  5. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  6. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  7. PolyMax PETG Technical Data Sheet Polymaker Wiki · 2026-08 · tds
  8. Polymaker PETG Technical Data Sheet Polymaker Wiki · 2026-08 · tds
  9. ASA — product page Bambu Lab US Store · 2026-08 · vendor
  10. Polymaker product catalogue Polymaker · 2026-08 · vendor
  11. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  12. PETG Basic — product page Bambu Lab US Store · 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. Black PETG Filament 1.75 mm 1 kg — product data Hatchbox · 2026-08 · vendor
  20. IEMAI PETG 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  21. CHCKX PETG 3D Printer Filament 1.75 mm 1 kg, Black CHCKX (Amazon US) · 2026-08 · vendor
  22. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  23. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  24. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  25. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  26. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  27. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  28. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  29. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  30. Bambu Filament Technical Data Sheet — PETG HF Bambu Lab · 2026-08 · tds
  31. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  32. PETG — material basics Polymaker Wiki · 2026-08 · doc
  33. ApolloX Technical Data Sheet Formfutura · 2026-08 · tds
  34. PCTG vs PETG comparison — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  35. Extrudr PETG vs PCTG vs XPETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  36. Prusament PETG-CF vs PETG V0 vs PETG — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  37. 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
  38. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  39. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  40. Prusament PETG — material page Prusa Polymers · 2026-08 · doc
  41. Basalt Fiber Composites with Reduced Thermal Expansion for Additive Manufacturing Polymers 14(15):3216 · 2022-08 · paper
  42. Effects of Fiber Orientation on the Coefficient of Thermal Expansion of Fiber-Filled Polymer Systems in Large Format Polymer Extrusion-Based Additive Manufacturing Materials 15(8):2764 · 2022-04 · paper
  43. Prusament PETG V0 Technical Datasheet Prusa Polymers · 2026-08 · tds
  44. 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
  45. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  46. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  47. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  48. HIPS — Knowledge Base Prusa Research · 2026-08 · doc