3D Printing Info

Filament comparison

ASA Aero vs PETG-ESD

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

Foaming ASA (ASA Aero) guideESD-safe PETG guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA Aero comparisonsMore PETG-ESD comparisons
ASA Aero vs PETG-ESD — documented properties and sources
PropertyFoaming ASA (ASA Aero)ASAESD-safe PETGPETG
Market snapshot
Listing priceUSD/kg; dated snapshots$49.99/kg median; $49.99–$49.99/kg across 1 dated product listings$102.99/kg median; $65.98–$140.00/kg across 2 dated product listings
Identity & Market
Base polymer / chemistryASA with a heat-activated blowing agent that expands at the nozzle[1][2]PETG compounded with a conductive filler to bring surface resistivity into the static-dissipative range[3][4]
Densityg/cm³0.99 filament (Bambu Lab, ISO 1183); Formfutura's grade reaches 0.33 g/cm³ fully expanded[1][2]1.24 (Fiberon) and 1.28 (3DXTech), ISO 1183[3][4]
Typical priceUSD/kg1 kg spools cluster near 50[5]1 kg-equivalent spools span 66–140; the middle of the market is about 103[6][7]
Price range across brandsUSD/kg50 at Bambu Lab's 1 kg listing[5]66–140 across brands; Fiberon PETG-ESD 66, 3DXSTAT ESD-PETG 140[6][7]
Market availability1–5Niche, a handful of specialist brands[5][2]Niche, a handful of specialist brands[6][7]
Spool sizes & diameters1.75 mm; 1 kg spools[5]1.75 mm; 0.5, 0.75, 1 and 3 kg spools[6][7]
Typical applicationsDrone airframes, RC parts and floating or outdoor applications where mass matters and UV exposure rules out LW-PLA[2]Electronics fixtures, trays and jigs handled around static-sensitive components[3][4]
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]250–290 (Fiberon)[3]
Bed temperature°C80–90 (Bambu Lab); 50–90 (Formfutura)[1][2]70–80 (Fiberon); 70 (3DXTech)[3][4]
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][8]Open frame is fine — Fiberon specifies room-temperature chamber[3]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]Not documented
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[9][10]Textured PEI, satin or powder-coated sheets; on smooth PEI a glue stick acts as a release agent[11][12]
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][13]Fiberon rates the material to 500 mm/s, equivalent to 40 on a 0.4 mm nozzle at 0.2 mm layer — a machine-limited headline rather than a measured melt rate[3][13]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[9]Needs the right surface or a thin adhesive — the problem is releasing the part, not sticking it[11][12]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[9]Moderate — retraction tuning needed; Polymaker names stringing as PETG's common quirk[12]
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]Intermediate — dry filament and a tuned profile; resistivity depends on getting the nozzle temperature right[3]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[8]Hardened steel required[3]
Abrasiveness1–5Non-abrasive[8]Moderately abrasive — conductive carbon filler[3]
Nozzle clog risk1–5Not documentedLow — 3DXTech lists no special nozzle concerns and no minimum layer height for its ESD-PETG, only a 65 °C pre-dry[14]
Heat-creep / jam sensitivity1–5Slightly sensitive[10]Slightly sensitive[15]
Hotend requirementNo special hotend required[10]No special hot-end required[15]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5High — 0.80 % saturated at 25 °C / 55 % RH, nearly double unfilled Bambu Lab ASA[1][16]Moderate (0.3–0.8 %) — the PETG matrix reaches 0.40 % saturated at 25 °C / 55 % RH and 3DXTech specifies a 65 °C, 4 h pre-dry[11][14]
Equilibrium moisture content at ~50 % RH%0.80 saturated at 25 °C / 55 % RH (Bambu Lab)[1]0.41 equilibrium water absorption (Fiberon PETG-ESD)[3]
Drying temperature & time80 °C for 8 h (Bambu Lab)[1]65 °C for 3 h (Fiberon)[3]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[17]Bubbling and popping at the nozzle, stringing and a rough surface[17]
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[17]Polymaker groups PETG with nylon, PVA and TPU as highly hygroscopic; no dry-versus-conditioned strength figures are published for this grade and the loss shows as bubbling and poor layer adhesion[17]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[17]Sealed with desiccant; Polymaker groups PETG with the highly hygroscopic materials[17][12]
Mechanical Properties
Tensile strength (XY)MPa32 ± 4 printed XY, ISO 527 (Bambu Lab)[1]36.1 ± 0.9 printed XY, ISO 527 (Fiberon); 3DXTech quotes 50 at break[3][4]
Young's modulusMPa2010 ± 260 printed XY, ISO 527 (Bambu Lab)[1]1983 ± 75 printed XY, ISO 527 (Fiberon)[3]
Elongation at break%5.1 ± 1.6 printed XY, ISO 527 (Bambu Lab)[1]7.3 ± 0.7 printed XY, ISO 527 (Fiberon); 3DXTech quotes 13 at break[3][4]
Flexural strengthMPa58 ± 6 printed XY, ISO 178 (Bambu Lab)[1]54.0 ± 2.5 printed XY, ISO 178 (Fiberon)[3]
Flexural modulusMPa1510 ± 120 printed XY, ISO 178 (Bambu Lab)[1]1651 ± 141 printed XY, ISO 178 (Fiberon)[3]
Charpy impact, notchedkJ/m²8.2 ± 1.6 printed XY, ISO 179, notched (Bambu Lab)[1]5.7 ± 0.5 printed XY, ISO 179, notched (Fiberon)[3]
Other impact dataCharpy unnotched 32.0 ± 2.5 printed XY (Bambu Lab, ISO 179)[1]Charpy unnotched 29.3 ± 2.2 printed XY (Fiberon, ISO 179)[3]
Layer adhesion / Z tensileMPa21 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 24 against 58 in XY[1]20.7 ± 0.6 printed Z, ISO 527 (Fiberon)[3]
Brittleness1–5Moderate[1]Moderate[3]
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][16]Below average — no ESD-grade creep test; unfilled PETG sagged from 12 to 17.1–20.4 mm over 5 days at 1.25 kg[18][19][20][21]
Fatigue / repeated-flex resistance1–5Moderate — no foamed-grade S-N curve; unfilled printed ASA holds a fatigue limit at 25 % of tensile strength[1][22]Moderate — no ESD-grade S-N curve; unfilled printed PETG ran 79 000–193 000 cycles at 30 % of tensile strength[23]
Elasticity / flexibility1–5Rigid[1]Slightly flexible in thin sections[3]
Z strength as % of XY%66 by tensile, 41 by flexural (printed, Bambu Lab)[1]57 (Fiberon, printed Z against XY tensile)[3]
Thermal Properties
HDT at 0.45 MPa°C85 (ISO 75, 0.45 MPa, Bambu Lab) against 100 for unfilled Bambu Lab ASA[1][16]76 (ISO 75, 0.45 MPa, Fiberon)[3]
HDT at 1.8 MPa°C78 (ISO 75, 1.8 MPa, Bambu Lab) against 92 for unfilled Bambu Lab ASA[1][16]72 (ISO 75, 1.8 MPa, Fiberon)[3]
Glass transition (Tg)°CNot documented77 (Fiberon) and 80 (3DXTech), DSC[3][4]
Melting point / Vicat°CNot documentedAmorphous — no melting point; Vicat 86 (Fiberon, ISO 306)[3]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[24]Not documented
Flammability / UL 94Flammable; no UL 94 rating published[16]Flammable; no UL 94 rating published for standard grades[25]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; Formfutura states the foaming grade retains ApolloX's UV resistance[2][26]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[27]Withstands acids, alkalis, oils and UV exposure[12]
Food contactNot food safe[9]Not certified for food contact as filament[12]
Biodegradability / compostabilityNot biodegradable[9]Not biodegradable[12]
RecyclabilityNot accepted in household plastic collection[9]Not accepted in household plastic collection[12]
Electrical & ESD propertiesNot documentedSurface resistivity falls with nozzle temperature: 7.0×10⁶–1.6×10⁷ ohm at 250 °C, 3.2×10⁵–4.7×10⁵ at 270 °C and below 1×10⁴ at 290 °C (Fiberon); 3DXTech quotes 10⁷–10⁹ ohm/sq[3][4]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[28][8]Moderate — measurable VOCs and UFPs, ventilation advised[28]
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][28]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[28][8]Open a window / occasional ventilation[28]
Dust & fibre handling hazardNot documentedConductive carbon filler is bound in the matrix; avoid inhaling sanding dust[3]
Post-Processing
Sanding & machiningSands well and takes filler before painting[9]Sands poorly — the material is tough and gums rather than powders[15]
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[9]Not documented
Gluing & solvent weldingSolvent-welds with acetone[27]Cyanoacrylate; no common solvent welds PETG cleanly[15]
Vapour / chemical smoothingAcetone vapour smoothing works[27]No practical vapour smoothing[15]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[8]Prints its own supports; Polymaker rates PolyDissolve S1 for PETG[15]
Dimensional accuracy & detailMatte, textured surface that hides layer lines; colour lightens as the foaming degree rises, which doubles as a visual density cue[2]Nozzle temperature has to be held steady — it moves surface resistivity by three orders of magnitude[3]
Solvents & Solubility
Soluble inAcetone dissolves it (Polymaker); MEK, THF, ethyl acetate and the chlorinated solvents dissolve the styrenic backbone.[29][27]No common workshop solvent; 1,2-dichloroethane destroys it inside a week and dichloromethane — a carcinogen — dissolves the surface.[30][31]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[32]Acetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[30]
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]Dichloromethane brushed on is the only agent that smooths PETG — a controlled carcinogen, not workshop stock.[31]

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 PETG-ESD Technical Data Sheet V1.1 Polymaker · 2026-08 · tds
  4. 3DXSTAT ESD-PETG Technical Data Sheet 3DXTech · 2026-08 · tds
  5. ASA Aero — product page Bambu Lab US Store · 2026-08 · vendor
  6. Polymaker product catalogue Polymaker · 2026-08 · vendor
  7. 3DXTech product catalogue 3DXTech · 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. Prusament PETG Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  12. PETG — material basics Polymaker Wiki · 2026-08 · doc
  13. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  14. 3DXSTAT ESD-PETG — product page (print recommendations) 3DXTech · 2026-08 · doc
  15. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  16. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  17. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  18. PCTG vs PETG comparison — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  19. Extrudr PETG vs PCTG vs XPETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  20. Prusament PETG-CF vs PETG V0 vs PETG — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  21. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  22. 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
  23. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  24. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  25. Prusament PETG V0 Technical Datasheet Prusa Polymers · 2026-08 · tds
  26. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  27. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  28. 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
  29. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  30. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  31. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  32. HIPS — Knowledge Base Prusa Research · 2026-08 · doc