3D Printing Info

Filament comparison

ASA-GF vs PETG-ESD

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

Glass-fibre ASA (ASA-GF) guideESD-safe PETG guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-GF comparisonsMore PETG-ESD comparisons
ASA-GF vs PETG-ESD — documented properties and sources
PropertyGlass-fibre ASA (ASA-GF)ASAESD-safe PETGPETG
Market snapshot
Listing priceUSD/kg; dated snapshots$29.95/kg median; $26.99–$33.99/kg across 3 dated product listings$102.99/kg median; $65.98–$140.00/kg across 2 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]PETG compounded with a conductive filler to bring surface resistivity into the static-dissipative range[3][4]
Densityg/cm³1.07 (ZYLtech) and 1.11 (Spectrum), ISO 1183[1][2]1.24 (Fiberon) and 1.28 (3DXTech), ISO 1183[3][4]
Typical priceUSD/kg1 kg spools cluster near 28[5][6]1 kg-equivalent spools span 66–140; the middle of the market is about 103[7][8]
Price range across brandsUSD/kg27–34 across brands; Ambrosia 27, ZYLtech 30, Siraya Tech 34[5][6][9]66–140 across brands; Fiberon PETG-ESD 66, 3DXSTAT ESD-PETG 140[7][8]
Market availability1–5Niche, a handful of specialist brands[5][1][2]Niche, a handful of specialist brands[7][8]
Spool sizes & diameters1.75 and 2.85 mm; 1 kg spools[2][5]1.75 mm; 0.5, 0.75, 1 and 3 kg spools[7][8]
Typical applicationsOutdoor brackets and mounts that need stiffness and dimensional stability under sun and moisture[1][2]Electronics fixtures, trays and jigs handled around static-sensitive components[3][4]
Diameter tolerance± mm±0.01 at 95 % probability and ±0.02 at 100 % (ZYLtech)[2]Not documented
Printing Parameters
Nozzle temperature°C240–270 (Spectrum); 240–280 (ZYLtech)[1][2]250–290 (Fiberon)[3]
Bed temperature°C80–100 (Spectrum); 90–110 on PEI (ZYLtech)[1][2]70–80 (Fiberon); 70 (3DXTech)[3][4]
Enclosure / chamber requirement1–5Enclosure recommended[10]Open frame is fine — Fiberon specifies room-temperature chamber[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[11][12]Textured PEI, satin or powder-coated sheets; on smooth PEI a glue stick acts as a release agent[13][14]
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][15]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][15]
Warping tendency1–5Moderate — needs adhesion aid or draught shield[10]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[11]Needs the right surface or a thin adhesive — the problem is releasing the part, not sticking it[13][14]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[11]Moderate — retraction tuning needed; Polymaker names stringing as PETG's common quirk[14]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; ZYLtech requires a hardened nozzle of 0.6 mm or larger[2][1]Intermediate — dry filament and a tuned profile; resistivity depends on getting the nozzle temperature right[3]
Extruder requirementZYLtech specifies a hardened nozzle 0.6 mm or larger; Spectrum bases its settings on a 0.5 mm nozzle[2][1]Not documented
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required — Spectrum recommends ruby or hardened, ZYLtech requires hardened[1][2]Hardened steel required[3]
Abrasiveness1–5Highly abrasive — standard GF composite[1][2]Moderately abrasive — conductive carbon filler[3]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[16]Low — 3DXTech lists no special nozzle concerns and no minimum layer height for its ESD-PETG, only a 65 °C pre-dry[17]
Heat-creep / jam sensitivity1–5Slightly sensitive[12]Slightly sensitive[18]
Hotend requirementNo special hotend required[12]No special hot-end required[18]
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[19][20][21]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[13][17]
Equilibrium moisture content at ~50 % RH%Not documented0.41 equilibrium water absorption (Fiberon PETG-ESD)[3]
Drying temperature & timeNot documented65 °C for 3 h (Fiberon)[3]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[22]Bubbling and popping at the nozzle, stringing and a rough surface[22]
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[22]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[22]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[22]Sealed with desiccant; Polymaker groups PETG with the highly hygroscopic materials[22][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]36.1 ± 0.9 printed XY, ISO 527 (Fiberon); 3DXTech quotes 50 at break[3][4]
Young's modulusMPa2540–2890 (ZYLtech; specimen type not stated) and 2550 (Spectrum, injection-moulded), ISO 527[2][1]1983 ± 75 printed XY, ISO 527 (Fiberon)[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]7.3 ± 0.7 printed XY, ISO 527 (Fiberon); 3DXTech quotes 13 at break[3][4]
Flexural strengthMPaNot documented54.0 ± 2.5 printed XY, ISO 178 (Fiberon)[3]
Flexural modulusMPa2130–2480 flexural modulus, ISO 178 (ZYLtech; specimen type not stated)[2]1651 ± 141 printed XY, ISO 178 (Fiberon)[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]5.7 ± 0.5 printed XY, ISO 179, notched (Fiberon)[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]Charpy unnotched 29.3 ± 2.2 printed XY (Fiberon, ISO 179)[3]
Layer adhesion / Z tensileMPaNot documented20.7 ± 0.6 printed Z, ISO 527 (Fiberon)[3]
Brittleness1–5Brittle — snaps with little warning; elongation at break 3.4 %[2]Moderate[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][20][19]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[23][24][25][26]
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][20][19]Moderate — no ESD-grade S-N curve; unfilled printed PETG ran 79 000–193 000 cycles at 30 % of tensile strength[27]
Elasticity / flexibility1–5Rigid[2]Slightly flexible in thin sections[3]
Z strength as % of XY%Not documented57 (Fiberon, printed Z against XY tensile)[3]
Thermal Properties
HDT at 0.45 MPa°C100 (Spectrum, injection-moulded, ISO 75 at 0.45 MPa)[1]76 (ISO 75, 0.45 MPa, Fiberon)[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]72 (ISO 75, 1.8 MPa, Fiberon)[3]
Glass transition (Tg)°CNot documented77 (Fiberon) and 80 (3DXTech), DSC[3][4]
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]Amorphous — no melting point; Vicat 86 (Fiberon, ISO 306)[3]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[28]Not documented
Flammability / UL 94Flammable; no UL 94 rating published[19]Flammable; no UL 94 rating published for standard grades[29]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; Spectrum states the parts resist prolonged UV and moisture exposure[1][30]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[20]Withstands acids, alkalis, oils and UV exposure[14]
Food contactNot food safe[11]Not certified for food contact as filament[14]
Biodegradability / compostabilityNot biodegradable[11]Not biodegradable[14]
RecyclabilityNot accepted in household plastic collection[11]Not accepted in household plastic collection[14]
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[31][10]Moderate — measurable VOCs and UFPs, ventilation advised[31]
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[10][31]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[31][10]Open a window / occasional ventilation[31]
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust[1]Conductive carbon filler is bound in the matrix; avoid inhaling sanding dust[3]
Post-Processing
Sanding & machiningSands well and takes filler before painting[11]Sands poorly — the material is tough and gums rather than powders[18]
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[11]Not documented
Gluing & solvent weldingSolvent-welds with acetone[20]Cyanoacrylate; no common solvent welds PETG cleanly[18]
Vapour / chemical smoothingAcetone vapour smoothing works[20]No practical vapour smoothing[18]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[10]Prints its own supports; Polymaker rates PolyDissolve S1 for PETG[18]
Dimensional accuracy & detailNot documentedNozzle temperature has to be held steady — it moves surface resistivity by three orders of magnitude[3]
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone.[32][20]No common workshop solvent; 1,2-dichloroethane destroys it inside a week and dichloromethane — a carcinogen — dissolves the surface.[33][34]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[35]Acetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[33]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[34][20]Dichloromethane brushed on is the only agent that smooths PETG — a controlled carcinogen, not workshop stock.[34]

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. Fiberon PETG-ESD Technical Data Sheet V1.1 Polymaker · 2026-08 · tds
  4. 3DXSTAT ESD-PETG Technical Data Sheet 3DXTech · 2026-08 · tds
  5. Filastruder product catalogue Filastruder · 2026-08 · vendor
  6. ZYLtech ASA-GF Glass Fiber filament — product page ZYLtech · 2026-08 · vendor
  7. Polymaker product catalogue Polymaker · 2026-08 · vendor
  8. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  9. Siraya Tech Fibreheart ASA-GF Filament product page Siraya Tech · 2026-08 · vendor
  10. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  11. ASA — material basics Polymaker Wiki · 2026-08 · doc
  12. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  13. Prusament PETG Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  14. PETG — material basics Polymaker Wiki · 2026-08 · doc
  15. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  16. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  17. 3DXSTAT ESD-PETG — product page (print recommendations) 3DXTech · 2026-08 · doc
  18. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  19. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  20. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  21. Prusament ASA Technical Datasheet v1.1 Prusa Polymers · 2024-05 · tds
  22. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  23. PCTG vs PETG comparison — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  24. Extrudr PETG vs PCTG vs XPETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  25. Prusament PETG-CF vs PETG V0 vs PETG — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  26. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  27. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  28. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  29. Prusament PETG V0 Technical Datasheet Prusa Polymers · 2026-08 · tds
  30. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  31. 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
  32. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  33. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  34. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  35. HIPS — Knowledge Base Prusa Research · 2026-08 · doc