3D Printing Info

Filament comparison

ASA-GF vs PVDF

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

Glass-fibre ASA (ASA-GF) guidePVDF guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-GF comparisonsMore PVDF comparisons
ASA-GF vs PVDF — documented properties and sources
PropertyGlass-fibre ASA (ASA-GF)ASAPVDFENGINEERING
Market snapshot
Listing priceUSD/kg; dated snapshots$29.95/kg median; $26.99–$33.99/kg across 3 dated product listings$250.67/kg median; $250.67–$250.67/kg across 1 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]Polyvinylidene fluoride — a semi-crystalline fluoropolymer[3][4]
Densityg/cm³1.07 (ZYLtech) and 1.11 (Spectrum), ISO 1183[1][2]1.71 (ISO 1183) — the densest unfilled filament in the dataset[3]
Typical priceUSD/kg1 kg spools cluster near 28[5][6]1 kg-equivalent spools cluster near 251[7]
Price range across brandsUSD/kg27–34 across brands; Ambrosia 27, ZYLtech 30, Siraya Tech 34[5][6][8]251 at 3DXTech's 750 g pricing — the most expensive material in the whole dataset[7]
Market availability1–5Niche, a handful of specialist brands[5][1][2]Special order, 1–2 makers worldwide[7][9]
Spool sizes & diameters1.75 and 2.85 mm; 1 kg spools[2][5]1.75 and 2.85 mm; 750 g spools[7]
Typical applicationsOutdoor brackets and mounts that need stiffness and dimensional stability under sun and moisture[1][2]Chemical-plant fittings, semiconductor handling and parts needing outstanding UV and chemical resistance[3]
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]Not documented
Bed temperature°C80–100 (Spectrum); 90–110 on PEI (ZYLtech)[1][2]70–110 (3DXTech FluorX)[3]
Enclosure / chamber requirement1–5Enclosure recommended[10]Enclosure required (passive)[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]Not documented
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][13]Not documented
Warping tendency1–5Moderate — needs adhesion aid or draught shield[10]High — enclosure needed for reliable large parts[3]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[11]Not documented
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[11]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; ZYLtech requires a hardened nozzle of 0.6 mm or larger[2][1]Expert / industrial hardware only[3][4]
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]Brass fine indefinitely for unfilled grades[3]
Abrasiveness1–5Highly abrasive — standard GF composite[1][2]Non-abrasive when unfilled[3]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[14]Low — 3DXTech lists no special nozzle concerns, no minimum layer height and states drying is not required[9]
Heat-creep / jam sensitivity1–5Slightly sensitive[12]Not documented
Hotend requirementNo special hotend required[12]Not documented
Other hardware wearNot documentedHydrogen fluoride released on overheating is extremely corrosive and will attack hotend and enclosure metalwork as well as people[4]
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[15][16][17]Negligible (<0.1 % EMC) — fluoropolymers are essentially non-hygroscopic[3]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[18]Not documented
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[18]Not applicable in practice — 3DXTech states drying is not required for PVDF, so there is no moisture-driven strength loss to measure[9]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[18]Not documented
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]51 at break (printed XY, ISO 527)[3]
Young's modulusMPa2540–2890 (ZYLtech; specimen type not stated) and 2550 (Spectrum, injection-moulded), ISO 527[2][1]2450 (printed XY, ISO 527)[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]25 at break (printed XY, ISO 527)[3]
Flexural strengthMPaNot documented50 (printed XY, ISO 178)[3]
Flexural modulusMPa2130–2480 flexural modulus, ISO 178 (ZYLtech; specimen type not stated)[2]1800 (printed XY, ISO 178)[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]Not documented
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]Izod 133 J/m on extruded PVDF stock, converted from 2.49 ft-lb/in (ASTM D256)[19]
Brittleness1–5Brittle — snaps with little warning; elongation at break 3.4 %[2]Tough — absorbs impact, yields before breaking[3]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documentedRockwell M79 on extruded PVDF stock (ASTM D785)[19]
Creep resistance / sustained load1–5Good — no creep test found; chopped glass fibre lifts modulus to 2540–2890 against 2379–2450 for unfilled ASA[2][16][15]Not documented
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][16][15]Not documented
Elasticity / flexibility1–5Rigid[2]Slightly flexible in thin sections[3]
Thermal Properties
HDT at 0.45 MPa°C100 (Spectrum, injection-moulded, ISO 75 at 0.45 MPa)[1]149 on extruded PVDF stock (ASTM D648 at 66 psi; converted from 300 °F)[19]
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]113 on extruded PVDF stock (ASTM D648 at 264 psi; converted from 235 °F)[19]
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]170 melting (ISO 11357)[3]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[20]149 long term and short term on extruded PVDF stock (converted from 300 °F)[19]
Thermal expansion (CTE)µm/m·KNot documented127.8 (extruded PVDF stock, ASTM D696; source states 7.1e-5 in/in/°F) — the highest thermal expansion of any engineering polymer in this dataset[19]
Flammability / UL 94Flammable; no UL 94 rating published[15]UL 94 V-0 on extruded PVDF stock; Ensinger lists inherent flame resistance[19]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; Spectrum states the parts resist prolonged UV and moisture exposure[1][21]Excellent — designed for permanent outdoor use; Ensinger lists good UV and weather resistance and high gamma radiation resistance for PVDF stock[3][19]
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[16]Outstanding — resistant to most acids, solvents and oxidising agents, which is the reason to use it[3]
Water / humidity resistance in service1–5Not documentedExcellent — essentially unaffected[3]
Food contactNot food safe[11]Not documented
Biodegradability / compostabilityNot biodegradable[11]Not documented
RecyclabilityNot accepted in household plastic collection[11]Not documented
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[22][10]Very high — toxic decomposition products; local exhaust mandatory. Above 315 °C thermal decomposition yields hydrofluoric acid, hydrogen cyanide and carbon monoxide[4]
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][22]Above 315 °C: hydrofluoric acid, hydrogen cyanide, phenols, carbon monoxide, carbon dioxide and dense smoke. HF is extremely corrosive, its skin burns may not be immediately visible or painful, and exposure can be fatal by skin absorption, inhalation or ingestion[4]
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[22][10]Local exhaust to outside / fume hood — the SDS states local exhaust is preferred[4]
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust[1]Molten polymer causes thermal burns and must not be pulled off the skin. If HF is detected during a decomposition event, cut the heat but keep the extraction running, ventilate, and clear non-essential people from the area[4]
Post-Processing
Sanding & machiningSands well and takes filler before painting[11]Not documented
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[11]Not documented
Gluing & solvent weldingSolvent-welds with acetone[16]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works[16]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[10]Not documented
Dimensional accuracy & detailNot documentedThe processing window sits well below the 315 °C decomposition threshold, so nozzle temperature must be controlled rather than raised to chase flow[3][4]
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone.[23][16]THF, MEK, DMF, DMAc, NMP, DMSO and trimethyl phosphate dissolve 5–10 wt% at ambient — Arkema's active solvents, all lab reagents.[24]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[25]Acetone, MIBK, cyclohexanone, butyl acetate and glycol ethers swell it; alkalis above pH 12 attack the homopolymer.[24][26]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[27][16]None for the workshop — the active solvents (NMP, DMAc, DMF) are laboratory reagents used for casting membranes, not joints.[24]

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. FluorX PVDF Technical Data Sheet v3 3DXTech · 2026-08 · tds
  4. FluorX PVDF Safety Data Sheet v1.1 3DXTech · 2026-08 · msds
  5. Filastruder product catalogue Filastruder · 2026-08 · vendor
  6. ZYLtech ASA-GF Glass Fiber filament — product page ZYLtech · 2026-08 · vendor
  7. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  8. Siraya Tech Fibreheart ASA-GF Filament product page Siraya Tech · 2026-08 · vendor
  9. FluorX PVDF — product page 3DXTech · 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. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  14. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  15. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  16. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  17. Prusament ASA Technical Datasheet v1.1 Prusa Polymers · 2024-05 · tds
  18. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  19. TECAFLON PVDF natural — stock shape properties Ensinger · 2026-08 · tds
  20. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  21. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  22. 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
  23. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  24. Kynar PVDF — Design properties: solubility and irradiation (active and latent solvents) Arkema · 2026-08 · tds
  25. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  26. Kynar PVDF resin — chemical and fuel resistance Arkema · 2026-08 · tds
  27. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc