3D Printing Info

Filament comparison

ASA-GF vs PPSU

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

Glass-fibre ASA (ASA-GF) guidePPSU guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-GF comparisonsMore PPSU comparisons
ASA-GF vs PPSU — documented properties and sources
PropertyGlass-fibre ASA (ASA-GF)ASAPPSUHIGHTEMP
Market snapshot
Listing priceUSD/kg; dated snapshots$29.95/kg median; $26.99–$33.99/kg across 3 dated product listings$337.40/kg median; $223.00–$732.56/kg across 4 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]Polyphenylsulfone — an amorphous high-temperature sulfone polymer[3]
Densityg/cm³1.07 (ZYLtech) and 1.11 (Spectrum), ISO 1183[1][2]1.28 (ISO 1183, 3DXTech; ASTM D792, Stratasys PPSF)[3][4]
Typical priceUSD/kg1 kg spools cluster near 28[5][6]1 kg-equivalent spools span 223–733; the middle of the market is about 425[7][8][9][10]
Price range across brandsUSD/kg27–34 across brands; Ambrosia 27, ZYLtech 30, Siraya Tech 34[5][6][11]223-733 across brands; IEMAI 3D 223 at 1 kg, 3DXTech ThermaX PPSU 250 at 500 g, 3D4Makers 425 at 750 g, Kimya PPSU-S 733 at 500 g[7][8][9][10]
Market availability1–5Niche, a handful of specialist brands[5][1][2]Niche, a handful of specialist brands[7][8][9]
Spool sizes & diameters1.75 and 2.85 mm; 1 kg spools[2][5]1.75 and 2.85 mm; 200 g to 750 g spools[7][8][9]
Typical applicationsOutdoor brackets and mounts that need stiffness and dimensional stability under sun and moisture[1][2]Steam-sterilisable medical and dental tooling, and aircraft interior parts[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]130–150 (3DXTech)[3]
Enclosure / chamber requirement1–5Enclosure recommended[12]Actively heated chamber required[13][14]
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[15][16]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][17]Not documented
Warping tendency1–5Moderate — needs adhesion aid or draught shield[12]Severe — heated chamber needed[13]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[15]Not documented
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[15]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[13][14]
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, but brass softens near these nozzle temperatures — hardened or plated hot ends are the norm[13]
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[18]Moderate — needs dry filament and a clean nozzle; 3DXTech lists no special nozzle concerns but a mandatory 120 °C pre-dry before every print[19]
Heat-creep / jam sensitivity1–5Slightly sensitive[16]Not documented
Hotend requirementNo special hotend required[16]Not documented
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[20][21][22]Not documented
Equilibrium moisture content at ~50 % RH%Not documented0.37 in 24 h and 1.1 at saturation on extruded stock (ASTM D570)[23]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[24]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[24]No dry-versus-conditioned figures are published; 3DXTech mandates a 120 °C, 4 h pre-dry before every print because trapped water flashes to steam at these nozzle temperatures[19]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[24]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]55 (printed XY, ISO 527, 3DXTech) and 55 (printed on side long edge, ASTM D638, Stratasys PPSF); 79 at yield on extruded stock[3][4][23]
Young's modulusMPa2540–2890 (ZYLtech; specimen type not stated) and 2550 (Spectrum, injection-moulded), ISO 527[2][1]2100 (printed, ASTM D638, Stratasys PPSF) and 2310 (printed XY, ISO 527, 3DXTech); 2344 on extruded stock[3][4][23]
Elongation at break%3.4 at break (ZYLtech; specimen type not stated); Spectrum quotes 2.80 at yield on injection-moulded specimens[2][1]3 (printed, ISO 527 and ASTM D638) against 60 on extruded stock — printing costs PPSU almost all of its ductility[3][4][23]
Flexural strengthMPaNot documented110 (printed, ISO 178 and ASTM D790, 3DXTech and Stratasys PPSF agree); 91 on extruded stock[3][4][23]
Flexural modulusMPa2130–2480 flexural modulus, ISO 178 (ZYLtech; specimen type not stated)[2]2200 (printed, ASTM D790, Stratasys PPSF) and 2215 (printed XY, ISO 178, 3DXTech)[3][4]
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 notched 58.7 J/m and unnotched 165.5 J/m (printed, ASTM D256 Method A, Stratasys PPSF); 160 J/m notched on extruded stock[4][23]
Brittleness1–5Brittle — snaps with little warning; elongation at break 3.4 %[2]Brittle — snaps with little warning[3]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documentedRockwell M86 on printed PPSF (ASTM D785, Stratasys); M96 on extruded PPSU stock (and an unlabelled 123)[4][23]
Creep resistance / sustained load1–5Good — no creep test found; chopped glass fibre lifts modulus to 2540–2890 against 2379–2450 for unfilled ASA[2][21][20]Good. Printed PPSF holds 189 °C heat deflection at 1.8 MPa (ASTM D648) and extruded stock is rated 149 °C long-term service, but Ensinger does not claim the creep resistance it claims for PSU and PPS[4][23]
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][21][20]Not documented
Elasticity / flexibility1–5Rigid[2]Rigid[3]
Thermal Properties
HDT at 0.45 MPa°C100 (Spectrum, injection-moulded, ISO 75 at 0.45 MPa)[1]190 (printed XY, ISO 75 at 0.45 MPa, 3DXTech)[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]189 (printed, ASTM D648 at 264 psi, Stratasys PPSF); 207 on extruded stock, converted from 405 °F[4][23]
Glass transition (Tg)°CNot documented230 (DSC) — the highest glass transition in the dataset[3]
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]Not documented
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[25]149 long-term service on extruded PPSU stock, converted from 300 °F[23]
Thermal expansion (CTE)µm/m·KNot documented55.0 (printed PPSF, ASTM D696; source states 5.5e-5 mm/mm/°C) and 55.8 on extruded stock (ASTM D696, from 3.1e-5 in/in/°F)[4][23]
Flammability / UL 94Flammable; no UL 94 rating published[20]UL 94 V-0 at 1.5 mm, rated on the base resin[3]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; Spectrum states the parts resist prolonged UV and moisture exposure[1][26]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[21]Withstands repeated steam autoclaving, the usual reason to choose PPSU over PSU; Stratasys also lists PPSF as passing 24 h stress-crack exposure to antifreeze, petrol, motor oil, power-steering, transmission and washer fluid at 23 °C and 100 °C[3][4]
Food contactNot food safe[15]Not documented
Biodegradability / compostabilityNot biodegradable[15]Not documented
RecyclabilityNot accepted in household plastic collection[15]Not documented
Electrical & ESD propertiesNot documentedVolume resistivity 5e13 to 1.5e14 ohm-cm and dielectric strength 80-290 V/mil on printed PPSF (ASTM D257, D149)[4]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[27][12]Moderate — measurable VOCs and UFPs, ventilation advised. None of these polymers was in the chamber study, and all are processed far above the temperatures it covered[27]
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[12][27]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[27][12]Ventilated room or enclosure recommended[27]
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust[1]Not documented
Post-Processing
Sanding & machiningSands well and takes filler before painting[15]Not documented
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[15]Not documented
Gluing & solvent weldingSolvent-welds with acetone[21]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works[21]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[12]Not documented
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone.[28][21]Dichloromethane dissolves it at 23 °C at every stress level; acetone solvates and softens unstressed PPSU (Solvay ESCR).[29]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[30]MEK ruptures stressed parts and toluene crazes them above 13.8 MPa; glass-filled grades survive where unfilled craze.[29]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[31][21]Dichloromethane cements PPSU and NMP softens residual resin; both are laboratory reagents, not workshop stock.[29]

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. ThermaX PPSU Technical Data Sheet v3 3DXTech · 2026-08 · tds
  4. PPSF (polyphenylsulfone) — FDM Data Sheet Stratasys · 2018-06 · tds
  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. Kimya PPSU-S Natural 1.75 mm 500 g igo3d · 2026-08 · vendor
  9. 3D4Makers product catalogue 3D4Makers · 2026-08 · vendor
  10. IEMAI 3D PPSU 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  11. Siraya Tech Fibreheart ASA-GF Filament product page Siraya Tech · 2026-08 · vendor
  12. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  13. Prusament PEI 1010 Technical Datasheet v1.0 Prusa Polymers · 2024-09 · tds
  14. Prusament PEI 1010 — material page Prusa Polymers · 2026-08 · doc
  15. ASA — material basics Polymaker Wiki · 2026-08 · doc
  16. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  17. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  18. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  19. THERMAX PPSU — product page (print recommendations) 3DXTech · 2026-08 · doc
  20. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  21. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  22. Prusament ASA Technical Datasheet v1.1 Prusa Polymers · 2024-05 · tds
  23. TECASON P black (PPSU) — stock shape properties Ensinger · 2026-08 · tds
  24. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  25. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  26. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  27. 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
  28. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  29. Radel PPSU, Veradel PESU, Acudel modified PPSU Design Guide — environmental stress cracking tables Solvay Specialty Polymers · 2026-08 · tds
  30. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  31. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc