3D Printing Info

Filament comparison

ASA-GF vs PEKK

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

Glass-fibre ASA (ASA-GF) guidePEKK guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-GF comparisonsMore PEKK comparisons
ASA-GF vs PEKK — documented properties and sources
PropertyGlass-fibre ASA (ASA-GF)ASAPEKKHIGHTEMP
Market snapshot
Listing priceUSD/kg; dated snapshots$29.95/kg median; $26.99–$33.99/kg across 3 dated product listings$525.00/kg median; $332.50–$771.12/kg across 6 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]Polyether ketone ketone, amorphous grade — a polyaryletherketone that stays amorphous, so it does not need PEEK's crystallisation control. Stratasys sells it as Antero 800NA and Antero 840CN03; category numbers below are unfilled unless a carbon grade is named[3][4]
Densityg/cm³1.07 (ZYLtech) and 1.11 (Spectrum), ISO 1183[1][2]1.28 unfilled (ASTM D792, Antero 800NA; 1.31 annealed) and 1.33 for CarbonX PEKK-A CF15 (ISO 1183)[4][3]
Typical priceUSD/kg1 kg spools cluster near 28[5][6]1 kg-equivalent spools cluster near 550[7][8][9]
Price range across brandsUSD/kg27–34 across brands; Ambrosia 27, ZYLtech 30, Siraya Tech 34[5][6][10]333-771 across grades and formats; 3DXTech CarbonX PEKK-A+CF15 333 at 2 kg, 3D4Makers unfilled PEKK-A 485 at 2 kg, IEMAI 3D 500 at 1 kg, Kimya PEKK Carbon 771 at 500 g[7][8][9][11][12]
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 2 kg spools, plus Stratasys canisters[7][8][4]
Typical applicationsOutdoor brackets and mounts that need stiffness and dimensional stability under sun and moisture[1][2]Aerospace interior and structural parts; 3DXTech labels its carbon-filled PEKK-A grade AERO and Stratasys certifies Antero 800NA for outgassing and FST[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]Not documented
Bed temperature°C80–100 (Spectrum); 90–110 on PEI (ZYLtech)[1][2]140 (3DXTech CarbonX PEKK-A CF15)[3]
Enclosure / chamber requirement1–5Enclosure recommended[13]Actively heated chamber required[14][15]
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[16][17]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][18]Not documented
Warping tendency1–5Moderate — needs adhesion aid or draught shield[13]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[16]Not documented
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[16]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[14][15]
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 — the category spans unfilled PEKK, where brass is acceptable, and the carbon-filled aerospace grades that make up most of the market[3][4]
Abrasiveness1–5Highly abrasive — standard GF composite[1][2]Highly abrasive — most PEKK filament sold is carbon-filled; unfilled Antero 800NA and ThermaX PEKK-A are non-abrasive[3][4]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[19]Moderate — needs dry filament and a clean nozzle; 3DXTech lists no special nozzle concerns but a mandatory 120 °C pre-dry before every print[20]
Heat-creep / jam sensitivity1–5Slightly sensitive[17]Not documented
Hotend requirementNo special hotend required[17]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[21][22][23]Not documented
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[20]
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]86.7-90.0 at yield and 73.0 at break (printed XZ, ASTM D638, Antero 800NA on the F900 and Fortus 450mc); 88.8 at break annealed; 126 at break for CarbonX PEKK-A CF15 (printed XY, ISO 527)[4][3]
Young's modulusMPa2540–2890 (ZYLtech; specimen type not stated) and 2550 (Spectrum, injection-moulded), ISO 527[2][1]2640-3870 (printed XZ, ASTM D638, Antero 800NA; upper figure annealed); 9125 for CarbonX PEKK-A CF15 (printed XY, ISO 527)[4][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]6.1 at break (printed XZ, ASTM D638, Antero 800NA); 2.3 in ZX; 3.15 for CarbonX PEKK-A CF15 (ISO 527)[4][3]
Flexural strengthMPaNot documented136 at 5 % strain (printed XZ, ASTM D790, Antero 800NA); 178 for CarbonX PEKK-A CF15 (printed XY, ISO 178)[4][3]
Flexural modulusMPa2130–2480 flexural modulus, ISO 178 (ZYLtech; specimen type not stated)[2]3200 (printed XZ, ASTM D790, Antero 800NA); 8817 for CarbonX PEKK-A CF15 (printed XY, ISO 178)[4][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 notched 41.1 J/m XZ and 33.3 J/m ZX; unnotched 1730 J/m XZ against 203 J/m ZX (printed, ASTM D256/D4812, Antero 800NA)[4]
Layer adhesion / Z tensileMPaNot documented50.1-59.4 at yield (printed ZX, ASTM D638, Antero 800NA); 56.0 for the ESD grade Antero 840CN03[4][25]
Brittleness1–5Brittle — snaps with little warning; elongation at break 3.4 %[2]Moderate unfilled — 6.1 % elongation at break in plane; brittle in the carbon-filled grades at 3.15 %[4][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][22][21]Excellent — holds load for years. Antero 800NA still holds 82 % of its room-temperature ZX tensile strength at 104 °C and 63 % at 132 °C (printed, ASTM D638)[4]
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][22][21]Not documented
Elasticity / flexibility1–5Rigid[2]Rigid[3]
Z strength as % of XY%Not documented56-82 (Antero 800NA and 840CN03 printed on the F900 and Fortus 450mc, ZX against XZ tensile yield and break, ASTM D638)[4][25]
Thermal Properties
HDT at 0.45 MPa°C100 (Spectrum, injection-moulded, ISO 75 at 0.45 MPa)[1]158 (printed XY and ZX, ASTM D648 Method B at 66 psi, Antero 800NA); 285 for CarbonX PEKK-A CF15 (ISO 75 at 0.45 MPa)[4][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]156-157 (printed, ASTM D648 Method B at 264 psi, Antero 800NA); moulded 147[4]
Glass transition (Tg)°CNot documented156 (ASTM D7426, Antero 800NA); 165 for CarbonX PEKK-A CF15 (DSC)[4][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]300 melt point (ASTM D7426 peak heat, Antero 800NA); 305 for CarbonX PEKK-A CF15 (DSC)[4][3]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[26]Not documented
Thermal expansion (CTE)µm/m·KNot documented36.1 in XY and 50.2 in ZX (printed, 40-140 °C, ASTM E831, Antero 800NA); 47.4 and 51.2 for the ESD grade Antero 840CN03[4][25]
Flammability / UL 94Flammable; no UL 94 rating published[21]Not documented
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; Spectrum states the parts resist prolonged UV and moisture exposure[1][27]Good — years with some colour shift. 1000 h of QUV cycling to ASTM G154 left Antero 800NA's yield strength unchanged at 57 MPa and raised stress at break 3.6 %[4]
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[22]Not documented
Food contactNot food safe[16]Not documented
Biodegradability / compostabilityNot biodegradable[16]Not documented
RecyclabilityNot accepted in household plastic collection[16]Not documented
Electrical & ESD propertiesNot documentedUnfilled PEKK is an insulator at above 1.4e14 ohm-cm (ASTM D257); CarbonX PEKK-A CF15 sits above 10^7 ohm/sq, and the Antero 840CN03 ESD grade is specified at 10^4-10^9 ohm-cm[4][3][25]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[28][13]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[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[13][28]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[28][13]Ventilated room or enclosure recommended[28]
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust[1]Carbon fibre is bound in the matrix; sanding dust should not be inhaled[3]
Post-Processing
Sanding & machiningSands well and takes filler before painting[16]Not documented
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[16]Not documented
Gluing & solvent weldingSolvent-welds with acetone[22]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works[22]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[13]Not documented
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone.[29][22]Concentrated sulphuric acid, as for PEEK; no common organic solvent touches a polyaryletherketone.[29][30]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[31]Concentrated sulphuric acid and liquid Freon are the entries Ensinger marks not resistant; acetone, MEK and toluene do nothing.[29]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[32][22]None — no solvent softens a polyaryletherketone.[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. CarbonX Carbon Fiber PEKK-A CF15 Technical Data Sheet v1 3DXTech · 2026-08 · tds
  4. Antero 800NA — FDM Material Data Sheet (PEKK-based) Stratasys · 2025-08 · 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. 3D4Makers product catalogue 3D4Makers · 2026-08 · vendor
  9. Kimya PEKK-A Natural 1.75 mm 500 g igo3d · 2026-08 · vendor
  10. Siraya Tech Fibreheart ASA-GF Filament product page Siraya Tech · 2026-08 · vendor
  11. Kimya PEKK Carbon Grey 1.75 mm 500 g igo3d · 2026-08 · vendor
  12. IEMAI 3D PEKK 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  13. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  14. Prusament PEI 1010 Technical Datasheet v1.0 Prusa Polymers · 2024-09 · tds
  15. Prusament PEI 1010 — material page Prusa Polymers · 2026-08 · doc
  16. ASA — material basics Polymaker Wiki · 2026-08 · doc
  17. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  18. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  19. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  20. THERMAX PEKK-A — product page (print recommendations) 3DXTech · 2026-08 · doc
  21. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  22. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  23. Prusament ASA Technical Datasheet v1.1 Prusa Polymers · 2024-05 · tds
  24. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  25. Antero 840CN03 — FDM Material Data Sheet (PEKK, ESD) Stratasys · 2024-08 · tds
  26. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  27. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · 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. The Effects of Sulfonated Poly(ether ether ketone) Ion Exchange Preparation Conditions on Membrane Properties Yee, Zhang & Ladewig, Membranes 3(3) 182–195 · 2013-07 · paper
  31. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  32. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc