3D Printing Info

Filament comparison

ASA-CF vs PA blend

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

Carbon-fibre ASA (ASA-CF) guidePA6/66 copolymer blends guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-CF comparisonsMore PA blend comparisons
ASA-CF vs PA blend — documented properties and sources
PropertyCarbon-fibre ASA (ASA-CF)ASAPA6/66 copolymer blendsPA
Market snapshot
Listing priceUSD/kg; dated snapshots$36.99/kg median; $25.00–$90.00/kg across 5 dated product listings$65.62/kg median; $62.00–$113.33/kg across 4 dated product listings
Identity & Market
Base polymer / chemistryASA reinforced with chopped carbon fibre — Formfutura's ApolloX CF10 is 10 wt%[1][2][3]PA6/66 copolymer — a nylon alloy that lowers the melting point and improves printability against straight PA6[4][5]
Densityg/cm³1.02 (Bambu Lab), 1.1 (Formfutura ApolloX CF10) and 1.11 (3DXTech), ISO 1183[1][2][3]1.12 (ISO 1183, Polymaker CoPA)[4]
Typical priceUSD/kg1 kg spools cluster near 37[6][7]1 kg-equivalent spools cluster near 65[7][8][9]
Price range across brandsUSD/kg25–90 across brands; IEMAI 25, Ambrosia 33, Bambu Lab 37, Polymaker Fiberon 40, 3DXTech 90[10][6][7][11][12]62–113 across brands; add:north Adura 62, PrimaCreator NylonPower PA6/66 65 at 500 g, Polymaker CoPA 67, 3DXTech AmideX Nylon 6-66 113[7][11][8][9]
Market availability1–5Available from several mainstream brands[6][7][11][10]Available from several mainstream brands[7][11]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[7][11][6]1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[7][11][8][9]
Typical applicationsOutdoor structural parts, drone and antenna mounts where stiffness and UV stability both matter[1][2]General-purpose nylon parts and, unusually, CoPA can support itself if the support is removed before it absorbs moisture[4]
Printing Parameters
Nozzle temperature°C250–280 (Bambu Lab)[1]250–270 (Polymaker CoPA)[4]
Bed temperature°C80–100 (Bambu Lab)[1]25–50 (Polymaker CoPA)[4]
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][13]Enclosure required (passive) — Polymaker specifies a chamber at ambient temperature[4]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]Not documented
Part cooling fanFan on (Bambu Lab)[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[14][15]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s20 at Bambu Lab's 250 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[1][16]16 at Polymaker's 200 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[4][16]
Warping tendency1–5Moderate — needs adhesion aid or draught shield; the fibre reduces warping against unfilled ASA[13]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[14]Not documented
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[14]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[13]Advanced — enclosure, hardware upgrades, tuning; must be kept below 20 % RH throughout[4][17]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[13]Brass fine indefinitely for unfilled grades[18]
Abrasiveness1–5Highly abrasive — standard CF composite[13]Non-abrasive when unfilled[18]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for fibre-filled composites and Simplify3D a higher tendency to clog[19][20]Very high — frequent jams without careful setup[21][17]
Heat-creep / jam sensitivity1–5Slightly sensitive[15]Not documented
Hotend requirementNo special hotend required[15]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.33 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Very high (>2 %) — Polymaker's own wet-state specimens reached 6.16 % moisture content after 48 h immersion at 60 °C[4][17]
Equilibrium moisture content at ~50 % RH%0.33 saturated at 25 °C / 55 % RH (Bambu Lab)[1]Not documented
Drying temperature & time80 °C for 8 h (Bambu Lab)[1]100 °C for 8 h (Polymaker CoPA)[4]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[17]Popping and cracking during extrusion, then hard-to-diagnose defects[21]
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]Measured dry against wet on printed specimens at 6.16 % moisture (Polymaker CoPA): tensile 78.0 → 34.3 MPa, Young's modulus 2703 → 724 MPa, flexural strength 109.8 → 22.6 MPa, while notched Charpy rises 6.9 → 27.7 kJ/m² and elongation 12.7 → 13.2 %[4][21]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[17]Polymaker states CoPA must always be stored and used below 20 % relative humidity[4]
Hydrolysis at melt temperatureNot documentedPolymaker requires a 100 °C dry for 8 h and storage below 20 % RH; no molecular-weight loss figure is published, and the published wet data is conditioning rather than melt hydrolysis[4][22]
Mechanical Properties
Tensile strength (XY)MPa34 ± 3 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 48 at break and Formfutura 79 at 23 °C[1][2][3]78.0 ± 0.7 printed XY dry and 34.3 ± 2.5 wet, ISO 527 (Polymaker CoPA)[4]
Young's modulusMPa4200 ± 270 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 5355 and Formfutura 7580[1][2][3]2703 ± 259 printed XY dry and 724 ± 61 wet, ISO 527 (Polymaker CoPA)[4]
Elongation at break%9.6 ± 1.4 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 3 at break and Formfutura 1.8[1][2][3]12.7 ± 2.1 printed XY dry and 13.2 ± 2.3 wet, ISO 527 (Polymaker CoPA)[4]
Flexural strengthMPa72 ± 5 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 78[1][2]109.8 ± 1.3 printed XY dry and 22.6 ± 0.5 wet, ISO 178 (Polymaker CoPA)[4]
Flexural modulusMPa3740 ± 130 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 5210[1][2]2510 ± 25 printed XY dry and 636 ± 11 wet, ISO 178 (Polymaker CoPA)[4]
Charpy impact, notchedkJ/m²6.2 ± 1.4 printed XY, ISO 179, notched (Bambu Lab) — a third of unfilled Bambu Lab ASA's 19.6[1][23]6.9 ± 1.4 printed XY dry and 27.7 ± 1.2 wet, ISO 179 notched (Polymaker CoPA) — impact quadruples when conditioned[4]
Other impact dataCharpy unnotched 14.0 ± 2.2 printed XY (Bambu Lab, ISO 179), against 41.0 for unfilled Bambu Lab ASA[1][23]Not documented
Layer adhesion / Z tensileMPa30 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 33 against 72 in XY[1]45.8 ± 1.5 printed Z dry, falling to 13.7 ± 1.2 wet, ISO 527 (Polymaker CoPA)[4]
Brittleness1–5Brittle — snaps with little warning[1][2]Tough — absorbs impact, yields before breaking[4]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documentedShore D 86 and Rockwell 85 (108) — the source does not name the scales on extruded unfilled PA66 stock (ASTM D2240, D785)[24]
Creep resistance / sustained load1–5Good — no creep test found; chopped carbon fibre lifts modulus to 4200 MPa against 2379–2450 for unfilled ASA[1][25]Not documented
Fatigue / repeated-flex resistance1–5Below average — no CF-grade S-N curve; notched Charpy falls to 6.2 kJ/m² against 19.6 for unfilled Bambu Lab ASA[1][23]Excellent — living hinges viable[18]
Elasticity / flexibility1–5Rigid[1]Semi-flexible[21]
Z strength as % of XY%88 by tensile, 46 by flexural (printed, Bambu Lab)[1]59 dry (45.8 Z against 78.0 XY) and 40 wet, printed[4]
Thermal Properties
HDT at 0.45 MPa°C110 (ISO 75, 0.45 MPa, Bambu Lab) against 100 for unfilled Bambu Lab ASA[1][23]111 (ISO 75, 0.45 MPa, Polymaker CoPA)[4]
HDT at 1.8 MPa°C102 (ISO 75, 1.8 MPa, Bambu Lab) against 92 for unfilled Bambu Lab ASA[1][23]70 (ISO 75, 1.8 MPa, Polymaker CoPA)[4]
Glass transition (Tg)°CNot documented66 (DSC, Polymaker CoPA)[4]
Melting point / Vicat°CNot documented189 melting (DSC); Vicat 180, crystallisation 148, decomposition 370 (Polymaker CoPA)[4]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[26]Not documented
Annealing responseNot documented80 °C for 6 h (Polymaker CoPA)[4]
Thermal expansion (CTE)µm/m·KNot documented81.0 on extruded unfilled PA66 stock (ASTM D696; source states 4.5e-5 in/in/°F) — the same chemistry as a PA6/66 copolymer[24]
Flammability / UL 94Flammable; no UL 94 rating published[23]Not documented
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; the acrylate rubber phase is unchanged by the fibre[27][14]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[25]Not documented
Water / humidity resistance in service1–5Not documentedAbsorbs water, properties shift — 6.16 % uptake cost 56 % of tensile strength and 73 % of modulus[4]
Food contactNot food safe[14]Not documented
Biodegradability / compostabilityNot biodegradable[14]Not documented
RecyclabilityNot accepted in household plastic collection[14]Not documented
Electrical & ESD propertiesSurface resistance above 10⁹ ohm/sq — not static-dissipative (3DXTech, ASTM D257)[2]Not documented
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[28][13]Moderate — measurable VOCs and UFPs, ventilation advised[28]
VOC emission rateµg/minNot documentedUp to 180 caprolactam, the dominant VOC from nylon; total VOC reached nearly 200 µg/min, the highest of the nine filaments tested[28]
Ultrafine-particle emission rateparticles/minNot documented≈2 × 10⁸ median — low for ultrafine particles despite the highest VOC mass of any filament tested[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]Caprolactam, at up to 180 µg/min from nylon filament — the largest single-VOC emission rate measured in the study[28]
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[28][13]Ventilated room or enclosure recommended[28]
Dust & fibre handling hazardCarbon fibre is bound in the matrix; sanding dust should not be inhaled[2]Not documented
Post-Processing
Sanding & machiningSands well and takes filler before painting[14]Not documented
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[14]Not documented
Gluing & solvent weldingSolvent-welds with acetone[25]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works[25]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[13]CoPA can support itself, but Polymaker warns the support bonds permanently if it absorbs moisture before removal[4]
Dimensional accuracy & detailMatte fibre-filled finish hides layer lines[1]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][25]Dissolved at 23 °C by formic acid above ~50 %, phenol, m-cresol, 96 % sulphuric acid or hexafluoroisopropanol — laboratory reagents.[30]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[31]Zinc chloride solutions stress-crack it — 10 % marginal, 37 % not resistant; alcoholic calcium chloride dissolves it.[30]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[32][25]None — nylon's only solvents are formic acid, phenol and HFIP, all of which degrade the part they wet.[30]

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-CF Bambu Lab · 2026-08 · tds
  2. CarbonX Carbon Fiber ASA Technical Data Sheet 3DXTech · 2026-08 · tds
  3. ApolloX CF10 Technical Data Sheet Formfutura · 2026-08 · tds
  4. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  5. AmideX Nylon 6-66 — product page 3DXTech · 2026-08 · vendor
  6. ASA-CF — product page Bambu Lab US Store · 2026-08 · vendor
  7. Polymaker product catalogue Polymaker · 2026-08 · vendor
  8. add:north Adura product page add:north · 2026-08 · vendor
  9. PrimaCreator SELECT NylonPower PA6/66 product page PrimaCreator · 2026-08 · vendor
  10. Filastruder product catalogue Filastruder · 2026-08 · vendor
  11. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  12. IEMAI CF-ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  13. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  14. ASA — material basics Polymaker Wiki · 2026-08 · doc
  15. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  16. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  17. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  18. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  19. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  20. Carbon Fiber Filled — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  21. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  22. PolyMide CoPA — Technical Data Sheet page Polymaker Wiki · 2026-08 · tds
  23. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  24. TECAMID 66 natural (PA66) — stock shape properties Ensinger · 2026-08 · tds
  25. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · 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. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  31. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  32. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc