3D Printing Info

Filament comparison

ASA vs PAHT-CF

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

ASA guideHigh-temperature CF nylon (PAHT-CF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA comparisonsMore PAHT-CF comparisons
ASA vs PAHT-CF — documented properties and sources
PropertyASAASAHigh-temperature CF nylon (PAHT-CF)PA
Market snapshot
Listing priceUSD/kg; dated snapshots$28.98/kg median; $17.99–$50.00/kg across 14 dated product listings$59.98/kg median; $49.99–$69.98/kg across 2 dated product listings
Identity & Market
Base polymer / chemistryAcrylonitrile styrene acrylate — ABS with the butadiene rubber phase replaced by an acrylate rubber that has no UV-vulnerable double bonds[1][2]High-temperature carbon-fibre nylon. Bambu Lab's PAHT-CF and Polymaker's PA612-CF15 both use a long-chain polyamide matrix for lower moisture uptake than PA6[3][4]
Densityg/cm³1.05 (Bambu Lab) to 1.13 (PolyLite ASA), ISO 1183; Prusament 1.07[5][6][2]1.03 (Polymaker PA612-CF15) and 1.06 (Bambu Lab), ISO 1183[3][4]
Typical priceUSD/kg1 kg spools cluster near 30[7][8][9]1 kg-equivalent spools cluster near 60[3][8]
Price range across brandsUSD/kg18–50 across brands; IEMAI 18, SUNLU 18, Ambrosia 23, Polymaker 26, Bambu Lab 30, YXPOLYER 30, Prusament 41, 3DXTech 50[10][8][7][11][9][12][13][14][15]50–70 across brands; Bambu Lab 50, Polymaker Fiberon PA612-CF15 70[3][8]
Market availability1–5Stocked by most mainstream brands[7][8][12][9]Available from several mainstream brands[3][8]
Spool sizes & diameters1.75 and 2.85 mm; 0.8, 1, 4 and 10 kg spools[12][9][7]1.75 mm; 0.5 and 1 kg spools[8][3]
Typical applicationsOutdoor fittings, signage, automotive exterior trim and anything that has to hold colour and strength in sunlight[16][1]Under-bonnet and near-motor parts needing 170 °C-plus heat deflection with less humidity drift than PA6[3][4]
Diameter tolerance± mm±0.04 (Prusament)[2]Not documented
Printing Parameters
Nozzle temperature°C230–270 across brands; Prusament 260 ± 10, Bambu Lab 240–270, PolyLite 230–260[5][6][2]260–290 (Bambu Lab)[3]
Bed temperature°C75–110; Prusament 110 ± 5, Bambu Lab 80–100, PolyLite 75–95[5][6][2]Not documented
Enclosure / chamber requirement1–5Enclosure recommended — Polymaker calls a chamber needed at ambient temperature, Bambu Lab requires an enclosed printer and rules out its P1P and A-series machines[6][17]Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber[3]
Recommended chamber temperature°C45–60 (Bambu Lab)[5]45–60 (Bambu Lab)[3]
Part cooling fanLow — Prusament 30 % within a 0–50 % range, Bambu Lab 0–80 %, PolyLite off[2][5][6]Not documented
Bed surface & adhesion aidSatin, smooth PEI or powder-coated sheet with a glue stick; Prusa advises a 3 mm or taller brim on large parts[2][17]PEI sheet with a glue stick, or a dedicated adhesive such as Magigoo[18][19]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s10–16 (PrusaSlicer guidance for ABS/ASA)[20]8 at Bambu Lab's 100 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[3][20]
Warping tendency1–5High — enclosure needed for reliable large parts; Prusa recommends a tall brim and Bambu Lab attributes cracking to cooling stress exceeding interlayer adhesion[2][17]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[2][17]Needs a specific surface plus adhesive[18]
Stringing / oozing tendency1–5Slight[6]Moderate — retraction tuning needed[19]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile[17][2]Expert / industrial hardware only[3][21]
Extruder requirementNot documented0.6 mm nozzle recommended by Bambu Lab; 0.4 and 0.8 also supported[3]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[17]Hardened steel required — Polymaker measures brass nozzle life at about 9 h on PA612-CF15 and recommends hardened steel or ruby[4]
Abrasiveness1–5Non-abrasive[17]Highly abrasive — standard CF composite; Polymaker puts brass nozzle life at roughly 9 h on PA612-CF15[4]
Nozzle clog risk1–5Low — no special hot-end required and clogging is not among the listed drawbacks; Prusa lists no drybox and no hardened nozzle[22][23]High — jams from moisture, heat creep or particles[21]
Heat-creep / jam sensitivity1–5Slightly sensitive[22]Moderate — good heatbreak cooling needed[18]
Hotend requirementNo special hot-end required[22]May require an all-metal hot end (Simplify3D)[18]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.45 % saturated at 25 °C / 55 % RH (Bambu Lab) and 0.40 % equilibrium (Polymaker); Prusa measures only 0.17 % after 7 days at 22 % RH[5][6][2]High (0.8–2 %) — 0.88 % saturated at 25 °C / 55 % RH for Bambu Lab PAHT-CF, a third of its PA6-CF; Polymaker's PA612-CF15 reaches 2.2 % equilibrium[3][4][24]
Equilibrium moisture content at ~50 % RH%0.45 saturated at 25 °C / 55 % RH (Bambu Lab); 0.40 equilibrium (Polymaker); 0.17 after 7 days at 24 °C / 22 % RH (Prusa)[5][6][2]0.88 saturated at 25 °C / 55 % RH (Bambu Lab PAHT-CF); 2.2 equilibrium (Polymaker PA612-CF15)[3][4]
Drying temperature & time80 °C for 8 h (Bambu Lab); 70 °C for 7 h (Polymaker)[5][6]80 °C for 8–12 h (Bambu Lab)[3]
Symptoms when wetBubbling and popping at the nozzle, stringing, rough surface and weak layers[21]Not documented
Effect of moisture on strengthNo dry-versus-conditioned figures are published for ASA; Polymaker groups the styrenics as moderate-sensitivity and the loss shows as poor layer adhesion rather than a stated strength delta[21]Polymaker publishes dry and wet printed blocks for PA612-CF15 itself: at 2.57 % moisture tensile falls only 91.9 → 83.1 MPa and modulus 5137 → 3991 MPa — the PA612 backbone absorbs far less than PA6[4][25]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[21]Sealed below 20 % RH with desiccant[21]
Hydrolysis at melt temperatureNot documentedPolymaker specifies an 80–100 °C dry and storage below 20 % RH; no molecular-weight loss figure is published, and the wet data it does publish is conditioning rather than melt hydrolysis[26][27]
Mechanical Properties
Tensile strength (XY)MPa37 ± 3 (Bambu Lab) to 43.8 (PolyLite) printed XY, ISO 527; Prusament 42 ± 1 at yield; Formfutura quotes 47.5 at yield[5][6][2][28]92 ± 7 (Bambu Lab) and 91.9 ± 2.0 (Polymaker PA612-CF15, dry/annealed) printed XY, ISO 527; the Polymaker grade only falls to 83.1 ± 2.2 conditioned to 2.57 % moisture[3][4]
Young's modulusMPa2379 (PolyLite) to 2450 (Bambu Lab) printed XY, ISO 527; Prusament 1600, Formfutura 2020[5][6][2][28]3860 ± 230 (Bambu Lab) and 5137 ± 192 (Polymaker PA612-CF15, dry) printed XY, ISO 527; Polymaker 3991 ± 137 conditioned[3][4]
Elongation at break%6.7 (PolyLite) to 9.2 (Bambu Lab) at break, printed XY, ISO 527; Formfutura quotes 15 at break, Prusament 3.4 at yield[5][6][28][2]2.6 ± 0.2 dry (Polymaker PA612-CF15) to 8.4 ± 1.8 (Bambu Lab) printed XY, ISO 527; Polymaker 4.1 ± 0.3 conditioned[3][4]
Flexural strengthMPa64 ± 1 printed horizontal (Prusament, ISO 178); Bambu Lab 65 ± 5, PolyLite 73.4[2][5][6]Not documented
Flexural modulusMPa1920 ± 130 (Bambu Lab) to 3206 (PolyLite) printed XY, ISO 178; Prusament 2000[5][6][2]4230 ± 210 printed XY, ISO 178 (Bambu Lab)[3]
Charpy impact, notchedkJ/m²10.3 (PolyLite) to 19.6 (Bambu Lab) printed XY, ISO 179, notched; Prusament 12 ± 1, Formfutura 18[6][5][2][28]8.1 ± 0.8 printed XY dry and 7.7 ± 0.5 conditioned, ISO 179 notched (Polymaker PA612-CF15)[4]
Other impact dataCharpy unnotched 25 ± 3 printed horizontal and 38 ± 11 printed vertical (Prusament, ISO 179-1); Bambu Lab 41.0 ± 2.3 printed XY[2][5]Charpy unnotched 57.5 ± 3.4 and notched 22.8 ± 1.8 printed XY (Bambu Lab, ISO 179)[3]
Layer adhesion / Z tensileMPa11 ± 1 (Prusa interlayer adhesion test); 31 ± 4 (Bambu Lab) and 32 (PolyLite) printed Z tensile, ISO 527[2][5][6]47 ± 5 (Bambu Lab) and 48.3 ± 3.9 (Polymaker PA612-CF15, dry) printed Z, ISO 527; Polymaker 35.6 ± 3.0 conditioned[3][4]
Brittleness1–5Tough — absorbs impact, yields before breaking[5][2]Moderate[3]
Hardness (scale-specific)Shore A / Shore D / Rockwell78 Shore D (Prusa Polymers method)[2]Rockwell M88 / R117 on extruded PA66-GF30 stock (ASTM D785); no figure is published for a carbon-fibre long-chain nylon filament[29]
Creep resistance / sustained load1–5Moderate — no printed-ASA creep test found; Tg of 98 °C keeps room-temperature service far below softening, unlike PLA[6][2]Good. Ensinger rates its PA66-CF30 compound for sustained static and dynamic load with 110 °C continuous service; the long-chain PA612 matrix takes up 0.88 % at saturation, a third of the same maker's PA6-CF, so it holds dimension better[30][4]
Fatigue / repeated-flex resistance1–5Moderate — fatigue limit at 25 % of tensile strength (8 MPa) on printed specimens, the best of the four polymers in that study[31]Good. Ensinger states carbon-filled PA66 compounds have improved fatigue strength in tension, flexure and compression[30]
Elasticity / flexibility1–5Rigid[5]Rigid[3]
Z strength as % of XY%84 (Bambu Lab, printed Z against XY tensile); 73 for PolyLite ASA[5][6]51 (Bambu Lab) to 53 (Polymaker PA612-CF15), printed[3][4]
Thermal Properties
HDT at 0.45 MPa°C93 (Prusament) to 103 (PolyLite), ISO 75 at 0.45 MPa; Bambu Lab 100[2][6][5]175 (Polymaker PA612-CF15) and 194 (Bambu Lab), ISO 75 at 0.45 MPa[3][4]
HDT at 1.8 MPa°C86 (Prusament) to 100 (PolyLite), ISO 75 at 1.8 MPa; Bambu Lab 92[2][6][5]114 (Polymaker PA612-CF15) and 170 (Bambu Lab), ISO 75 at 1.8 MPa[3][4]
Glass transition (Tg)°C98 (PolyLite, DSC)[6]70 (Bambu Lab, DSC)[3]
Melting point / Vicat°CAmorphous — no melting point; Vicat 105 (PolyLite, ISO 306)[6]210 (Polymaker PA612-CF15) and 225 (Bambu Lab) melting, DSC; Vicat 206 (Polymaker)[3][4]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[32]Not documented
Thermal expansion (CTE)µm/m·K69 ± 17 in XY and 115 ± 24 in the build direction (printed, TMA, 40–70 °C)[33]Not documented
Flammability / UL 94Flammable; no UL 94 rating published for standard ASA[5]Flammable; no UL 94 rating published for the grades surveyed[26]
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use. After 1000 h of QUV exposure to ASTM G154 Stratasys measured yield strength falling only from 30.5 to 30.3 MPa and stress at break by 3.0 %[16]Months outdoors before embrittlement — unstabilised polyamide yellows under UV[19]
Outdoor durability1000 h QUV per ASTM G154, cycling 8 h at 60 °C and 4 h at 50 °C with condensation: yield 30.5 → 30.3 MPa, stress at break 30.5 → 29.5 MPa, elongation 2.8 → 2.3 %, modulus 1.82 → 1.95 GPa[16]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[6]Withstands oils, fuels and alkalis[19]
Water / humidity resistance in service1–5Good — minor absorption[5]Absorbs water, properties shift — less than PA6 but more than PA12[25][3]
Food contactNot food safe[1]Not food-contact certified as filament[19]
Biodegradability / compostabilityNot biodegradable[1]Not biodegradable[19]
RecyclabilityNot accepted in household plastic collection[1]Not accepted in household plastic collection[19]
Electrical & ESD propertiesNot documentedSurface resistivity above 10¹² ohm — insulating (Polymaker PA612-CF15, ANSI/ESD S11.11)[4]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[34][17]Moderate — measurable VOCs and UFPs, ventilation advised[34]
VOC emission rateµg/min12–113 styrene, the range measured across the styrenic filaments tested; ASA itself was not among them[34]Up to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study[34]
Ultrafine-particle emission rateparticles/min2 × 10¹⁰ to 9 × 10¹⁰ median for ABS, the closest styrenic tested; ASA itself was not measured[34]≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured[34]
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[17][34]Caprolactam, at up to 180 µg/min from nylon filament[34]
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[34][17]Ventilated room or enclosure recommended[34]
Dust & fibre handling hazardNot documentedFibre is bound in the matrix; sanding dust should not be inhaled[26]
Post-Processing
Sanding & machiningSands well and takes filler before painting[1]Sands poorly — gums rather than powders[18]
Gluing & solvent weldingSolvent-welds with acetone[6]Cyanoacrylate; no common solvent welds polyamide[18]
Vapour / chemical smoothingAcetone vapour smoothing works — ASA dissolves in acetone[6]No practical vapour smoothing[18]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a dedicated Support for ABS that also serves ASA[17]Not documented
Dimensional accuracy & detailWarping and cooling-stress cracking are the accuracy limits; Stratasys notes the matte finish as a deliberate aesthetic advantage[17][16]Not documented
Solvents & Solubility
Soluble inAcetone dissolves it (Polymaker); MEK, THF, ethyl acetate and the chlorinated solvents dissolve the styrenic backbone.[35][6]Formic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[36]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[37]Zinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[36]
Solvent welding & smoothing agentAcetone vapour, ~20 min at 80 °C over 5 mm of liquid (15–40 min across brands); layer adhesion up, tensile slightly down.[38]None — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[36]

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. ASA — material basics Polymaker Wiki · 2026-08 · doc
  2. Prusament ASA Technical Datasheet v1.1 Prusa Polymers · 2024-05 · tds
  3. Bambu Filament Technical Data Sheet — PAHT-CF Bambu Lab · 2026-08 · tds
  4. Fiberon PA612-CF15 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  5. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  6. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  7. ASA — product page Bambu Lab US Store · 2026-08 · vendor
  8. Polymaker product catalogue Polymaker · 2026-08 · vendor
  9. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  10. Filastruder product catalogue Filastruder · 2026-08 · vendor
  11. ZYLtech ASA-GF Glass Fiber filament — product page ZYLtech · 2026-08 · vendor
  12. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  13. IEMAI ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  14. SUNLU ASA 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  15. YXPOLYER ASA Purple product page YXPOLYER · 2026-08 · vendor
  16. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  17. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  18. Nylon — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  19. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  20. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  21. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  22. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  23. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  24. Bambu Filament Technical Data Sheet — PA6-CF Bambu Lab · 2026-08 · tds
  25. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  26. Fiberon PA6-CF20 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  27. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  28. ApolloX Technical Data Sheet Formfutura · 2026-08 · tds
  29. TECAMID 66 GF30 black (PA66-GF30) — stock shape properties Ensinger · 2026-08 · tds
  30. TECACOMP PA66 CF30 black — injection-moulding compound Ensinger · 2026-08 · tds
  31. Mechanical, Fatigue, and Thermal Characterization of ASA, Nylon 12, PC and PC-ABS Manufactured by Fused Filament Fabrication (FFF) Polymers 18(2):302 · 2026-01 · paper
  32. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  33. Basalt Fiber Composites with Reduced Thermal Expansion for Additive Manufacturing Polymers 14(15):3216 · 2022-08 · paper
  34. 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
  35. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  36. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  37. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  38. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc