3D Printing Info

Filament comparison

ASA-CF vs Magnetic

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

Carbon-fibre ASA (ASA-CF) guideMagnetic filament guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA-CF comparisonsMore Magnetic comparisons
ASA-CF vs Magnetic — documented properties and sources
PropertyCarbon-fibre ASA (ASA-CF)ASAMagnetic filamentSPECIALTY
Market snapshot
Listing priceUSD/kg; dated snapshots$36.99/kg median; $25.00–$90.00/kg across 5 dated product listings$64.99/kg median; $64.99–$64.99/kg across 1 dated product listings
Identity & Market
Base polymer / chemistryASA reinforced with chopped carbon fibre — Formfutura's ApolloX CF10 is 10 wt%[1][2][3]PLA loaded with ferromagnetic iron powder, so printed parts respond to magnets[4]
Densityg/cm³1.02 (Bambu Lab), 1.1 (Formfutura ApolloX CF10) and 1.11 (3DXTech), ISO 1183[1][2][3]About 1.85 (Proto-pasta manufacturer figure) — 1.5× standard PLA[4]
Typical priceUSD/kg1 kg spools cluster near 37[5][6]1 kg spools cluster near 65[7]
Price range across brandsUSD/kg25–90 across brands; IEMAI 25, Ambrosia 33, Bambu Lab 37, Polymaker Fiberon 40, 3DXTech 90[8][5][6][9][10]64–70 across formats; 1 kg spool 65, 500 g 70, 2 kg 70[7]
Market availability1–5Available from several mainstream brands[5][6][9][8]Niche, a handful of specialist brands[7]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[6][9][5]1.75 and 2.85 mm; 0.1, 0.5, 1 and 2 kg spools[7]
Typical applicationsOutdoor structural parts, drone and antenna mounts where stiffness and UV stability both matter[1][2]Sensor targets, magnetic fixtures, and props that need to stick to a magnet or rust deliberately[4]
Printing Parameters
Nozzle temperature°C250–280 (Bambu Lab)[1]192 (Proto-pasta)[4]
Bed temperature°C80–100 (Bambu Lab)[1]60 (Proto-pasta)[4]
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][11]Open frame is fine[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[12][13]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][14]1.6–2.4 at Proto-pasta's 20–30 mm/s on a 0.4 mm nozzle at 0.2 mm layer[4]
Warping tendency1–5Moderate — needs adhesion aid or draught shield; the fibre reduces warping against unfilled ASA[11]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[12]Not documented
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[12]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[11]Intermediate — dry filament and a tuned profile; slow, and brittle in filament form[4]
Extruder requirementNot documentedProto-pasta advises an extrusion width 0.05 mm larger than the nozzle and warns feeding is inconsistent below 0.4 mm and on Bowden machines[4]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[11]Brass acceptable; hardened steel for volume work[4]
Abrasiveness1–5Highly abrasive — standard CF composite[11]Moderately abrasive — metal fill[4]
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[15][16]Moderate — needs dry filament and a clean nozzle; Prusa lists metal-filled composites as a higher clogging risk and recommends a 0.6 mm nozzle minimum[17]
Heat-creep / jam sensitivity1–5Slightly sensitive[13]Not documented
Hotend requirementNo special hotend required[13]Proto-pasta recommends a wear-resistant or larger nozzle for longer service intervals[4]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.33 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Not documented
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]Not documented
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]Polymaker rates PLA low-sensitivity and publishes no dry-versus-conditioned figures; absorbed water flashes to steam and shows as bubbling and poor layer adhesion[18]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[18]Not documented
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]Not documented
Young's modulusMPa4200 ± 270 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 5355 and Formfutura 7580[1][2][3]Not documented
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]Not documented
Flexural strengthMPa72 ± 5 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 78[1][2]Not documented
Flexural modulusMPa3740 ± 130 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 5210[1][2]Not documented
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][19]Not documented
Other impact dataCharpy unnotched 14.0 ± 2.2 printed XY (Bambu Lab, ISO 179), against 41.0 for unfilled Bambu Lab ASA[1][19]Not documented
Layer adhesion / Z tensileMPa30 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 33 against 72 in XY[1]Not documented
Brittleness1–5Brittle — snaps with little warning[1][2]Brittle — Proto-pasta describes the filament as more brittle than standard PLA and needing extra care in handling[4]
Creep resistance / sustained load1–5Good — no creep test found; chopped carbon fibre lifts modulus to 4200 MPa against 2379–2450 for unfilled ASA[1][20]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][19]Not documented
Elasticity / flexibility1–5Rigid[1]Rigid[4]
Z strength as % of XY%88 by tensile, 46 by flexural (printed, Bambu Lab)[1]Not documented
Thermal Properties
HDT at 0.45 MPa°C110 (ISO 75, 0.45 MPa, Bambu Lab) against 100 for unfilled Bambu Lab ASA[1][19]Not documented
HDT at 1.8 MPa°C102 (ISO 75, 1.8 MPa, Bambu Lab) against 92 for unfilled Bambu Lab ASA[1][19]Not documented
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[21]Not documented
Flammability / UL 94Flammable; no UL 94 rating published[19]Not documented
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; the acrylate rubber phase is unchanged by the fibre[22][12]Not documented
Outdoor durabilityNot documentedDeliberately rustable — Proto-pasta markets the iron content as oxidising when exposed to moisture[4]
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[20]Not documented
Food contactNot food safe[12]Not documented
Biodegradability / compostabilityNot biodegradable[12]Not documented
RecyclabilityNot accepted in household plastic collection[12]Not documented
Electrical & ESD propertiesSurface resistance above 10⁹ ohm/sq — not static-dissipative (3DXTech, ASTM D257)[2]Ferromagnetic: Proto-pasta states it responds to magnets and behaves similarly to pure iron[4]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[23][11]Low hazard — minimal VOC and particle emission; none of these materials was in the chamber study[23]
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[11][23]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[23][11]Open a window / occasional ventilation[23]
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[12]Polishing and deliberate rusting are the intended finishes[4]
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[12]Not documented
Gluing & solvent weldingSolvent-welds with acetone[20]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works[20]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[11]Not documented
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.[24][20]Chloroform dissolves the PLA matrix and leaves the iron powder behind; laboratory reagent, not workshop stock.[25][4]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[26]Acetone and ethyl acetate plasticise the matrix rather than dissolving it; water attacks the exposed iron.[25][4]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[27][20]None — PLA has no workshop-safe solvent, and the iron loading blocks the surface flow smoothing needs.[25]

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. Magnetic Iron PLA — product page and technical data Proto-pasta · 2026-08 · tds
  5. ASA-CF — product page Bambu Lab US Store · 2026-08 · vendor
  6. Polymaker product catalogue Polymaker · 2026-08 · vendor
  7. Proto-pasta product catalogue Proto-pasta · 2026-08 · vendor
  8. Filastruder product catalogue Filastruder · 2026-08 · vendor
  9. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  10. IEMAI CF-ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  11. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  12. ASA — material basics Polymaker Wiki · 2026-08 · doc
  13. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  14. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  15. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  16. Carbon Fiber Filled — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  17. Composite materials with metal or wood particles Prusa Knowledge Base · 2026-08 · doc
  18. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  19. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  20. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  21. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  22. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  23. 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
  24. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  25. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  26. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  27. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc