3D Printing Info

Filament comparison

ABS-CF vs Magnetic

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

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

2 selected · all documented properties

Open these two in the interactive comparisonMore ABS-CF comparisonsMore Magnetic comparisons
ABS-CF vs Magnetic — documented properties and sources
PropertyCarbon-fibre ABS (ABS-CF)ABSMagnetic filamentSPECIALTY
Market snapshot
Listing priceUSD/kg; dated snapshots$35.99/kg median; $22.00–$125.00/kg across 7 dated product listings$64.99/kg median; $64.99–$64.99/kg across 1 dated product listings
Identity & Market
Base polymer / chemistryABS reinforced with chopped carbon fibre[1]PLA loaded with ferromagnetic iron powder, so printed parts respond to magnets[2]
Densityg/cm³1.11 (ISO 1183)[1]About 1.85 (Proto-pasta manufacturer figure) — 1.5× standard PLA[2]
Typical priceUSD/kg1 kg-equivalent spools span 22–125; the middle of the market is about 36[3][4][5][6][7]1 kg spools cluster near 65[8]
Price range across brandsUSD/kg22–125 across brands; IEMAI 22, Siraya Tech 28 and 36 for the core-shell grade, YXPOLYER 35, Push Plastic 50 at 2 kg, 3DXTech 64 at 750 g; Stratasys-compatible cartridges run far higher[3][4][5][6][9][7]64–70 across formats; 1 kg spool 65, 500 g 70, 2 kg 70[8]
Market availability1–5Available from several mainstream brands[3][4]Niche, a handful of specialist brands[8]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 2 kg spools plus Stratasys-compatible cartridges[3][4]1.75 and 2.85 mm; 0.1, 0.5, 1 and 2 kg spools[8]
Typical applicationsStiff tooling and fixtures that must survive above 100 °C[1]Sensor targets, magnetic fixtures, and props that need to stick to a magnet or rust deliberately[2]
Printing Parameters
Nozzle temperature°CNot documented192 (Proto-pasta)[2]
Bed temperature°CNot documented60 (Proto-pasta)[2]
Enclosure / chamber requirement1–5Enclosure recommended[10]Open frame is fine[2]
Bed surface & adhesion aidClean the plate and apply glue; Simplify3D also lists Kapton tape and ABS slurry[10][11]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/sNot documented1.6–2.4 at Proto-pasta's 20–30 mm/s on a 0.4 mm nozzle at 0.2 mm layer[2]
Warping tendency1–5Moderate — needs adhesion aid or draught shield; the fibre reduces warping against unfilled ABS[10]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[10]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[10]Intermediate — dry filament and a tuned profile; slow, and brittle in filament form[2]
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[2]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[10]Brass acceptable; hardened steel for volume work[2]
Abrasiveness1–5Highly abrasive — standard CF composite[10]Moderately abrasive — metal fill[2]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; 3DXTech specifies a hardened nozzle of 0.4 mm minimum and 0.25 mm layers or higher, and Prusa lists composites as a higher clogging risk[13][14][15]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[16]
Heat-creep / jam sensitivity1–5Slightly sensitive[11]Not documented
Hotend requirementNo special hot-end required[11]Proto-pasta recommends a wear-resistant or larger nozzle for longer service intervals[2]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — the ABS matrix takes up 0.51–0.65 % saturated at 25 °C / 55 % RH and 3DXTech specifies a 80 °C, 4 h pre-dry[17][18][13]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[19]Not documented
Effect of moisture on strengthPolymaker rates ABS moderate-sensitivity and publishes no dry-versus-conditioned figures; absorbed water flashes to steam in the hotend and shows as bubbling and poor layer adhesion[19]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[19]
Storage requirementSealed with desiccant; Polymaker rates ABS moderate-sensitivity[19]Not documented
Mechanical Properties
Tensile strength (XY)MPa46 at break (printed XY, ISO 527)[1]Not documented
Young's modulusMPa5210 (printed XY, ISO 527) — more than double unfilled ABS[1]Not documented
Elongation at break%2 at break (printed XY, ISO 527)[1]Not documented
Flexural strengthMPa76 (printed XY, ISO 178)[1]Not documented
Flexural modulusMPa5260 (printed XY, ISO 178)[1]Not documented
Brittleness1–5Brittle — snaps with little warning; elongation at break 2 %[1]Brittle — Proto-pasta describes the filament as more brittle than standard PLA and needing extra care in handling[2]
Creep resistance / sustained load1–5Good — no creep test found; chopped carbon fibre restrains matrix flow and modulus rises to 5210 MPa against 2200–2330 for unfilled ABS[1][17][18]Not documented
Fatigue / repeated-flex resistance1–5Below average — no S-N curve found; elongation at break falls to 2 % against 10.5 % for unfilled ABS[1][17]Not documented
Elasticity / flexibility1–5Rigid[1]Rigid[2]
Thermal Properties
Glass transition (Tg)°C105 (DSC)[1]Not documented
Thermal expansion (CTE)µm/m·K19–25 along the print bead and 80–84 in the build direction at 30 °C (20 wt% CF, large-format printed, TMA)[20]Not documented
Environment & Chemical
Outdoor durabilityNot documentedDeliberately rustable — Proto-pasta markets the iron content as oxidising when exposed to moisture[2]
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[21]Not documented
Food contactNot food safe — Polymaker cites potential chemical leaching[12]Not documented
Biodegradability / compostabilityNot biodegradable[12]Not documented
RecyclabilityMechanically recyclable but not accepted in household plastic collection[12]Not documented
Electrical & ESD propertiesSurface resistance above 10⁹ ohm/sq — not static-dissipative (ASTM D257)[1]Ferromagnetic: Proto-pasta states it responds to magnets and behaves similarly to pure iron[2]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[22][10]Low hazard — minimal VOC and particle emission; none of these materials was in the chamber study[22]
VOC emission rateµg/min12–113 styrene, the dominant VOC from every ABS and HIPS combination tested[22]Not documented
Ultrafine-particle emission rateparticles/min2 × 10¹⁰ to 9 × 10¹⁰ median across all ABS printers, two orders of magnitude above PLA's ≈1 × 10⁸[22]Not documented
Hazardous species emittedStyrene dominates. Bambu Lab states ABS and ASA release harmful gases such as styrene at printing temperature, which can be toxic and cause dizziness or nausea[22][10]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration — an enclosure alone cut measured UFP by only about 35 %[22][10]Open a window / occasional ventilation[22]
Dust & fibre handling hazardCarbon fibre is bound in the matrix; sanding dust should not be inhaled[1]Not documented
Post-Processing
Sanding & machiningSands well and takes filler before painting[12]Polishing and deliberate rusting are the intended finishes[2]
Painting & finishingPaints readily after light abrasion[12]Not documented
Vapour / chemical smoothingAcetone smoothing is blunted by the fibre — only the resin fraction dissolves[21]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a dedicated Support for ABS[23][10]Not documented
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre as sludge; MEK, THF, ethyl acetate and chlorinated solvents do the same.[24][21]Chloroform dissolves the PLA matrix and leaves the iron powder behind; laboratory reagent, not workshop stock.[25][2]
Softened or crazed byPetrol and perchloroethylene soften it and benzene attacks it; d-limonene disrupts layer adhesion in some ABS and ASA grades.[24][26]Acetone and ethyl acetate plasticise the matrix rather than dissolving it; water attacks the exposed iron.[25][2]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[27][21]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. CarbonX Carbon Fiber ABS Technical Data Sheet 3DXTech · 2026-08 · tds
  2. Magnetic Iron PLA — product page and technical data Proto-pasta · 2026-08 · tds
  3. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  4. Push Plastic product catalogue Push Plastic · 2026-08 · vendor
  5. IEMAI CF-ABS 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  6. Siraya Tech Fibreheart ABS-CF Filament product page Siraya Tech · 2026-08 · vendor
  7. YXPOLYER ABS CF product page YXPOLYER · 2026-08 · vendor
  8. Proto-pasta product catalogue Proto-pasta · 2026-08 · vendor
  9. Siraya Tech Fibreheart ABS-CF Core Filament product page Siraya Tech · 2026-08 · vendor
  10. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  11. ABS — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  12. ABS — material basics Polymaker Wiki · 2026-08 · doc
  13. CARBONX ABS+CF — product page (print recommendations) 3DXTech · 2026-08 · doc
  14. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  15. Carbon Fiber Filled — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  16. Composite materials with metal or wood particles Prusa Knowledge Base · 2026-08 · doc
  17. Bambu Filament Technical Data Sheet V3.0 — ABS Bambu Lab · 2026-08 · tds
  18. Polymaker ABS Pro Technical Data Sheet V1 (2026-05-29) Polymaker · 2026-05 · tds
  19. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  20. Effects of Fiber Orientation on the Coefficient of Thermal Expansion of Fiber-Filled Polymer Systems in Large Format Polymer Extrusion-Based Additive Manufacturing Materials 15(8):2764 · 2022-04 · paper
  21. PolyLite ABS Technical Data Sheet (V5.5 served at this URL) Polymaker · 2024-11 · tds
  22. 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
  23. HIPS — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  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