3D Printing Info

Filament comparison

PA6-CF vs PLA Stone

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

Carbon-fibre PA6 (PA6-CF) guideStone-filled PLA guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PA6-CF comparisonsMore PLA Stone comparisons
PA6-CF vs PLA Stone — documented properties and sources
PropertyCarbon-fibre PA6 (PA6-CF)PAStone-filled PLAPLA
Market snapshot
Listing priceUSD/kg; dated snapshots$62.48/kg median; $39.00–$133.32/kg across 6 dated product listings$22.99/kg median; $15.99–$49.16/kg across 6 dated product listings
Identity & Market
Base polymer / chemistryPA6 reinforced with chopped carbon fibre — Polymaker's grade is 20 wt%[1][2]PLA filled with stone or mineral powder — Formfutura StoneFil declares 40–50 wt% stone powder[3][4]
Densityg/cm³1.09 (Bambu Lab), 1.17 (Polymaker Fiberon and 3DXTech), ISO 1183[2][1][5]1.22 (Bambu Lab PLA Marble) and 1.50–1.70 (Formfutura StoneFil), ISO 1183[4][3]
Typical priceUSD/kg1 kg-equivalent spools span 39–133; the middle of the market is about 80[2][6][7][8]1 kg spools cluster near 21[9][6]
Price range across brandsUSD/kg39–133 across brands; IEMAI 3D 39, Bambu Lab 43, YXPOLYER 45, Polymaker Fiberon 80, 3DXTech CarbonX 83, Obsidian 133[2][6][10][11][7][8]16–49 across brands; SUNLU 16, ELEGOO 19, Polymaker 21, Bambu Lab 25, Prusament 38, Filament PM MarbleJet 49 on 0.5 kg spools[12][6][9][10][13][14]
Market availability1–5Stocked by most mainstream brands[2][6][11][10][7][8]Stocked by most mainstream brands[9][6][12]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75, 1 and 2 kg spools[6][11][2]1.75 and 2.85 mm; 0.5 and 1 kg spools plus refills[6][3]
Typical applicationsLoad-bearing brackets, tooling and drone frames that must hold strength above 150 °C[2][1]Architectural models, sculpture and props with a matte mineral surface[4]
Printing Parameters
Nozzle temperature°C260–290 (Bambu Lab); 280–300 (Polymaker Fiberon)[2][1]190–230 (Bambu Lab)[4]
Bed temperature°C40–50 (Polymaker Fiberon)[1]35–45 (Bambu Lab)[4]
Enclosure / chamber requirement1–5Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber, Polymaker room temperature[2][1]Open frame is fine[4]
Recommended chamber temperature°C45–60 (Bambu Lab); room temperature (Polymaker Fiberon)[2][1]Not documented
Part cooling fanNot documentedFan on[4]
Bed surface & adhesion aidEngineering or high-temperature plate with glue (Bambu Lab)[2]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s8 at Bambu Lab's 100 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer; Polymaker rates its grade to 300 mm/s[2][1][15]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[2]Not documented
Stringing / oozing tendency1–5Moderate — retraction tuning needed[16]Not documented
Overall printing difficulty1–5Expert / industrial hardware only — enclosure, hardened nozzle, an 80 °C dry and a printer that can hold the filament dry throughout[2][1][17]Easy — minor profile tuning; 0.2 mm nozzles are not usable[18]
Extruder requirement0.6 mm nozzle recommended by Bambu Lab; 0.4 and 0.8 also supported[2]Nozzles below 0.4 mm are not compatible (Bambu Lab)[18]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required — Polymaker measures brass nozzle life at about 9 h on PA6-CF20 and recommends hardened steel or ruby[1]Brass acceptable; hardened steel for volume work — Bambu Lab's compatibility table says no hardened nozzle is needed while the note under the same table groups PLA Marble with particle-filled materials that should always use one[18]
Abrasiveness1–5Highly abrasive — standard CF composite; Polymaker puts brass nozzle life at roughly 9 h[1]Moderately abrasive — stone fill[18][3]
Nozzle clog risk1–5Very high — frequent jams without careful setup; the combination of moisture and fibre is the worst case in the dataset[17][1]Moderate — needs dry filament and a clean nozzle[18]
Heat-creep / jam sensitivity1–5Moderate — good heatbreak cooling needed[19]Not documented
Hotend requirementHardened steel or ruby nozzle plus an all-metal hot end rated to 300 °C[1][2]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Very high (>2 %) — 2.35 % saturated at 25 °C / 55 % RH (Bambu Lab)[2]Moderate — 0.44 % saturated at 25 °C / 55 % RH[4]
Equilibrium moisture content at ~50 % RH%2.35 saturated at 25 °C / 55 % RH (Bambu Lab)[2]0.44 saturated at 25 °C / 55 % RH (Bambu Lab)[4]
Drying temperature & time80 °C for 8–12 h (Bambu Lab); 100 °C for 10 h (Polymaker Fiberon)[2][1]Not documented
Symptoms when wetPopping and cracking during extrusion, then hard-to-diagnose defects[20]Not documented
Effect of moisture on strengthPolymaker publishes dry and wet printed blocks for PA6-CF20 itself: at 5.30 % moisture tensile falls 109.3 → 54.7 MPa and modulus 8636 → 2508 MPa, while notched Charpy rises 11.0 → 35.6 kJ/m². Fibre reinforcement reduces but does not remove the effect[1][20]Polymaker rates PLA low-sensitivity and publishes no dry-versus-conditioned figures for this grade; absorbed water flashes to steam and shows as bubbling and poor layer adhesion[17]
Storage requirementSealed below 20 % RH with desiccant; often needs to stay in a dryer while printing[17]Not documented
Hydrolysis at melt temperaturePolymaker 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[1][21]Not documented
Mechanical Properties
Tensile strength (XY)MPa102 ± 7 (Bambu Lab) and 109.3 ± 2.4 (Polymaker Fiberon, dry/annealed) printed XY, ISO 527; the Fiberon grade falls to 54.7 ± 1.1 conditioned to 5.30 % moisture; 3DXTech quotes 63 at break[2][1][5]33 ± 4 printed XY, ISO 527 (Bambu Lab)[4]
Young's modulusMPa4430 ± 310 (Bambu Lab) and 8636 ± 211 (Polymaker Fiberon, dry/annealed) printed XY, ISO 527; Fiberon falls to 2508 ± 83 conditioned; 3DXTech quotes 3800[2][1][5]2330 ± 240 printed XY, ISO 527 (Bambu Lab)[4]
Elongation at break%5.8 ± 1.6 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 3 at break[2][5]6.7 ± 0.5 printed XY, ISO 527 (Bambu Lab)[4]
Flexural strengthMPa161.0 ± 3.9 printed XY dry, 64.9 ± 4.9 conditioned, ISO 178 (Polymaker Fiberon); 3DXTech quotes 84[1][5]75 ± 5 printed XY, ISO 178 (Bambu Lab)[4]
Flexural modulusMPa7038 ± 205 printed XY dry and 2286 ± 185 conditioned, ISO 178 (Polymaker Fiberon); 3DXTech quotes 3750[1][5]2920 ± 180 printed XY, ISO 178 (Bambu Lab)[4]
Charpy impact, notchedkJ/m²11.0 ± 0.3 printed XY dry and 35.6 ± 1.2 conditioned, ISO 179 notched (Polymaker Fiberon)[1]9.5 ± 2.6 printed XY, ISO 179, notched (Bambu Lab)[4]
Other impact dataCharpy unnotched 24.0 ± 1.0 printed XY dry and 73.0 ± 2.0 conditioned, 7.5 ± 2.7 printed Z dry (Polymaker Fiberon); Bambu Lab 40.3 ± 2.5 unnotched, 13.4 ± 1.7 notched[1][2]Charpy unnotched 24.0 printed XY (Bambu Lab, ISO 179)[4]
Layer adhesion / Z tensileMPa48 ± 6 (Bambu Lab) and 54.0 ± 5.2 (Polymaker Fiberon, dry) printed Z, ISO 527; Fiberon falls to 25.5 ± 1.2 conditioned[2][1]30 ± 4 printed Z, ISO 527 (Bambu Lab)[4]
Brittleness1–5Moderate[2][1]Brittle — snaps with little warning[4]
Hardness (scale-specific)Shore A / Shore D / RockwellRockwell M88 / R117 on extruded PA66-GF30 stock (ASTM D785); no figure is published for a carbon-fibre nylon filament[22]Not documented
Creep resistance / sustained load1–5Good. Ensinger rates its PA66-CF30 injection-moulding compound for exceptional performance under both static and dynamic loading with 110 °C continuous service; in a printed part the fibre restrains the matrix, but conditioning to equilibrium moisture still softens it[23][20]Poor — no stone-filled creep test; plain printed PLA sagged from 12 to 16.2–21.8 mm over 5 days at 1.25 kg[24][25][26]
Fatigue / repeated-flex resistance1–5Good. Ensinger states its PA66-CF30 compound has improved fatigue strength in tension, flexure and compression against unfilled and glass-filled PA66[23]Poor — no grade-specific S-N curve; plain printed PLA ran 38 000–49 000 cycles at 30 % of tensile strength and the mineral filler leaves a brittle compound[27][4]
Elasticity / flexibility1–5Rigid[2]Rigid[4]
Z strength as % of XY%47 (Bambu Lab) to 49 (Polymaker Fiberon), printed[2][1]91 by tensile, 73 by flexural (printed, Bambu Lab)[4]
Thermal Properties
HDT at 0.45 MPa°C186 (Bambu Lab) and 215 (Polymaker Fiberon), ISO 75 at 0.45 MPa[2][1]56 (ISO 75, 0.45 MPa)[4]
HDT at 1.8 MPa°C164 (Bambu Lab) and 173 (Polymaker Fiberon), ISO 75 at 1.8 MPa[2][1]53 (ISO 75, 1.8 MPa)[4]
Glass transition (Tg)°C68 (Bambu Lab) to 74.2 (Polymaker Fiberon), DSC; 3DXTech quotes 70[2][1][5]56 (DSC)[4]
Melting point / Vicat°C223 melting (Bambu Lab, DSC); Vicat 212 (ISO 306)[2]156 peak melt (DSC); Formfutura gives a 120–170 melting range for StoneFil[4][3]
Continuous service temperature°CBounded by heat deflection of 164–173 °C at 1.8 MPa; no loaded-bar service figure is published[2][1]Not documented
Annealing response100 °C for 16 h (Polymaker Fiberon)[1]Not documented
Thermal expansion (CTE)µm/m·K94 in the XY direction and 180 in Z, measured on XY-built specimens (79 and 148 on XZ/ZX-built specimens), room temperature to 60 °C, ASTM E831. From Stratasys FDM Nylon-CF10, a blended-nylon matrix with 10 wt% carbon fibre — the closest published printed CTE for a carbon-fibre nylon[28]Not documented
Flammability / UL 94Flammable; no UL 94 rating published[1]Not documented
Environment & Chemical
UV resistance1–5Months outdoors before embrittlement — unstabilised polyamide yellows and chalks under UV[16]Degrades within weeks outdoors[29]
Chemical resistanceWithstands oils, fuels and alkalis[16]Not documented
Water / humidity resistance in service1–5Absorbs water, properties shift[20]Not documented
Food contactNot food-contact certified[16]Not documented
Biodegradability / compostabilityNot biodegradable[16]Not documented
RecyclabilityFibre-filled polyamide is not accepted in household plastic collection[16]Not documented
Electrical & ESD propertiesSurface resistance above 10⁹ ohm/sq — not static-dissipative (3DXTech, ASTM D257)[5]Not documented
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[30]Low hazard — minimal VOC and particle emission[30]
VOC emission rateµg/minUp to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study[30]Not documented
Ultrafine-particle emission rateparticles/min≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured[30]Not documented
Hazardous species emittedCaprolactam, at up to 180 µg/min from nylon filament[30]Not documented
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[30]None needed in a normal room[30]
Dust & fibre handling hazardFibre is bound in the matrix; sanding dust should not be inhaled[1]Formfutura's SDS sets an occupational limit of 1 mg/m³ for the stone powder and lists it as both a fibre and a particulate — do not dry-sand without extraction[3]
Post-Processing
Sanding & machiningSands to a matte finish; the fibre makes it cut more cleanly than unfilled nylon[19]Sands to a stone-like matte surface[3]
Gluing & solvent weldingCyanoacrylate; no common solvent welds polyamide[19]Not documented
Vapour / chemical smoothingNo practical vapour smoothing[19]Not documented
Support material pairingPolyDissolve S1 (Polymaker Fiberon)[1]Support for PLA (Bambu Lab)[4]
Dimensional accuracy & detailConditioned parts grow; Polymaker declines to publish a standard dimensional allowance because it depends on geometry and infill[20]Matte mineral surface hides layer lines; 55° overhangs and 30 mm bridges as for plain PLA[4]
Solvents & Solubility
Soluble inFormic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[31]Chloroform dissolves the PLA matrix (10 % w/v, 2–4 h at 23 °C) and leaves the filler as loose sludge; laboratory reagent.[32]
Softened or crazed byZinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[31]Acetone, ethyl acetate and toluene plasticise the matrix but dissolve <1 % even at 65 °C; acetone submersion crazes parts.[32][33]
Solvent welding & smoothing agentNone — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[31]Chloroform vapour attacks only the resin fraction, so the filler is left standing proud; no workshop-safe agent exists.[34][33]

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. Fiberon PA6-CF20 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  2. Bambu Filament Technical Data Sheet — PA6-CF Bambu Lab · 2026-08 · tds
  3. StoneFil safety data sheet Formfutura · 2026-08 · msds
  4. Bambu Filament Technical Data Sheet — PLA Marble Bambu Lab · 2026-08 · tds
  5. CarbonX Carbon Fiber Nylon (Gen3) Technical Data Sheet v3.0 3DXTech · 2026-08 · tds
  6. Polymaker product catalogue Polymaker · 2026-08 · vendor
  7. YXPOLYER PA6 CF-Black 1 kg — product page YXPOLYER · 2026-08 · vendor
  8. IEMAI 3D CF-PA6 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  9. PLA Marble — product page Bambu Lab US Store · 2026-08 · vendor
  10. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  11. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  12. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  13. SUNLU High Speed PLA Marble 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  14. Filament PM PLA MarbleJet technical data sheet Filament PM (Plasty Mladec) · 2026-08 · tds
  15. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  16. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  17. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  18. PLA Usage Guide Bambu Lab Wiki · 2026-08 · doc
  19. Nylon — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  20. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  21. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  22. TECAMID 66 GF30 black (PA66-GF30) — stock shape properties Ensinger · 2026-08 · tds
  23. TECACOMP PA66 CF30 black — injection-moulding compound Ensinger · 2026-08 · tds
  24. BambuLab PLA Basic vs PLA Tough vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  25. Polymaker PLA Pro vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  26. Carbon Fiber PLA vs META-PLA vs PLA+ vs PLA by Sunlu — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  27. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  28. FDM Nylon-CF10 — Material Data Sheet (blended nylon, 10 wt% carbon fibre) Stratasys · 2026-08 · tds
  29. PLA — material guide Prusa Knowledge Base · 2026-08 · doc
  30. 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
  31. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  32. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  33. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  34. Effect of vapour smoothing in trichloromethane on 3D printed PLA — surface, mechanical and chemical structure Pitale, Keche & Chopra, Engineering Research Express 6(4) 045579 · 2024-12 · paper