3D Printing Info

Filament comparison

PC-FR vs PLA Stone

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

Flame-retardant PC (PC-FR) guideStone-filled PLA guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PC-FR comparisonsMore PLA Stone comparisons
PC-FR vs PLA Stone — documented properties and sources
PropertyFlame-retardant PC (PC-FR)PCStone-filled PLAPLA
Market snapshot
Listing priceUSD/kg; dated snapshots$87.50/kg median; $54.99–$224.00/kg across 4 dated product listings$22.99/kg median; $15.99–$49.16/kg across 6 dated product listings
Identity & Market
Base polymer / chemistryFlame-retardant polycarbonate. Polymaker builds its grade on Covestro's Makrolon family and rates it UL 94 V-0[1][2]PLA filled with stone or mineral powder — Formfutura StoneFil declares 40–50 wt% stone powder[3][4]
Densityg/cm³1.18 (Bambu Lab) and 1.2 (Polymaker), ISO 1183[2][1]1.22 (Bambu Lab PLA Marble) and 1.50–1.70 (Formfutura StoneFil), ISO 1183[4][3]
Typical priceUSD/kg1 kg-equivalent spools span 55–224; the two mainstream 1 kg grades are 55 and the industrial grades 120–224[2][5]1 kg spools cluster near 21[6][5]
Price range across brandsUSD/kg55–224 across brands; Bambu Lab and Polymaker 55, 3DXTech FR PC/ABS 120, 3DXLABS FR-PC 224[2][5][7]16–49 across brands; SUNLU 16, ELEGOO 19, Polymaker 21, Bambu Lab 25, Prusament 38, Filament PM MarbleJet 49 on 0.5 kg spools[8][5][6][9][10][11]
Market availability1–5Available from several mainstream brands[2][5][7]Stocked by most mainstream brands[6][5][8]
Spool sizes & diameters1.75 mm; 0.75 and 1 kg spools[5][7][2]1.75 and 2.85 mm; 0.5 and 1 kg spools plus refills[5][3]
Typical applicationsElectrical enclosures, transport interiors and battery housings that must meet a flammability rating[1][2]Architectural models, sculpture and props with a matte mineral surface[4]
Diameter tolerance± mm±0.03 (Bambu Lab PC FR)[2]Not documented
Printing Parameters
Nozzle temperature°C260–280 (Bambu Lab); 250–270 (Polymaker)[2][1]190–230 (Bambu Lab)[4]
Bed temperature°C90–110 (Bambu Lab); 90–105 (Polymaker)[2][1]35–45 (Bambu Lab)[4]
Enclosure / chamber requirement1–5Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber, Polymaker 70–100 °C[2][1]Open frame is fine[4]
Recommended chamber temperature°C45–60 (Bambu Lab); 70–100 (Polymaker)[2][1]Not documented
Part cooling fan0–60 % (Bambu Lab)[2]Fan on[4]
Bed surface & adhesion aidSmooth or textured PEI plate (Bambu Lab)[2]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s24 at Bambu Lab's 300 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[2][12]Not documented
Warping tendency1–5Severe — heated chamber needed[1][13]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[14][15]Not documented
Stringing / oozing tendency1–5Moderate — retraction tuning needed; Polymaker flags stringing as a common PC problem[15]Not documented
Overall printing difficulty1–5Advanced — enclosure, hardware upgrades, tuning[2][13]Easy — minor profile tuning; 0.2 mm nozzles are not usable[16]
Extruder requirementNot documentedNozzles below 0.4 mm are not compatible (Bambu Lab)[16]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[13]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[16]
Abrasiveness1–5Non-abrasive[1]Moderately abrasive — stone fill[16][3]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; 3DXTech lists no special nozzle concerns but a 6 h pre-dry at 80 °C[17]Moderate — needs dry filament and a clean nozzle[16]
Heat-creep / jam sensitivity1–5Slightly sensitive[14]Not documented
Hotend requirementAll-metal hot end required (Simplify3D)[14]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Low (0.1–0.3 %) — 0.12 % saturated at 25 °C / 55 % RH (Bambu Lab), half that of unfilled Bambu Lab PC[2][18]Moderate — 0.44 % saturated at 25 °C / 55 % RH[4]
Equilibrium moisture content at ~50 % RH%0.12 saturated at 25 °C / 55 % RH (Bambu Lab)[2]0.44 saturated at 25 °C / 55 % RH (Bambu Lab)[4]
Drying temperature & time75 °C for 6 h (Polymaker)[1]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[19]Not documented
Effect of moisture on strengthNo dry-versus-conditioned figures are published. Polymaker calls PC highly hygroscopic and requires a 70–80 °C dry for 6–8 h; run wet, the loss shows as surface defects and poor layer adhesion[15][19]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[19]
Storage requirementAirtight containers with desiccant to prevent reabsorption[15]Not documented
Mechanical Properties
Tensile strength (XY)MPa60 ± 4 (Bambu Lab) and 67 ± 4.5 (Polymaker) printed XY, ISO 527[2][1]33 ± 4 printed XY, ISO 527 (Bambu Lab)[4]
Young's modulusMPa1670 ± 40 (Bambu Lab) and 2634 ± 182 (Polymaker) printed XY, ISO 527[2][1]2330 ± 240 printed XY, ISO 527 (Bambu Lab)[4]
Elongation at break%2.4 ± 0.3 (Bambu Lab) and 3.49 ± 0.7 (Polymaker) at break, printed XY, ISO 527 — the retardant roughly halves unfilled PC's elongation[2][1][20]6.7 ± 0.5 printed XY, ISO 527 (Bambu Lab)[4]
Flexural strengthMPa96.6 ± 1.3 printed XY, ISO 178 (Polymaker)[1]75 ± 5 printed XY, ISO 178 (Bambu Lab)[4]
Flexural modulusMPa2518 ± 53 printed XY, ISO 178 (Polymaker)[1]2920 ± 180 printed XY, ISO 178 (Bambu Lab)[4]
Charpy impact, notchedkJ/m²11.7 ± 1.6 printed XY, ISO 179, notched (Polymaker)[1]9.5 ± 2.6 printed XY, ISO 179, notched (Bambu Lab)[4]
Other impact dataNotched Charpy 7.5 ± 1.6 kJ/m² at −30 °C printed XY (Polymaker, ISO 179-1/1eA)[1]Charpy unnotched 24.0 printed XY (Bambu Lab, ISO 179)[4]
Layer adhesion / Z tensileMPa21 ± 3 (Bambu Lab) and 46 ± 4.8 (Polymaker) printed Z, ISO 527[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 70 (118) — the source does not name the scales and Shore D 79 on extruded unfilled PC stock (ASTM D785, D2240); no figure is published for a flame-retardant filament[21]Not documented
Creep resistance / sustained load1–5Good. Moulded unfilled PC sustained 41 MPa tensile creep at room temperature without breaking, but the retardant package drops the glass transition to 115 °C in Polymaker's grade, so the unfilled rating is not carried over in full[22][1]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[23][24][25]
Fatigue / repeated-flex resistance1–5Not documentedPoor — 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[26][4]
Elasticity / flexibility1–5Rigid[1]Rigid[4]
Z strength as % of XY%35 (Bambu Lab) to 69 (Polymaker), printed[2][1]91 by tensile, 73 by flexural (printed, Bambu Lab)[4]
Thermal Properties
HDT at 0.45 MPa°C110 (Polymaker) and 113 (Bambu Lab), ISO 75 at 0.45 MPa[1][2]56 (ISO 75, 0.45 MPa)[4]
HDT at 1.8 MPa°C107 (Polymaker) and 108 (Bambu Lab), ISO 75 at 1.8 MPa[1][2]53 (ISO 75, 1.8 MPa)[4]
Glass transition (Tg)°C115 (Polymaker) and 145 (Bambu Lab), DSC[1][2]56 (DSC)[4]
Melting point / Vicat°CAmorphous — no melting point; Vicat 114 (Bambu Lab, ISO 306)[2]156 peak melt (DSC); Formfutura gives a 120–170 melting range for StoneFil[4][3]
Continuous service temperature°C113 — Prusa publishes this as the temperature resistance of Prusament PC Blend[27]Not documented
Thermal expansion (CTE)µm/m·K68.4 on extruded unfilled PC stock (ASTM D696; source states 3.8e-5 in/in/°F); no figure is published for a flame-retardant grade[21]Not documented
Flammability / UL 94UL 94 V-0 (Polymaker PolyMax PC-FR); 3DXTech rates its FR PC/ABS V-0 at 1.5 mm on the base resin[1][28]Not documented
Environment & Chemical
UV resistance1–5Degrades within weeks outdoors unless stabilised[15]Degrades within weeks outdoors[29]
Chemical resistanceWithstands oils, solvents and fuels; Polymaker rates it good against weak acids[15]Not documented
Food contactBisphenol-A polycarbonate is not offered as food-contact filament[15]Not documented
Biodegradability / compostabilityNot biodegradable[15]Not documented
RecyclabilityMechanically recyclable but not accepted in household plastic collection[15]Not documented
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[30]Low hazard — minimal VOC and particle emission[30]
Ultrafine-particle emission rateparticles/min≈4 × 10¹⁰ median — the highest ultrafine-particle rate of the nine filaments in the chamber study, above every ABS tested[30]Not documented
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[30][13]None needed in a normal room[30]
Dust & fibre handling hazardNot documentedFormfutura'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 and machines well; the toughness means it cuts rather than chips[14]Sands to a stone-like matte surface[3]
Gluing & solvent weldingCyanoacrylate; dichloromethane solvent-welds PC but is a laboratory reagent[14]Not documented
Vapour / chemical smoothingNo practical vapour smoothing[14]Not documented
Support material pairingPrints its own supports; 3DXTech sells a dedicated PC break-away support[14]Support for PLA (Bambu Lab)[4]
Dimensional accuracy & detailNot documentedMatte mineral surface hides layer lines; 55° overhangs and 30 mm bridges as for plain PLA[4]
Solvents & Solubility
Soluble inDichloromethane, chloroform, DMF and dioxane dissolve it outright (Covestro, 6 days at 23 °C). 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 byMethanol, butyl acetate, ether, 1 % NaOH and phthalate plasticisers stress-crack it; acetone, MEK and xylene swell 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 agentDichloromethane cement welds PC — 16.5 MPa lap shear at one week (IPS Weld-On 3). A controlled carcinogen.[34]Chloroform vapour attacks only the resin fraction, so the filler is left standing proud; no workshop-safe agent exists.[35][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. PolyMax PC-FR Technical Data Sheet V5.5 Polymaker · 2024-11 · tds
  2. Bambu Filament Technical Data Sheet V1.0 — PC FR 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. Polymaker product catalogue Polymaker · 2026-08 · vendor
  6. PLA Marble — product page Bambu Lab US Store · 2026-08 · vendor
  7. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  8. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  9. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  10. SUNLU High Speed PLA Marble 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  11. Filament PM PLA MarbleJet technical data sheet Filament PM (Plasty Mladec) · 2026-08 · tds
  12. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  13. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  14. Polycarbonate — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  15. PC — material basics Polymaker Wiki · 2026-08 · doc
  16. PLA Usage Guide Bambu Lab Wiki · 2026-08 · doc
  17. 3DXTech Firewire FR-PC/ABS product page 3DXTech · 2026-08 · vendor
  18. Bambu Filament Technical Data Sheet V2.0 — PC Bambu Lab · 2026-08 · tds
  19. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  20. PolyLite PC Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  21. TECANAT natural (PC) — stock shape properties Ensinger · 2026-08 · tds
  22. Experimental data for creep and dynamic mechanical properties of polycarbonate and polycarbonate/ABS Data in Brief 42:108264 · 2022-06 · paper
  23. BambuLab PLA Basic vs PLA Tough vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  24. Polymaker PLA Pro vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  25. Carbon Fiber PLA vs META-PLA vs PLA+ vs PLA by Sunlu — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  26. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  27. Prusament PC Blend Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  28. Firewire Flame Retardant PC/ABS Technical Data Sheet Rev 3.0 3DXTech · 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. Makrolon — The chemical resistance (Makrolon 2800, 6 days at 23 °C and 50 °C) Covestro · 2016-12 · 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. Weld-On 3 Acrylic Plastic Cement — technical data sheet (shipped as dichloromethane) IPS Corporation · 2002-07 · tds
  35. 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