3D Printing Info

Filament comparison

PLA-CF vs PP-GF

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

Carbon-fibre PLA (PLA-CF) guideGlass-fibre PP (PP-GF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PLA-CF comparisonsMore PP-GF comparisons
PLA-CF vs PP-GF — documented properties and sources
PropertyCarbon-fibre PLA (PLA-CF)PLAGlass-fibre PP (PP-GF)POLYOLEFIN
Market snapshot
Listing priceUSD/kg; dated snapshots$29.99/kg median; $19.00–$79.98/kg across 9 dated product listings$49.09/kg median; $46.27–$86.01/kg across 3 dated product listings
Identity & Market
Base polymer / chemistryPLA filled with chopped carbon fibre — 5–10 wt% (Bambu Lab SDS), 8 wt% (Polymaker)[1][2]Polypropylene reinforced with chopped glass fibre[3][4]
Densityg/cm³1.22 (Bambu Lab) to 1.29 (Polymaker, 3DXTech), ISO 1183[5][2][6]1.12 (Prusament PP Glass Fiber, ISO 1183) — the glass lifts it above water[3]
Typical priceUSD/kg1 kg spools span 19–80; the middle of the market is about 31[7][8][6][9][10]1 kg-equivalent spools cluster near 49[11][12][13]
Price range across brandsUSD/kg19–80 across brands; IEMAI 19, LANDU 24, SUNLU 27, Polymaker 30, Bambu Lab 32, 3DXTech 47, Proto-pasta 80[8][7][6][14][9][15][10]46-86 across brands; BCN3D PP GF30 46 at 700 g, BASF Ultrafuse PP GF30 49 at 2.2 kg, Prusament PP Glass Fiber 86 at 850 g[11][12][13]
Market availability1–5Stocked by most mainstream brands[7][8][6][14]Available from several mainstream brands[11][12][13]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75, 1 and 3 kg spools[14][6][16]1.75 and 2.85 mm; 700 g, 850 g and 2.2 kg spools[11][12][13]
Typical applicationsStiff jigs, drone and RC frames, tool holders — matte black finish, no gain in tensile strength[5][2]Stiff, chemically resistant parts where PP-CF's cost or conductivity is unwanted[4]
Diameter tolerance± mm±0.03 (Bambu Lab)[7]±0.04 (Prusament)[3]
Printing Parameters
Nozzle temperature°C210–240 (Bambu Lab); 190–230 (Polymaker)[5][2]245 ± 10 (Prusament) — 25 °C below the carbon-fibre grade[3][17]
Bed temperature°C35–45 (Bambu Lab); 25–60 (Polymaker)[5][2]95 ± 10 (Prusament)[3]
Enclosure / chamber requirement1–5Open frame is fine[2]Enclosure recommended — Simplify3D lists an enclosure as a hardware requirement and Polymaker advises one below 70 °C ambient to stop warping and cracking[18][19]
Part cooling fanFan on[5][2]Off — Prusa runs 0 % except 100 % on bridges[3]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s16 at Bambu Lab's 200 mm/s cap and 24 at Polymaker's 300 mm/s, on a 0.4 mm nozzle at 0.2 mm layer; Bambu Lab's own filament guide says 250 mm/s where its TDS says 200[5][20][2][21]4 at Prusa's 50 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[3][21]
Warping tendency1–5None[5]High — enclosure needed for reliable large parts; Prusa recommends a brim[3]
Bed-adhesion difficulty1–5Not documentedVery difficult — special plates or slurry required[3]
Stringing / oozing tendency1–5Slight[2]Not documented
Overall printing difficulty1–5Easy — minor profile tuning; needs a hardened nozzle and 0.4 mm or larger[20][2]Advanced — enclosure, hardware upgrades, tuning; hardened nozzle mandatory[3]
Extruder requirementNozzles below 0.4 mm are not compatible (Bambu Lab)[20]Prusa states a hardened nozzle is necessary and recommends a brim[3]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[20][2]Hardened steel required[3]
Abrasiveness1–5Highly abrasive — standard CF composite[20][22]Highly abrasive — standard GF composite[3]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle[20]Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[23]
Hotend requirementHardened steel nozzle; Bambu Lab lists PLA-CF among the filaments its hardened-steel nozzle exists for[22][20]Not documented
Other hardware wearBambu Lab reports AMS wear; Polymaker advises against running PLA-CF through an AMS at all[20][2]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.42 % saturated at 25 °C / 55 % RH (Bambu Lab); 0.38 % equilibrium (Polymaker)[5][2]Low (0.1–0.3 %) — 0.11 % at both 24 h and 7 days, higher than the carbon-fibre grade's 0.04 % but still very low[3][17]
Equilibrium moisture content at ~50 % RH%0.42 saturated at 25 °C / 55 % RH (Bambu Lab); 0.38 equilibrium (Polymaker)[5][2]0.11 after 24 h and 0.11 after 7 days at 24 °C / 22 % RH (Prusa Polymers)[3]
Drying temperature & time55 °C for 6–8 h[5][2]Not documented
Effect of moisture on strengthPolymaker 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[24]Not applicable in practice at 0.11 % equilibrium uptake[3]
Storage requirementNot documentedNo special storage needed[3]
Mechanical Properties
Tensile strength (XY)MPa31.2 (Polymaker) to 38 (Bambu Lab) printed XY, ISO 527; 48 at break for 3DXTech[5][2][6]46.6 ± 1.3 filament tensile yield (Prusament, ISO 527) — more than double the carbon-fibre grade's 21[3][17]
Young's modulusMPa2790 (Bambu Lab) to 3281 (Polymaker) printed XY, ISO 527; 4950 for 3DXTech[5][2][6]Not documented
Elongation at break%8.4 (Bambu Lab) and 13.2 (Polymaker) printed XY, ISO 527; 2 for 3DXTech[5][2][6]Not documented
Flexural strengthMPa51.7 (Polymaker) to 89 (Bambu Lab) printed XY, ISO 178[5][2]Not documented
Flexural modulusMPa3381 (Polymaker) to 3950 (Bambu Lab) printed XY, ISO 178; 6320 for 3DXTech[5][2][6]Not documented
Charpy impact, notchedkJ/m²5.5 (Polymaker) and 7.6 (Bambu Lab) printed XY, ISO 179, notched[5][2]7.9 ± 0.4 printed horizontal and 9.9 ± 0.8 printed vertical XZ (ISO 179-1, notched)[3]
Other impact dataCharpy unnotched 23.2 printed XY (Bambu Lab, ISO 179)[5]Not documented
Layer adhesion / Z tensileMPa15.1 (Polymaker) to 26 (Bambu Lab) printed Z, ISO 527[5][2]Not documented
Brittleness1–5Brittle — snaps with little warning; elongation in Z falls to 0.9 % (Polymaker)[2][5]Moderate[3]
Hardness (scale-specific)Shore A / Shore D / Rockwell71.5 Shore D measured on printed bars for Sunlu CF PLA (My Tech Fun), against 75.3 for the same maker's unfilled PLA[25]Rockwell R102 (and M95) on extruded unfilled PP stock (ASTM D785); no figure is published for a glass-fibre PP filament[26]
Creep resistance / sustained load1–5Poor — 12 mm bars sagged to 15.1, 19.8 and 21.3 mm over 5 days at 1.25 kg across three brands, against 16.2–21.8 mm for their unfilled PLA[27][28][25]Not documented
Fatigue / repeated-flex resistance1–5Poor — no CF-grade S-N curve; plain printed PLA ran 38 000–49 000 cycles at 30 % of tensile strength and elongation in Z falls to 0.9 %[29][2]Not documented
Elasticity / flexibility1–5Rigid[2]Rigid[3]
Z strength as % of XY%48 (Polymaker) to 68 (Bambu Lab), printed[5][2]Not documented
Thermal Properties
HDT at 0.45 MPa°C54 (Polymaker) to 55 (Bambu Lab), ISO 75 at 0.45 MPa[5][2]138.3 (ISO 75, 0.45 MPa)[3]
HDT at 1.8 MPa°C50 (Polymaker) to 54 (Bambu Lab), ISO 75 at 1.8 MPa[5][2]112.6 (ISO 75, 1.8 MPa)[3]
Glass transition (Tg)°C62–63 (DSC)[5][2]Not documented
Melting point / Vicat°C162–165 peak melt (DSC); Vicat 64 °C (Polymaker)[5][2]Not documented
Continuous service temperature°C50–61 — loaded bars begin to move at this temperature across three brands (Sunlu 50, Bambu Lab and Polymaker 61)[27][28][25]Not documented
Environment & Chemical
UV resistance1–5Degrades within weeks outdoors[30]Not documented
Chemical resistanceGood against weak acids, oils and grease; poor against strong acids and alkalis[2]Excellent against acids, alkalis and most solvents[19]
Water / humidity resistance in service1–5Not documentedExcellent — essentially unaffected[3]
Health & Safety
Fume toxicity1–5Low hazard — minimal VOC and particle emission[31]Low hazard — minimal VOC and particle emission. Inferred: no polyolefin was among the nine filaments in the Azimi chamber study, so this is a family-level judgement rather than a measurement[31]
Ventilation / filtration requirement1–5None needed in a normal room[31]Open a window / occasional ventilation. Inferred — no polyolefin was measured in the chamber study[31]
Dust & fibre handling hazardCarbon fibre is bound in the matrix; sanding dust should not be inhaled[1]Glass fibre is bound in the matrix; avoid inhaling sanding dust[3]
Post-Processing
Support material pairingSupport for PLA (Bambu Lab); PolySupport and PolyDissolve S1 (Polymaker)[5][2]Not documented
Dimensional accuracy & detailMatte finish hides layer lines; stiffness is the gain — tensile strength stays at or below Bambu Lab PLA Basic's 35 MPa and Polymaker PolyLite PLA's 52.3 MPa[5][2][32][33]Not documented
Solvents & Solubility
Soluble inChloroform dissolves the PLA matrix (10 % w/v, 2–4 h at 23 °C) and leaves the filler as loose sludge; laboratory reagent.[34]None at room temperature; chloroform dissolves the matrix at 60 °C and xylene at about 118 °C, leaving the fibre.[35][36]
Softened or crazed byAcetone, ethyl acetate and toluene plasticise the matrix but dissolve <1 % even at 65 °C; acetone submersion crazes parts.[34][37]Xylene, decalin, CCl4 and chlorobenzene are heavily absorbed at 20 °C; oleum, chlorosulphonic acid and bromine destroy it.[35]
Solvent welding & smoothing agentChloroform vapour attacks only the resin fraction, so the filler is left standing proud; no workshop-safe agent exists.[38][37]None — nothing softens PP at room temperature, so joints have to be welded thermally rather than chemically.[35]

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. Safety Data Sheet SDS20251127A50 — Bambu PLA-CF Bambu Lab · 2025-11 · msds
  2. PolyLite PLA-CF Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  3. Prusament PP Glass Fiber Technical Datasheet v1.0 Prusa Polymers · 2024-11 · tds
  4. Prusament PP Glass Fiber — material page Prusa Polymers · 2026-08 · doc
  5. Bambu Filament Technical Data Sheet V4.0 — PLA-CF Bambu Lab · 2026-08 · tds
  6. CarbonX PLA+CF Technical Data Sheet v3 3DXTech · 2026-08 · tds
  7. PLA-CF — product page Bambu Lab US Store · 2026-08 · vendor
  8. PolyLite PLA-CF — product page Polymaker Shop · 2026-08 · vendor
  9. IEMAI CF-PLA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  10. SUNLU PLA-CF Carbon Fiber 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  11. BASF Ultrafuse PP GF30 Black 2.85 mm 2.200 g igo3d · 2026-08 · vendor
  12. BCN3D PP GF30 Black 2.85 mm 700 g igo3d · 2026-08 · vendor
  13. Prusa Prusament PP Glass Fiber Natural (NFC), 1.75 mm / 850 g 3DJAKE · 2026-08 · vendor
  14. Proto-pasta product catalogue Proto-pasta · 2026-08 · vendor
  15. LANDU Carbon Fiber PLA Filament 1.75 mm Black 1 kg LANDU (Amazon US) · 2026-08 · vendor
  16. Polymaker product catalogue Polymaker · 2026-08 · vendor
  17. Prusament PP Carbon Fiber Technical Datasheet v1.0 Prusa Polymers · 2024-11 · tds
  18. Polypropylene — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  19. PP — material basics Polymaker Wiki · 2026-08 · doc
  20. PLA Usage Guide Bambu Lab Wiki · 2026-08 · doc
  21. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  22. Nozzles — material and compatibility Bambu Lab Wiki · 2026-08 · doc
  23. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  24. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  25. Carbon Fiber PLA vs META-PLA vs PLA+ vs PLA by Sunlu — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  26. TECAFINE PP natural — stock shape properties Ensinger · 2026-08 · tds
  27. BambuLab PLA Basic vs PLA Tough vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  28. Polymaker PLA Pro vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  29. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  30. PLA — material guide Prusa Knowledge Base · 2026-08 · doc
  31. 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
  32. PolyLite PLA Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  33. Bambu Filament Technical Data Sheet V3.0 — PLA Basic Bambu Lab · 2026-08 · tds
  34. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  35. Pro-fax and Moplen polypropylene — Chemical Resistance Guide (20, 60 and 100 °C) LyondellBasell · 2026-08 · tds
  36. US 5,278,282 Polymer recycling by selective dissolution — xylene dissolution temperatures Nauman & Lynch, Rensselaer Polytechnic Institute · 1994-01 · paper
  37. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  38. 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