3D Printing Info

Filament comparison

PETG-CF vs PVDF

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

Carbon-fibre PETG (PETG-CF) guidePVDF guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PETG-CF comparisonsMore PVDF comparisons
PETG-CF vs PVDF — documented properties and sources
PropertyCarbon-fibre PETG (PETG-CF)PETGPVDFENGINEERING
Market snapshot
Listing priceUSD/kg; dated snapshots$29.99/kg median; $16.00–$74.22/kg across 11 dated product listings$250.67/kg median; $250.67–$250.67/kg across 1 dated product listings
Identity & Market
Base polymer / chemistryPETG reinforced with chopped carbon fibre[1][2]Polyvinylidene fluoride — a semi-crystalline fluoropolymer[3][4]
Densityg/cm³1.25 (Bambu Lab) to 1.34 (3DXTech), ISO 1183; Prusament 1.27[1][5][2]1.71 (ISO 1183) — the densest unfilled filament in the dataset[3]
Typical priceUSD/kg1 kg-equivalent spools span 16–74; the middle of the market is about 29[1][6][7][8][9][10][11][12]1 kg-equivalent spools cluster near 251[13]
Price range across brandsUSD/kg16–74 across brands; ELEGOO 16 in a 5 kg pack, Reli3D 17, SUNLU 20, IEMAI 22, Siraya Tech 25, Bambu Lab 32, Sakata 3D 53, 3DXTech 67, Prusament 70, Filament PM 74 on 0.5 kg spools[14][1][13][6][7][8][9][10][11][12]251 at 3DXTech's 750 g pricing — the most expensive material in the whole dataset[13]
Market availability1–5Stocked by most mainstream brands[1][13][6][14]Special order, 1–2 makers worldwide[13][15]
Spool sizes & diameters1.75 and 2.85 mm; 0.75 and 1 kg spools[13][1]1.75 and 2.85 mm; 750 g spools[13]
Typical applicationsStiff functional parts and fixtures where PETG's toughness is traded for rigidity and a matte finish[1][2]Chemical-plant fittings, semiconductor handling and parts needing outstanding UV and chemical resistance[3]
Diameter tolerance± mm±0.02 (Prusament)[2]Not documented
Printing Parameters
Nozzle temperature°C240–270 (Bambu Lab); 265 ± 10 (Prusament)[1][2]Not documented
Bed temperature°C65–75 (Bambu Lab); 90 ± 10 (Prusament)[1][2]70–110 (3DXTech FluorX)[3]
Enclosure / chamber requirement1–5Open frame fine; draught shield helps — Bambu Lab specifies a 35–50 °C chamber[1]Enclosure required (passive)[3]
Recommended chamber temperature°C35–50 (Bambu Lab)[1]Not documented
Part cooling fan0–60 % (Bambu Lab); 50 % (Prusament)[1][2]Not documented
Bed surface & adhesion aidTextured PEI or engineering plate with glue (Bambu Lab)[1]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s11.5 on My Tech Fun's Bambu Lab PETG-CF profile[16]Not documented
Warping tendency1–5Not documentedHigh — enclosure needed for reliable large parts[3]
Bed-adhesion difficulty1–5Needs the right surface or a thin adhesive[1]Not documented
Stringing / oozing tendency1–5Slight — the fibre reduces stringing against unfilled PETG[1][17]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[1]Expert / industrial hardware only[3][4]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[1]Brass fine indefinitely for unfilled grades[3]
Abrasiveness1–5Highly abrasive — standard CF composite[1]Non-abrasive when unfilled[3]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; 3DXTech specifies a hardened 0.4 mm minimum nozzle and 0.25 mm layers or higher, and Prusa lists composites as a higher clogging risk[18][19]Low — 3DXTech lists no special nozzle concerns, no minimum layer height and states drying is not required[15]
Heat-creep / jam sensitivity1–5Slightly sensitive[17]Not documented
Hotend requirementHardened steel nozzle; no high-temperature hot-end needed[1][17]Not documented
Other hardware wearNot documentedHydrogen fluoride released on overheating is extremely corrosive and will attack hotend and enclosure metalwork as well as people[4]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Low — 0.30 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Negligible (<0.1 % EMC) — fluoropolymers are essentially non-hygroscopic[3]
Equilibrium moisture content at ~50 % RH%0.30 saturated at 25 °C / 55 % RH (Bambu Lab); Prusa measures 0.10 after 7 days at 22 % RH[1][2]Not documented
Drying temperature & time65 °C for 8 h (Bambu Lab)[1]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[20]Not documented
Effect of moisture on strengthNo dry-versus-conditioned figures published; Bambu Lab states PETG-CF must be properly dried before printing and stored dry after use[1][20]Not applicable in practice — 3DXTech states drying is not required for PVDF, so there is no moisture-driven strength loss to measure[15]
Storage requirementSealed with desiccant; Bambu Lab says store dry after use[1][20]Not documented
Mechanical Properties
Tensile strength (XY)MPa35 ± 5 (Bambu Lab) and 47 ± 2 at yield (Prusament) printed XY, ISO 527; 56 at break for 3DXTech[1][2][5]51 at break (printed XY, ISO 527)[3]
Young's modulusMPa2460 ± 230 (Bambu Lab) and 1700 (Prusament) printed XY, ISO 527[1][2]2450 (printed XY, ISO 527)[3]
Elongation at break%4.3 at yield (Prusament, printed XY, ISO 527); 3 at break for 3DXTech[2][5]25 at break (printed XY, ISO 527)[3]
Flexural strengthMPa68 ± 3 printed horizontal, ISO 178 (Prusament)[2]50 (printed XY, ISO 178)[3]
Flexural modulusMPa2300 printed horizontal, 3100 printed vertical, ISO 178 (Prusament)[2]1800 (printed XY, ISO 178)[3]
Other impact dataCharpy unnotched 29 ± 6 printed horizontal and 43 ± 8 printed vertical (Prusament, ISO 179-1); Izod 4.91 kJ/m² on My Tech Fun bars[2][16]Izod 133 J/m on extruded PVDF stock, converted from 2.49 ft-lb/in (ASTM D256)[21]
Layer adhesion / Z tensileMPa29 ± 4 printed Z (Bambu Lab, ISO 527); 18 ± 3 by Prusa's interlayer adhesion test; 10.7 on My Tech Fun bars[1][2][16]Not documented
Brittleness1–5Brittle — snaps with little warning[5]Tough — absorbs impact, yields before breaking[3]
Hardness (scale-specific)Shore A / Shore D / Rockwell77 Shore D (Prusa Polymers method)[2]Rockwell M79 on extruded PVDF stock (ASTM D785)[21]
Creep resistance / sustained load1–5Below average — a 12 mm bar sagged to 16.4 mm over 5 days at 1.25 kg, less than plain PETG's 19.4[16]Not documented
Fatigue / repeated-flex resistance1–5Moderate — no CF-grade S-N curve; unfilled printed PETG ran 79 000–193 000 cycles at 30 % of tensile strength[22]Not documented
Elasticity / flexibility1–5Rigid[1]Slightly flexible in thin sections[3]
Z strength as % of XY%83 (Bambu Lab, printed Z against XY tensile)[1]Not documented
Thermal Properties
HDT at 0.45 MPa°C74 (Bambu Lab) and 96 (Prusament), ISO 75 at 0.45 MPa[1][2]149 on extruded PVDF stock (ASTM D648 at 66 psi; converted from 300 °F)[21]
HDT at 1.8 MPa°C68 (Bambu Lab) and 80 (Prusament), ISO 75 at 1.8 MPa[1][2]113 on extruded PVDF stock (ASTM D648 at 264 psi; converted from 235 °F)[21]
Glass transition (Tg)°C68 (Bambu Lab) and 80 (3DXTech), DSC[1][5]Not documented
Melting point / Vicat°C225 melting (Bambu Lab, DSC) — the carbon fibre lets the PET fraction crystallise[1]170 melting (ISO 11357)[3]
Continuous service temperature°C77 — loaded bars begin to move at this temperature, against 61 for Bambu Lab PETG Basic[16]149 long term and short term on extruded PVDF stock (converted from 300 °F)[21]
Thermal expansion (CTE)µm/m·KNot documented127.8 (extruded PVDF stock, ASTM D696; source states 7.1e-5 in/in/°F) — the highest thermal expansion of any engineering polymer in this dataset[21]
Flammability / UL 94Flammable; no UL 94 rating published[1]UL 94 V-0 on extruded PVDF stock; Ensinger lists inherent flame resistance[21]
Environment & Chemical
UV resistance1–5Moderate — a season or two; the carbon fibre does not add UV stabilisation[23]Excellent — designed for permanent outdoor use; Ensinger lists good UV and weather resistance and high gamma radiation resistance for PVDF stock[3][21]
Chemical resistanceWithstands acids, alkalis, oils and UV exposure, as for unfilled PETG[23]Outstanding — resistant to most acids, solvents and oxidising agents, which is the reason to use it[3]
Water / humidity resistance in service1–5Not documentedExcellent — essentially unaffected[3]
Food contactNot certified for food contact[23]Not documented
Biodegradability / compostabilityNot biodegradable[23]Not documented
RecyclabilityFibre-filled PETG is not accepted in household plastic collection[23]Not documented
Electrical & ESD propertiesSurface resistance above 10⁹ ohm/sq — carbon fibre at this loading is not static-dissipative (3DXTech)[5]Not documented
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[24]Very high — toxic decomposition products; local exhaust mandatory. Above 315 °C thermal decomposition yields hydrofluoric acid, hydrogen cyanide and carbon monoxide[4]
Hazardous species emittedNot documentedAbove 315 °C: hydrofluoric acid, hydrogen cyanide, phenols, carbon monoxide, carbon dioxide and dense smoke. HF is extremely corrosive, its skin burns may not be immediately visible or painful, and exposure can be fatal by skin absorption, inhalation or ingestion[4]
Ventilation / filtration requirement1–5Open a window / occasional ventilation[24]Local exhaust to outside / fume hood — the SDS states local exhaust is preferred[4]
Dust & fibre handling hazardCarbon fibre is bound in the matrix; sanding dust should not be inhaled[5]Molten polymer causes thermal burns and must not be pulled off the skin. If HF is detected during a decomposition event, cut the heat but keep the extraction running, ventilate, and clear non-essential people from the area[4]
Post-Processing
Sanding & machiningSands to a matte finish more readily than unfilled PETG[17]Not documented
Gluing & solvent weldingCyanoacrylate; no common solvent welds it[17]Not documented
Vapour / chemical smoothingNo practical vapour smoothing[17]Not documented
Support material pairingSupport for PLA or its own material (Bambu Lab)[1]Not documented
Dimensional accuracy & detailMatte finish hides layer lines; stringing is reduced against unfilled PETG[1]The processing window sits well below the 315 °C decomposition threshold, so nozzle temperature must be controlled rather than raised to chase flow[3][4]
Solvents & Solubility
Soluble inNo common workshop solvent; dichloromethane — a carcinogen — dissolves the matrix surface, 1,2-dichloroethane destroys it in a week.[25][26]THF, MEK, DMF, DMAc, NMP, DMSO and trimethyl phosphate dissolve 5–10 wt% at ambient — Arkema's active solvents, all lab reagents.[27]
Softened or crazed byAcetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[25]Acetone, MIBK, cyclohexanone, butyl acetate and glycol ethers swell it; alkalis above pH 12 attack the homopolymer.[27][28]
Solvent welding & smoothing agentDichloromethane reaches only the resin, so the fibre is left standing proud of the surface. Controlled carcinogen.[26]None for the workshop — the active solvents (NMP, DMAc, DMF) are laboratory reagents used for casting membranes, not joints.[27]

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 — PETG-CF Bambu Lab · 2026-08 · tds
  2. Prusament PETG Carbon Fiber Technical Datasheet Prusa Polymers · 2026-08 · tds
  3. FluorX PVDF Technical Data Sheet v3 3DXTech · 2026-08 · tds
  4. FluorX PVDF Safety Data Sheet v1.1 3DXTech · 2026-08 · msds
  5. CarbonX Carbon Fiber PETG Technical Data Sheet 3DXTech · 2026-08 · tds
  6. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  7. SUNLU PETG-CF (PETG Carbon Fiber) 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  8. Fibreheart PETG-CF Pro Filament product page Siraya Tech · 2026-08 · vendor
  9. IEMAI CF-PETG 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  10. Reli3D Carbon Fiber PETG Filament 1.75 mm, 1 kg Reli3D (Amazon US) · 2026-08 · vendor
  11. PET-G CF15 Sakata 3D Filaments · 2026-08 · vendor
  12. Filament PM CFJet technical data sheet (TDS CFJet ENG.pdf) Filament PM (Plasty Mladec) · 2026-08 · tds
  13. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  14. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  15. FluorX PVDF — product page 3DXTech · 2026-08 · vendor
  16. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  17. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  18. CARBONX PETG+CF — product page (print recommendations) 3DXTech · 2026-08 · doc
  19. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  20. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  21. TECAFLON PVDF natural — stock shape properties Ensinger · 2026-08 · tds
  22. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  23. PETG — material basics Polymaker Wiki · 2026-08 · doc
  24. 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
  25. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  26. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  27. Kynar PVDF — Design properties: solubility and irradiation (active and latent solvents) Arkema · 2026-08 · tds
  28. Kynar PVDF resin — chemical and fuel resistance Arkema · 2026-08 · tds