3D Printing Info

Filament comparison

PETG-CF vs PPS

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

Carbon-fibre PETG (PETG-CF) guidePPS guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PETG-CF comparisonsMore PPS comparisons
PETG-CF vs PPS — documented properties and sources
PropertyCarbon-fibre PETG (PETG-CF)PETGPPSHIGHTEMP
Market snapshot
Listing priceUSD/kg; dated snapshots$29.99/kg median; $16.00–$74.22/kg across 11 dated product listings$116.97/kg median; $84.00–$200.00/kg across 3 dated product listings
Identity & Market
Base polymer / chemistryPETG reinforced with chopped carbon fibre[1][2]Polyphenylene sulfide — a semi-crystalline high-temperature polymer[3][4]
Densityg/cm³1.25 (Bambu Lab) to 1.34 (3DXTech), ISO 1183; Prusament 1.27[1][5][2]1.28 (ISO 1183, 3DXTech) and 1.33 (ISO 1183, Spectrum PPS AM230)[3][6]
Typical priceUSD/kg1 kg-equivalent spools span 16–74; the middle of the market is about 29[1][7][8][9][10][11][12][13]1 kg-equivalent spools span 84–200; the middle of the market is about 117[14][15][16]
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[17][1][14][7][8][9][10][11][12][13]84-200 across brands and diameters; IEMAI 3D 84 at 1 kg, Spectrum PPS AM230 117 at 750 g, 3DXTech ThermaX PPS 140 at 2.85 mm and 200 at 1.75 mm[14][15][16]
Market availability1–5Stocked by most mainstream brands[1][14][7][17]Niche, a handful of specialist brands[14][15]
Spool sizes & diameters1.75 and 2.85 mm; 0.75 and 1 kg spools[14][1]1.75 and 2.85 mm; 500 g and 750 g spools[14][15]
Typical applicationsStiff functional parts and fixtures where PETG's toughness is traded for rigidity and a matte finish[1][2]Chemical-plant and under-bonnet parts needing solvent resistance above 200 °C[4]
Diameter tolerance± mm±0.02 (Prusament)[2]Not documented
Printing Parameters
Nozzle temperature°C240–270 (Bambu Lab); 265 ± 10 (Prusament)[1][2]335-345 (3DXTech printed-specimen conditions); 300-330 (Spectrum)[3][6]
Bed temperature°C65–75 (Bambu Lab); 90 ± 10 (Prusament)[1][2]110-130 (3DXTech); 100-120 (Spectrum)[3][6]
Enclosure / chamber requirement1–5Open frame fine; draught shield helps — Bambu Lab specifies a 35–50 °C chamber[1]Actively heated chamber required[18][19]
Recommended chamber temperature°C35–50 (Bambu Lab)[1]60-80 actively heated (Spectrum PPS AM230)[6]
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]Adhesive required — Spectrum specifies Magigoo Pro HT[6]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s11.5 on My Tech Fun's Bambu Lab PETG-CF profile[20]Not documented
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][21]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[1]Expert / industrial hardware only[18][19]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[1]Brass fine indefinitely for unfilled grades, but brass softens near these nozzle temperatures — hardened or plated hot ends are the norm[18]
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[22][23]Moderate — needs dry filament and a clean nozzle; 3DXTech lists no special nozzle concerns but a mandatory 110 °C pre-dry before every print[24]
Heat-creep / jam sensitivity1–5Slightly sensitive[21]Not documented
Hotend requirementHardened steel nozzle; no high-temperature hot-end needed[1][21]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Low — 0.30 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Negligible (<0.1 % EMC) — Polymaker states minimal water absorption at 0.05 %[4]
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]0.01 in 24 h on extruded stock (ASTM D570) — effectively non-absorbing[25]
Drying temperature & time65 °C for 8 h (Bambu Lab)[1]At least 3 h at 90 °C in hot dry air if the filament has taken up moisture (Spectrum)[6]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[26]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][26]Little to measure — equilibrium uptake is 0.05 %; 3DXTech still specifies a 110 °C, 4 h pre-dry before printing[4][24]
Storage requirementSealed with desiccant; Bambu Lab says store dry after use[1][26]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]50 at break (printed XY, ISO 527, 3DXTech); 65 at break injection-moulded (ISO 527, Spectrum); 94 at yield on extruded stock (ASTM D638)[3][6][25]
Young's modulusMPa2460 ± 230 (Bambu Lab) and 1700 (Prusament) printed XY, ISO 527[1][2]2650 (printed XY, ISO 527, 3DXTech); 3650 injection-moulded (ISO 527, Spectrum); 5769 on extruded stock (ASTM D638)[3][6][25]
Elongation at break%4.3 at yield (Prusament, printed XY, ISO 527); 3 at break for 3DXTech[2][5]18 at break (printed XY, ISO 527, 3DXTech) against 2.0 injection-moulded (Spectrum) and 2.5 on extruded stock — the suppliers disagree by nearly an order of magnitude[3][6][25]
Flexural strengthMPa68 ± 3 printed horizontal, ISO 178 (Prusament)[2]52 (printed XY, ISO 178, 3DXTech); 141 on extruded stock (ASTM D790)[3][25]
Flexural modulusMPa2300 printed horizontal, 3100 printed vertical, ISO 178 (Prusament)[2]2540 (printed XY, ISO 178)[3]
Charpy impact, notchedkJ/m²Not documented1.3 notched injection-moulded (ISO 179-1eA, Spectrum); unnotched 18[6]
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][20]Izod notched 33 J/m on extruded PPS stock, converted from 0.62 ft-lb/in (ASTM D256)[25]
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][20]Not documented
Brittleness1–5Brittle — snaps with little warning[5]Moderate[3]
Hardness (scale-specific)Shore A / Shore D / Rockwell77 Shore D (Prusa Polymers method)[2]Rockwell 105 (and R124) on extruded PPS stock (ASTM D785)[25]
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[20]Excellent — holds load for years. Ensinger lists high creep resistance as a headline property of extruded PPS stock, and Spectrum states that rigidity, strength and creep resistance are unchanged under continuous load at high temperature[25][6]
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[27]Not documented
Elasticity / flexibility1–5Rigid[1]Rigid[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]90 (printed XY, ISO 75 at 0.45 MPa, 3DXTech); 129 injection-moulded (ISO 75, Spectrum); 204 on extruded stock (ASTM D648 at 66 psi)[3][6][25]
HDT at 1.8 MPa°C68 (Bambu Lab) and 80 (Prusament), ISO 75 at 1.8 MPa[1][2]107 injection-moulded (ISO 75 at 1.81 MPa, Spectrum); 104 on extruded stock (ASTM D648 at 264 psi)[6][25]
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]283 melting (ISO 11357, 3DXTech) and 280 on extruded stock; Vicat softening 236 at 50 N injection-moulded (ISO 306, Spectrum)[3][6][25]
Continuous service temperature°C77 — loaded bars begin to move at this temperature, against 61 for Bambu Lab PETG Basic[20]170 long-term service on extruded PPS stock, converted from 338 °F[25]
Thermal expansion (CTE)µm/m·KNot documented59.4 (extruded PPS stock, 22-60 °C, ASTM D696; source states 3.3e-5 in/in/°F)[25]
Flammability / UL 94Flammable; no UL 94 rating published[1]UL 94 V-0 at 1.5 mm, rated on the base resin[3]
Environment & Chemical
UV resistance1–5Moderate — a season or two; the carbon fibre does not add UV stabilisation[28]Not documented
Chemical resistanceWithstands acids, alkalis, oils and UV exposure, as for unfilled PETG[28]Outstanding — PPS resists essentially all solvents below 200 °C[4]
Water / humidity resistance in service1–5Not documentedExcellent — essentially unaffected; extruded stock takes up 0.01 % water in 24 h[25]
Food contactNot certified for food contact[28]Not documented
Biodegradability / compostabilityNot biodegradable[28]Not documented
RecyclabilityFibre-filled PETG is not accepted in household plastic collection[28]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[29]Moderate — measurable VOCs and UFPs, ventilation advised. None of these polymers was in the chamber study, and all are processed far above the temperatures it covered[29]
Ventilation / filtration requirement1–5Open a window / occasional ventilation[29]Ventilated room or enclosure recommended[29]
Dust & fibre handling hazardCarbon fibre is bound in the matrix; sanding dust should not be inhaled[5]Not documented
Post-Processing
Sanding & machiningSands to a matte finish more readily than unfilled PETG[21]Not documented
Gluing & solvent weldingCyanoacrylate; no common solvent welds it[21]Not documented
Vapour / chemical smoothingNo practical vapour smoothing[21]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]Not documented
Solvents & Solubility
Soluble inNo common workshop solvent; dichloromethane — a carcinogen — dissolves the matrix surface, 1,2-dichloroethane destroys it in a week.[30][31]None — PPS does not dissolve in any known solvent below 200 °C.[32][33]
Softened or crazed byAcetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[30]Nothing at 23 °C; Ensinger rates it only conditionally resistant to benzene, dichloromethane, toluene and pyridine.[33]
Solvent welding & smoothing agentDichloromethane reaches only the resin, so the fibre is left standing proud of the surface. Controlled carcinogen.[31]None — no solvent welds or smooths PPS.[32]

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. ThermaX PPS Technical Data Sheet v3 3DXTech · 2026-08 · tds
  4. PPS — material basics Polymaker Wiki · 2026-08 · doc
  5. CarbonX Carbon Fiber PETG Technical Data Sheet 3DXTech · 2026-08 · tds
  6. Spectrum PPS AM230 Technical Data Sheet Spectrum Filaments · 2022-04 · tds
  7. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  8. SUNLU PETG-CF (PETG Carbon Fiber) 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  9. Fibreheart PETG-CF Pro Filament product page Siraya Tech · 2026-08 · vendor
  10. IEMAI CF-PETG 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  11. Reli3D Carbon Fiber PETG Filament 1.75 mm, 1 kg Reli3D (Amazon US) · 2026-08 · vendor
  12. PET-G CF15 Sakata 3D Filaments · 2026-08 · vendor
  13. Filament PM CFJet technical data sheet (TDS CFJet ENG.pdf) Filament PM (Plasty Mladec) · 2026-08 · tds
  14. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  15. Spectrum PPS AM230 Natural, 1.75 mm / 750 g 3DJAKE · 2026-08 · vendor
  16. IEMAI 3D PPS 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  17. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  18. Prusament PEI 1010 Technical Datasheet v1.0 Prusa Polymers · 2024-09 · tds
  19. Prusament PEI 1010 — material page Prusa Polymers · 2026-08 · doc
  20. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  21. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  22. CARBONX PETG+CF — product page (print recommendations) 3DXTech · 2026-08 · doc
  23. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  24. THERMAX PPS — product page (print recommendations) 3DXTech · 2026-08 · doc
  25. TECATRON natural (PPS) — stock shape properties Ensinger · 2026-08 · tds
  26. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  27. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  28. PETG — material basics Polymaker Wiki · 2026-08 · doc
  29. 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
  30. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  31. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  32. PPS (Polyphenylene sulfide) — Knowledge Base Prusa Research · 2026-08 · doc
  33. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds