3D Printing Info

Filament comparison

PETG-CF vs TPU 95A

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

Carbon-fibre PETG (PETG-CF) guideTPU 95A guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PETG-CF comparisonsMore TPU 95A comparisons
PETG-CF vs TPU 95A — documented properties and sources
PropertyCarbon-fibre PETG (PETG-CF)PETGTPU 95AFLEX
Market snapshot
Listing priceUSD/kg; dated snapshots$29.99/kg median; $16.00–$74.22/kg across 11 dated product listings$39.99/kg median; $23.00–$106.05/kg across 15 dated product listings
Identity & Market
Base polymer / chemistryPETG reinforced with chopped carbon fibre[1][2]Thermoplastic polyurethane, polyester or polyether based, at about 92–95 Shore A[3][4]
Densityg/cm³1.25 (Bambu Lab) to 1.34 (3DXTech), ISO 1183; Prusament 1.27[1][5][2]1.20–1.25 (ISO 1183); Prusament 1.25, Polymaker 1.20–1.24, Bambu Lab 1.22[3][4][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 spools cluster near 35; the specialist and industrial brands run to 106[14][7][6][15][16][17]
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[18][1][19][7][8][9][10][11][12][13]23–106 across brands; IEMAI 3D 23, LANDU 24, Siraya Tech 25, PS Imports 25, PrimaCreator 32, Bambu Lab 35–42, Polymaker 40–50, add:north 72, Recreus 90, 3DXTech 96, NinjaTek Cheetah 106[7][20][14][19][15][16][21][22][23][17]
Market availability1–5Stocked by most mainstream brands[1][19][7][18]Ubiquitous, every brand and retailer[14][19][7][20][15][16]
Spool sizes & diameters1.75 and 2.85 mm; 0.75 and 1 kg spools[19][1]1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[14][19]
Typical applicationsStiff functional parts and fixtures where PETG's toughness is traded for rigidity and a matte finish[1][2]Gaskets, phone cases, tyres, vibration mounts and protective covers[24]
Diameter tolerance± mm±0.02 (Prusament)[2]±0.06 (Prusament) — the loosest tolerance Prusa publishes, because soft filament deforms in the gauge[4]
Printing Parameters
Nozzle temperature°C240–270 (Bambu Lab); 265 ± 10 (Prusament)[1][2]210–240; Polymaker 210–230, Prusament 230 ± 10, Bambu Lab HF 220–240[3][4][6]
Bed temperature°C65–75 (Bambu Lab); 90 ± 10 (Prusament)[1][2]25–65; Prusament 65 ± 10, Bambu Lab 30–35, Polymaker 25–60[4][6][3]
Enclosure / chamber requirement1–5Open frame fine; draught shield helps — Bambu Lab specifies a 35–50 °C chamber[1]Open frame is fine[3]
Recommended chamber temperature°C35–50 (Bambu Lab)[1]Not documented
Part cooling fan0–60 % (Bambu Lab); 50 % (Prusament)[1][2]Fan on[3][6]
Bed surface & adhesion aidTextured PEI or engineering plate with glue (Bambu Lab)[1]PEI sheet or painter's tape; Polymaker warns TPU can over-stick and advises a glue stick as a release agent[25][24]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s11.5 on My Tech Fun's Bambu Lab PETG-CF profile[26]2.4 at Polymaker's 30–50 mm/s and 2.4 at Prusa's 30 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer; Bambu Lab's high-flow grade lifts the cap to 200 mm/s (16 mm³/s)[3][4][6]
Warping tendency1–5Not documentedNone[3]
Bed-adhesion difficulty1–5Needs the right surface or a thin adhesive[1]Sticks to most surfaces[3]
Stringing / oozing tendency1–5Slight — the fibre reduces stringing against unfilled PETG[1][27]Moderate — retraction tuning needed; Polymaker specifies 3–6 mm retraction, well above the 1–3 mm used for rigid filaments[3]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[1]Intermediate — dry filament and a tuned profile; the speed ceiling is the main constraint[3][4]
Extruder requirementNot documentedDirect drive strongly preferred. BASF rates its 95A grade as running on both direct-drive and Bowden machines, but every maker caps speed at 15–50 mm/s unless the grade is specifically high-flow[28][3][4]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[1]Brass fine indefinitely[29]
Abrasiveness1–5Highly abrasive — standard CF composite[1]Non-abrasive[29]
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[30][31]Moderate — needs dry filament and a clean nozzle[32]
Heat-creep / jam sensitivity1–5Slightly sensitive[27]High — all-metal hotend and strong cooling needed; soft filament buckles in the cold zone if it slows[24]
Hotend requirementHardened steel nozzle; no high-temperature hot-end needed[1][27]No special hot-end required, but a direct-drive extruder is (Simplify3D)[25]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Low — 0.30 % saturated at 25 °C / 55 % RH (Bambu Lab)[1]Low (0.1–0.3 %) by Prusa's measurement at 0.04 % in 7 days, but Polymaker measures 0.82 % equilibrium and groups TPU with the highly hygroscopic materials[4][3][32]
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]0.82 equilibrium (Polymaker); 0.02 after 24 h and 0.04 after 7 days at 22 % RH (Prusa)[3][4]
Drying temperature & time65 °C for 8 h (Bambu Lab)[1]70 °C for 8 h (Polymaker); 70 °C for 8 h or an 80–90 °C heatbed for 12 h (Bambu Lab)[3][6]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[32]Bubbling and popping at the nozzle, stringing, rough surface and weak layers[32]
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][32]Polymaker groups TPU with nylon, PVA and PETG as highly hygroscopic and says these often need to stay in a dryer while printing; no dry-versus-conditioned figures are published[32]
Storage requirementSealed with desiccant; Bambu Lab says store dry after use[1][32]Sealed with desiccant; often kept in a dryer during the print[32]
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]41.4 ± 1.3 printed (Prusament, ISO 37); NinjaTek Cheetah 39 ultimate (ASTM D638)[4][33]
Young's modulusMPa2460 ± 230 (Bambu Lab) and 1700 (Prusament) printed XY, ISO 527[1][2]Not documented
Elongation at break%4.3 at yield (Prusament, printed XY, ISO 527); 3 at break for 3DXTech[2][5]551 ± 24 printed (Polymaker, ISO 37); the filament itself stretches 7264 % before break (Prusa, ISO 527)[3][4]
Flexural strengthMPa68 ± 3 printed horizontal, ISO 178 (Prusament)[2]Not documented
Flexural modulusMPa2300 printed horizontal, 3100 printed vertical, ISO 178 (Prusament)[2]Not documented
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][26]Not documented
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][26]9.5 ± 0.2 (Prusament interlayer adhesion, ISO 527)[4]
Brittleness1–5Brittle — snaps with little warning[5]Very ductile — bends far before failing[3][4]
Hardness (scale-specific)Shore A / Shore D / Rockwell77 Shore D (Prusa Polymers method)[2]92 ± 0.4 Shore A and 39 ± 0.7 Shore D (Prusament); 95A (Polymaker, ISO 7619-1); 91 Shore A / 40 Shore D (Fiberlogy FiberFlex 40D, ISO 7619); 95A (NinjaTek Cheetah, ASTM D2240); 94.5 A measured on a printed Bambu Lab 95A part and 96.2 A on a Qidi one (My Tech Fun)[4][3][34][33][35]
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[26]Poor — deforms under load at room temperature; a loaded bar crept from 74.5 to 82.7 mm over 5 days[35]
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[36]Excellent — living hinges viable[24]
Elasticity / flexibility1–5Rigid[1]Rubbery / highly elastic[3][4]
Z strength as % of XY%83 (Bambu Lab, printed Z against XY tensile)[1]Not documented
Wear resistance & frictionNot documentedAbrasion resistance is a headline property; BASF measures 64 mm³ loss by ISO 4649 on its 92A grade[28]
Thermal Properties
HDT at 0.45 MPa°C74 (Bambu Lab) and 96 (Prusament), ISO 75 at 0.45 MPa[1][2]Not documented
HDT at 1.8 MPa°C68 (Bambu Lab) and 80 (Prusament), ISO 75 at 1.8 MPa[1][2]Not documented
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]144 melting (BASF 95A, ISO 11357-3); Bambu Lab 183, Polymaker's modulus at 100 % elongation 8.9 MPa[28][6]
Continuous service temperature°C77 — loaded bars begin to move at this temperature, against 61 for Bambu Lab PETG Basic[26]Bounded by a melting point of 144–183 °C; no loaded-bar service figure is published for TPU[28][6]
Flammability / UL 94Flammable; no UL 94 rating published[1]Flammable; no UL 94 rating published for the grades surveyed[3]
Environment & Chemical
UV resistance1–5Moderate — a season or two; the carbon fibre does not add UV stabilisation[37]Good — years with some colour shift; Polymaker lists UV exposure among the conditions TPU withstands[24]
Chemical resistanceWithstands acids, alkalis, oils and UV exposure, as for unfilled PETG[37]Good resistance to oils and common solvents (BASF)[28]
Food contactNot certified for food contact[37]Not food safe without specific certification (Polymaker)[24]
Biodegradability / compostabilityNot biodegradable[37]Not biodegradable[24]
RecyclabilityFibre-filled PETG is not accepted in household plastic collection[37]Not accepted in household plastic collection[24]
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[38]Low hazard — minimal VOC and particle emission; TPU was not among the nine filaments in the chamber study[38]
Ventilation / filtration requirement1–5Open a window / occasional ventilation[38]Open a window / occasional ventilation[38]
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[27]Sanding is impractical — the surface tears rather than abrades[24]
Gluing & solvent weldingCyanoacrylate; no common solvent welds it[27]Cyanoacrylate bonds TPU; no common solvent welds it[24]
Vapour / chemical smoothingNo practical vapour smoothing[27]No practical vapour smoothing[24]
Support material pairingSupport for PLA or its own material (Bambu Lab)[1]Polymaker warns TPU supports are often very difficult to remove; PolyDissolve S1 is rated for TPU[24]
Dimensional accuracy & detailMatte finish hides layer lines; stringing is reduced against unfilled PETG[1]Stringing and elephant-foot are the accuracy limits; retraction has to be long and slow[3]
Solvents & Solubility
Soluble inNo common workshop solvent; dichloromethane — a carcinogen — dissolves the matrix surface, 1,2-dichloroethane destroys it in a week.[39][40]DMF, DMSO, NMP and THF dissolve TPU; acetone, MEK and cyclohexanone are partial solvents. All laboratory reagents.[41]
Softened or crazed byAcetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[39]Toluene and benzene swell it up to +50 % by weight at 23 °C; esters swell it severely; ethanol and IPA soften it.[41]
Solvent welding & smoothing agentDichloromethane reaches only the resin, so the fibre is left standing proud of the surface. Controlled carcinogen.[40]None practical — the true solvents (DMF, THF, NMP) are laboratory reagents and leave the joint swollen and weak.[41]

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. PolyFlex TPU95 Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  4. Prusament TPU 95A Technical Datasheet v1.0 Prusa Polymers · 2025-05 · tds
  5. CarbonX Carbon Fiber PETG Technical Data Sheet 3DXTech · 2026-08 · tds
  6. Bambu Filament Technical Data Sheet — TPU 95A HF Bambu Lab · 2026-08 · 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. Polymaker product catalogue Polymaker · 2026-08 · vendor
  15. LANDU TPU 3D Printer Filament 1.75 mm 95A Black 1 kg — Amazon listing Amazon.com · 2026-08 · vendor
  16. IEMAI 3D TPU 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  17. Cheetah product page — print guidelines, spool sizes and price NinjaTek · 2026-08 · vendor
  18. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  19. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  20. TPU for AMS — product page Bambu Lab US Store · 2026-08 · vendor
  21. Siraya Tech Flex TPU 95A Filament — product page Siraya Tech · 2026-08 · vendor
  22. PrimaCreator EasyPrint FLEX TPU 95A product page PrimaCreator · 2026-08 · vendor
  23. add:north TPU Pro Matte 95A product page add:north · 2026-08 · vendor
  24. TPU — material basics Polymaker Wiki · 2026-08 · doc
  25. Flexible (TPE/TPU) — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  26. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  27. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  28. Ultrafuse TPU 95A Technical Data Sheet (Version 2.0) BASF Forward AM · 2022-08 · tds
  29. Extrudr Product Catalogue (DURAPRO PA12 data block) Extrudr · 2025-03 · tds
  30. CARBONX PETG+CF — product page (print recommendations) 3DXTech · 2026-08 · doc
  31. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  32. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  33. NinjaTek technical specs comparison chart (Cheetah, NinjaFlex, Armadillo, Alloy 910, Nylon 645) NinjaTek · 2026-08 · tds
  34. FiberFlex 40D Technical Data Sheet Fiberlogy · 2026-08 · tds
  35. BambuLab TPU 95A HF vs Qidi TPU 95A HF — results spreadsheet My Tech Fun (Igor Gaspar) · 2024-02 · test
  36. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  37. PETG — material basics Polymaker Wiki · 2026-08 · doc
  38. 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
  39. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  40. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  41. Elastollan — Chemical properties: swelling and chemical resistance BASF · 2026-08 · tds