3D Printing Info

Filament comparison

PETG-GF vs TPU 95A

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

Glass-fibre polyester (PETG-GF / PET-GF) guideTPU 95A guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PETG-GF comparisonsMore TPU 95A comparisons
PETG-GF vs TPU 95A — documented properties and sources
PropertyGlass-fibre polyester (PETG-GF / PET-GF)PETGTPU 95AFLEX
Market snapshot
Listing priceUSD/kg; dated snapshots$27.38/kg median; $18.99–$29.99/kg across 3 dated product listings$39.99/kg median; $23.00–$106.05/kg across 15 dated product listings
Identity & Market
Base polymer / chemistryGlass-fibre reinforced polyester. Polymaker's Fiberon PET-GF15 uses a PET rather than a PETG matrix and carries 15 wt% glass fibre[1]Thermoplastic polyurethane, polyester or polyether based, at about 92–95 Shore A[2][3]
Densityg/cm³1.43 (Fiberon PET-GF15, ISO 1183)[1]1.20–1.25 (ISO 1183); Prusament 1.25, Polymaker 1.20–1.24, Bambu Lab 1.22[2][3][4]
Typical priceUSD/kg1 kg spools cluster near 25[5][6]1 kg spools cluster near 35; the specialist and industrial brands run to 106[6][7][4][8][9][10]
Price range across brandsUSD/kg19–30 across brands; ELEGOO 19, Polymaker Fiberon 30[5][6]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][11][6][12][8][9][13][14][15][10]
Market availability1–5Niche, a handful of specialist brands[5][6]Ubiquitous, every brand and retailer[6][12][7][11][8][9]
Spool sizes & diameters1.75 mm; 0.5 and 1 kg spools[6]1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[6][12]
Typical applicationsStiff, dimensionally stable fixtures; the Fiberon grade is designed to be annealed for heat resistance[1]Gaskets, phone cases, tyres, vibration mounts and protective covers[16]
Diameter tolerance± mmNot documented±0.06 (Prusament) — the loosest tolerance Prusa publishes, because soft filament deforms in the gauge[3]
Printing Parameters
Nozzle temperature°CNot documented210–240; Polymaker 210–230, Prusament 230 ± 10, Bambu Lab HF 220–240[2][3][4]
Bed temperature°CNot documented25–65; Prusament 65 ± 10, Bambu Lab 30–35, Polymaker 25–60[3][4][2]
Enclosure / chamber requirement1–5Not documentedOpen frame is fine[2]
Part cooling fanNot documentedFan on[2][4]
Bed surface & adhesion aidTextured PEI, satin or powder-coated sheets; on smooth PEI a glue stick acts as a release agent[17][18]PEI sheet or painter's tape; Polymaker warns TPU can over-stick and advises a glue stick as a release agent[19][16]
Maximum volumetric flow (mm³/s; see test conditions)mm³/sNot documented2.4 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)[2][3][4]
Warping tendency1–5Not documentedNone[2]
Bed-adhesion difficulty1–5Needs the right surface or a thin adhesive — the problem is releasing the part, not sticking it[17][18]Sticks to most surfaces[2]
Stringing / oozing tendency1–5Moderate — retraction tuning needed; Polymaker names stringing as PETG's common quirk[18]Moderate — retraction tuning needed; Polymaker specifies 3–6 mm retraction, well above the 1–3 mm used for rigid filaments[2]
Overall printing difficulty1–5Not documentedIntermediate — dry filament and a tuned profile; the speed ceiling is the main constraint[2][3]
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[20][2][3]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[1]Brass fine indefinitely[21]
Abrasiveness1–5Highly abrasive — standard GF composite[1]Non-abrasive[21]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[22]Moderate — needs dry filament and a clean nozzle[23]
Heat-creep / jam sensitivity1–5Slightly sensitive[24]High — all-metal hotend and strong cooling needed; soft filament buckles in the cold zone if it slows[16]
Hotend requirementNo special hot-end required[24]No special hot-end required, but a direct-drive extruder is (Simplify3D)[19]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate (0.3–0.8 %) — the PETG matrix reaches 0.40 % saturated at 25 °C / 55 % RH; no glass-filled grade publishes its own figure[17]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[3][2][23]
Equilibrium moisture content at ~50 % RH%Not documented0.82 equilibrium (Polymaker); 0.02 after 24 h and 0.04 after 7 days at 22 % RH (Prusa)[2][3]
Drying temperature & timeNot documented70 °C for 8 h (Polymaker); 70 °C for 8 h or an 80–90 °C heatbed for 12 h (Bambu Lab)[2][4]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[23]Bubbling and popping at the nozzle, stringing, rough surface and weak layers[23]
Effect of moisture on strengthPolymaker groups PETG with nylon, PVA and TPU as highly hygroscopic; no dry-versus-conditioned strength figures are published for this grade and the loss shows as bubbling and poor layer adhesion[23]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[23]
Storage requirementSealed with desiccant; Polymaker groups PETG with the highly hygroscopic materials[23][18]Sealed with desiccant; often kept in a dryer during the print[23]
Mechanical Properties
Tensile strength (XY)MPa59.9 ± 0.8 printed XY, ISO 527 (Fiberon PET-GF15)[1]41.4 ± 1.3 printed (Prusament, ISO 37); NinjaTek Cheetah 39 ultimate (ASTM D638)[3][25]
Young's modulusMPa4144 ± 133 printed XY, ISO 527 (Fiberon PET-GF15)[1]Not documented
Elongation at break%4.0 ± 0.5 printed XY, ISO 527 (Fiberon PET-GF15)[1]551 ± 24 printed (Polymaker, ISO 37); the filament itself stretches 7264 % before break (Prusa, ISO 527)[2][3]
Flexural strengthMPa104.2 ± 2.4 printed XY, ISO 178 (Fiberon PET-GF15)[1]Not documented
Flexural modulusMPa3705 ± 85 printed XY, ISO 178 (Fiberon PET-GF15)[1]Not documented
Charpy impact, notchedkJ/m²8.7 ± 0.6 printed XY, ISO 179, notched (Fiberon PET-GF15)[1]Not documented
Other impact dataCharpy unnotched 27.2 ± 2.0 printed XY (Fiberon PET-GF15, ISO 179)[1]Not documented
Layer adhesion / Z tensileMPa48.2 ± 0.3 printed Z, ISO 527 (Fiberon PET-GF15)[1]9.5 ± 0.2 (Prusament interlayer adhesion, ISO 527)[3]
Brittleness1–5Brittle — snaps with little warning; elongation 4.0 % in XY and 2.6 % in Z[1]Very ductile — bends far before failing[2][3]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documented92 ± 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)[3][2][26][25][27]
Creep resistance / sustained load1–5Below average — no GF-grade creep test; the CF grades sagged to 14.8–16.7 mm over 5 days at 1.25 kg against 17.1–20.4 mm unfilled[28][29][30]Poor — deforms under load at room temperature; a loaded bar crept from 74.5 to 82.7 mm over 5 days[27]
Fatigue / repeated-flex resistance1–5Below average — no GF-grade S-N curve; elongation at break falls to 4.0 % in XY against 5.2–9.3 % unfilled[1][31]Excellent — living hinges viable[16]
Elasticity / flexibility1–5Rigid[1]Rubbery / highly elastic[2][3]
Z strength as % of XY%80 (Fiberon PET-GF15, 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[20]
Thermal Properties
HDT at 0.45 MPa°C81.6 as printed, 133.7 after annealing (ISO 75, 0.45 MPa)[1]Not documented
HDT at 1.8 MPa°C71.8 as printed, 87.3 after annealing (ISO 75, 1.8 MPa)[1]Not documented
Glass transition (Tg)°C59.5 (DSC)[1]Not documented
Melting point / Vicat°C231.6 melting (DSC); Vicat 232.6 (ISO 306)[1]144 melting (BASF 95A, ISO 11357-3); Bambu Lab 183, Polymaker's modulus at 100 % elongation 8.9 MPa[20][4]
Continuous service temperature°CNot documentedBounded by a melting point of 144–183 °C; no loaded-bar service figure is published for TPU[20][4]
Annealing responseAnnealing lifts HDT at 0.45 MPa from 81.6 to 133.7 °C[1]Not documented
Thermal expansion (CTE)µm/m·K20 along the print bead and 63–74 in the build direction at 30 °C (30 wt% GF, large-format printed, TMA)[32]Not documented
Flammability / UL 94UL 94 HB at 1.5 mm (Fiberon PET-GF15)[1]Flammable; no UL 94 rating published for the grades surveyed[2]
Environment & Chemical
UV resistance1–5Not documentedGood — years with some colour shift; Polymaker lists UV exposure among the conditions TPU withstands[16]
Chemical resistanceWithstands acids, alkalis, oils and UV exposure[18]Good resistance to oils and common solvents (BASF)[20]
Food contactNot certified for food contact as filament[18]Not food safe without specific certification (Polymaker)[16]
Biodegradability / compostabilityNot biodegradable[18]Not biodegradable[16]
RecyclabilityNot accepted in household plastic collection[18]Not accepted in household plastic collection[16]
Electrical & ESD propertiesSurface resistivity above 10¹² ohm — insulating (Fiberon PET-GF15, ANSI/ESD S11.11)[1]Not documented
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[33]Low hazard — minimal VOC and particle emission; TPU was not among the nine filaments in the chamber study[33]
Ventilation / filtration requirement1–5Open a window / occasional ventilation[33]Open a window / occasional ventilation[33]
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust[1]Not documented
Post-Processing
Sanding & machiningSands poorly — the material is tough and gums rather than powders[24]Sanding is impractical — the surface tears rather than abrades[16]
Gluing & solvent weldingCyanoacrylate; no common solvent welds PETG cleanly[24]Cyanoacrylate bonds TPU; no common solvent welds it[16]
Vapour / chemical smoothingNo practical vapour smoothing[24]No practical vapour smoothing[16]
Support material pairingPrints its own supports; Polymaker rates PolyDissolve S1 for PETG[24]Polymaker warns TPU supports are often very difficult to remove; PolyDissolve S1 is rated for TPU[16]
Dimensional accuracy & detailNot documentedStringing and elephant-foot are the accuracy limits; retraction has to be long and slow[2]
Solvents & Solubility
Soluble inNo common workshop solvent; dichloromethane — a carcinogen — dissolves the matrix surface, 1,2-dichloroethane destroys it in a week.[34][35]DMF, DMSO, NMP and THF dissolve TPU; acetone, MEK and cyclohexanone are partial solvents. All laboratory reagents.[36]
Softened or crazed byAcetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[34]Toluene and benzene swell it up to +50 % by weight at 23 °C; esters swell it severely; ethanol and IPA soften it.[36]
Solvent welding & smoothing agentDichloromethane reaches only the resin, so the fibre is left standing proud of the surface. Controlled carcinogen.[35]None practical — the true solvents (DMF, THF, NMP) are laboratory reagents and leave the joint swollen and weak.[36]

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. Fiberon PET-GF15 Technical Data Sheet V1.0 Polymaker · 2026-08 · tds
  2. PolyFlex TPU95 Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  3. Prusament TPU 95A Technical Datasheet v1.0 Prusa Polymers · 2025-05 · tds
  4. Bambu Filament Technical Data Sheet — TPU 95A HF Bambu Lab · 2026-08 · tds
  5. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  6. Polymaker product catalogue Polymaker · 2026-08 · vendor
  7. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  8. LANDU TPU 3D Printer Filament 1.75 mm 95A Black 1 kg — Amazon listing Amazon.com · 2026-08 · vendor
  9. IEMAI 3D TPU 3D Printing Filament — store page IEMAI 3D · 2026-08 · vendor
  10. Cheetah product page — print guidelines, spool sizes and price NinjaTek · 2026-08 · vendor
  11. TPU for AMS — product page Bambu Lab US Store · 2026-08 · vendor
  12. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  13. Siraya Tech Flex TPU 95A Filament — product page Siraya Tech · 2026-08 · vendor
  14. PrimaCreator EasyPrint FLEX TPU 95A product page PrimaCreator · 2026-08 · vendor
  15. add:north TPU Pro Matte 95A product page add:north · 2026-08 · vendor
  16. TPU — material basics Polymaker Wiki · 2026-08 · doc
  17. Prusament PETG Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  18. PETG — material basics Polymaker Wiki · 2026-08 · doc
  19. Flexible (TPE/TPU) — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  20. Ultrafuse TPU 95A Technical Data Sheet (Version 2.0) BASF Forward AM · 2022-08 · tds
  21. Extrudr Product Catalogue (DURAPRO PA12 data block) Extrudr · 2025-03 · tds
  22. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  23. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  24. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  25. NinjaTek technical specs comparison chart (Cheetah, NinjaFlex, Armadillo, Alloy 910, Nylon 645) NinjaTek · 2026-08 · tds
  26. FiberFlex 40D Technical Data Sheet Fiberlogy · 2026-08 · tds
  27. BambuLab TPU 95A HF vs Qidi TPU 95A HF — results spreadsheet My Tech Fun (Igor Gaspar) · 2024-02 · test
  28. Extrudr PETG vs PCTG vs XPETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  29. Prusament PETG-CF vs PETG V0 vs PETG — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  30. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  31. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  32. Effects of Fiber Orientation on the Coefficient of Thermal Expansion of Fiber-Filled Polymer Systems in Large Format Polymer Extrusion-Based Additive Manufacturing Materials 15(8):2764 · 2022-04 · paper
  33. 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
  34. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  35. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  36. Elastollan — Chemical properties: swelling and chemical resistance BASF · 2026-08 · tds