3D Printing Info

Filament comparison

PC-ESD vs TPU 85A

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

ESD-safe PC guideTPU 85A guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PC-ESD comparisonsMore TPU 85A comparisons
PC-ESD vs TPU 85A — documented properties and sources
PropertyESD-safe PCPCTPU 85AFLEX
Market snapshot
Listing priceUSD/kg; dated snapshots$180.00/kg median; $180.00–$180.00/kg across 1 dated product listings$89.89/kg median; $31.99–$106.05/kg across 6 dated product listings
Identity & Market
Base polymer / chemistryPolycarbonate compounded with a conductive filler for static-dissipative parts[1]Soft thermoplastic polyurethane at 82–85 Shore A[2][3][4]
Densityg/cm³1.24 (ISO 1183, 3DXTech); Stratasys specific gravity 1.195 (ASTM D792)[1][5]1.11 (BASF Ultrafuse 85A) to 1.19 (NinjaFlex 85A), ISO 1183 / ASTM D792[4][2]
Typical priceUSD/kg1 kg-equivalent spools cluster near 180[6]1 kg-equivalent spools span 32–106; the middle of the market is about 90[6][7][2]
Price range across brandsUSD/kg180 at 3DXTech's 750 g pricing — the most expensive material in this group[6]32–106 across brands; Siraya Tech Flex TPU 85A 32 at 1 kg, add:north TPU Pro Matte 85A 72, Recreus Filaflex 82A 90 at 500 g, Proto-pasta Clear Flexible TPU 90, 3DXTech 3DXFLEX 85A 96, NinjaTek NinjaFlex 106[8][6][7][9][2]
Market availability1–5Special order, 1–2 makers worldwide[6]Available from several mainstream brands[6][8]
Spool sizes & diameters1.75 and 2.85 mm; 750 g spools plus Stratasys-compatible cartridges[6]1.75, 2.85 and 3 mm; 0.5, 1 and 2 kg spools[6][8][2]
Typical applicationsElectronics fixtures and trays that need PC heat resistance and static dissipation together[1]Soft-touch grips, seals, wearables and anything that must compress and rebound[2][3]
Printing Parameters
Nozzle temperature°CNot documented200–220 (BASF Ultrafuse 85A, 210 typical)[4]
Bed temperature°CNot documented40 (BASF Ultrafuse 85A)[4]
Enclosure / chamber requirement1–5Enclosure required (passive)[10][11]Open frame is fine[4]
Bed surface & adhesion aidPEI with a glue stick or a commercial adhesive[12]PEI sheet or painter's tape; Polymaker warns TPU can over-stick and advises a glue stick as a release agent[13][14]
Maximum volumetric flow (mm³/s; see test conditions)mm³/sNot documented1.2–3.2 at the 15–40 mm/s BASF specifies on a 0.4 mm nozzle at 0.2 mm layer[4]
Warping tendency1–5Severe — heated chamber needed[10][11]None[4]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[12][15]Sticks to anything — Recreus states its 82A grade has excellent bed adhesion without a heated bed or additives[3]
Stringing / oozing tendency1–5Moderate — retraction tuning needed; Polymaker flags stringing as a common PC problem[15]High — drying plus tuning needed[16][14]
Overall printing difficulty1–5Advanced — enclosure, hardware upgrades, tuning[10]Advanced — enclosure, hardware upgrades, tuning; at this hardness the filament will not push through a Bowden tube[2][3]
Extruder requirementNot documentedDirect drive only. NinjaTek calls its 85A grade ideal for direct-drive extruders and Recreus specifies direct-drive printers for 82A; BASF caps print speed at 15–40 mm/s with a nozzle of 0.4 mm or larger[2][3][4]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[1]Brass fine indefinitely[17]
Abrasiveness1–5Moderately abrasive — conductive carbon filler[1]Non-abrasive[17]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; 3DXTech lists no special nozzle concerns but a 120 °C pre-dry[18]High — jams from moisture, heat creep or particles[16][14]
Heat-creep / jam sensitivity1–5Slightly sensitive[12]Very high — softens in the cold zone readily; soft filament buckles between the drive gear and the melt zone[14][2]
Hotend requirementAll-metal hot end required (Simplify3D)[12]No special hot-end required, but a direct-drive extruder is (Simplify3D)[13]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Low (0.1–0.3 %) — the PC matrix takes up 0.15–0.25 % and 3DXTech specifies a 120 °C, 4 h pre-dry[19][20][18]Moderate — NinjaTek measures 0.22 % in 24 h (ASTM D570) and BASF specifies a 70 °C dry for at least 5 h[2][4]
Equilibrium moisture content at ~50 % RH%Not documented0.22 after 24 h water immersion (NinjaFlex 85A, ASTM D570) — an immersion figure, not an equilibrium moisture content at 50 % RH[2]
Drying temperature & timeNot documented70 °C for at least 5 h in a hot-air dryer or vacuum oven (BASF)[4]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[16]Bubbling and popping at the nozzle, stringing and a rough surface[16]
Effect of moisture on strengthNo dry-versus-conditioned figures are published. Polymaker calls PC highly hygroscopic and requires a 70–80 °C dry for 6–8 h; run wet, the loss shows as surface defects and poor layer adhesion[15][16]Polymaker groups TPU with the highly hygroscopic materials; wet TPU prints with poor layer adhesion and weak, brittle layers[16]
Storage requirementAirtight containers with desiccant to prevent reabsorption[15]Sealed with desiccant; often kept in a dryer during the print[16]
Mechanical Properties
Tensile strength (XY)MPa68 at break (printed XY, ISO 527, 3DXTech) — above the 58 of 3DXTech's unfilled ezPC; Stratasys prints 47.6-49.4 at yield in XZ (ASTM D638)[1][21][5]26 ultimate (NinjaFlex 85A, ASTM D638)[2]
Young's modulusMPa2300 (printed XY, ISO 527); Stratasys prints 1960 in XZ and 1810-1910 in ZX (ASTM D638)[1][5]12 (NinjaFlex 85A, ASTM D638) — two orders of magnitude below any rigid filament; NinjaTek's 95A Cheetah reaches 26 by the same method[2][22]
Elongation at break%6 at break (printed XY, ISO 527), against 14 for the unfilled grade[1][21]650 at break (Filaflex 82A) and 660 (NinjaFlex 85A); BASF measures 600 in XY and 320 in ZX[3][2][4]
Flexural strengthMPa95 (printed XY, ISO 178); Stratasys prints 82.6-83.2 at break in XZ against 46.3-49.5 in ZX (ASTM D790)[1][5]Not documented
Flexural modulusMPa2310 (printed XY, ISO 178)[1]Not documented
Layer adhesion / Z tensileMPa32.5-37.9 at yield printed ZX (Stratasys, ASTM D638 on the Fortus 450mc and F900)[5]Not documented
Brittleness1–5Moderate[1]Very ductile — bends far before failing[2]
Hardness (scale-specific)Shore A / Shore D / RockwellRockwell 70 (118) — the source does not name the scales and Shore D 79 on extruded unfilled PC stock (ASTM D785, D2240); no figure is published for an ESD grade[23]29 Shore D / 85 Shore A (BASF Ultrafuse 85A, ISO 7619-1); 85 Shore A (NinjaFlex, ASTM D2240); 82 A nominal for Filaflex[2][4][3]
Creep resistance / sustained load1–5Excellent — holds load for years. Moulded unfilled PC was still running unbroken under 41 MPa tensile creep at room temperature when the test was stopped, and the conductive filler leaves the glass transition unchanged at 142 °C, so the creep mechanism is polycarbonate's[24][5]Poor — no 85A creep test; a printed 95A TPU bar crept from 74.5 to 82.7 mm over 5 days at 1.25 kg, and softer grades creep more[25]
Fatigue / repeated-flex resistance1–5Not documentedExcellent — living hinges viable[14]
Elasticity / flexibility1–5Rigid[1]Rubbery / highly elastic[2][3]
Z strength as % of XY%68-77 (Stratasys ZX against XZ tensile yield, ASTM D638)[5]53 — BASF measures 320 % elongation at break in ZX against 600 % in XY[4]
Wear resistance & frictionNot documentedAbrasion 0.08 g mass loss over 10 000 cycles (NinjaFlex, ASTM D4060); 82 mm³ (BASF, ISO 4649)[2][4]
Thermal Properties
HDT at 0.45 MPa°C143-146 printed in XY, XZ and ZX (Stratasys, ASTM D648 Method B at 66 psi); 135 moulded[5]Not documented
HDT at 1.8 MPa°C140-144 printed in XY, XZ and ZX (Stratasys, ASTM D648 Method B at 264 psi); 124 moulded[5]Not documented
Glass transition (Tg)°C143 (DSC, 3DXTech) and 142 (Stratasys, ASTM D7426)[1][5]Not documented
Melting point / Vicat°CNot documented216 melting (NinjaFlex 85A, DSC)[2]
Continuous service temperature°C113 — Prusa publishes this as the temperature resistance of Prusament PC Blend[20]Not documented
Thermal expansion (CTE)µm/m·K68.4 on extruded unfilled PC stock (ASTM D696; source states 3.8e-5 in/in/°F); no figure is published for a conductive-filled grade[23]Not documented
Environment & Chemical
UV resistance1–5Not documentedGood — years with some colour shift; Polymaker lists UV exposure among the conditions TPU withstands[14]
Chemical resistanceWithstands oils, solvents and fuels; Polymaker rates it good against weak acids[15]Withstands industrial solvents and UV exposure (Polymaker)[14]
Food contactBisphenol-A polycarbonate is not offered as food-contact filament[15]Not food safe without specific certification (Polymaker)[14]
Biodegradability / compostabilityNot biodegradable[15]Not biodegradable[14]
RecyclabilityMechanically recyclable but not accepted in household plastic collection[15]Not accepted in household plastic collection[14]
Electrical & ESD propertiesSurface resistance 10⁷–10⁹ ohm/sq, the static-dissipative band (ASTM D257), against above 10¹³ for unfilled ezPC[1][21]Not documented
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[26]Low hazard — minimal VOC and particle emission; TPU was not among the nine filaments in the chamber study[26]
Ultrafine-particle emission rateparticles/min≈4 × 10¹⁰ median — the highest ultrafine-particle rate of the nine filaments in the chamber study, above every ABS tested[26]Not documented
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[26][10]Open a window / occasional ventilation[26]
Dust & fibre handling hazardConductive carbon filler is bound in the matrix; avoid inhaling sanding dust[1]Not documented
Post-Processing
Sanding & machiningSands and machines well; the toughness means it cuts rather than chips[12]Difficult to sand or smooth; Polymaker limits post-processing to trimming or tumbling[14]
Gluing & solvent weldingCyanoacrylate; dichloromethane solvent-welds PC but is a laboratory reagent[12]Cyanoacrylate bonds TPU; no common solvent welds it[14]
Vapour / chemical smoothingNo practical vapour smoothing[12]No practical vapour smoothing[14]
Support material pairingPrints its own supports; 3DXTech sells a dedicated PC break-away support[12]Polymaker warns TPU supports are often very difficult to remove[14]
Solvents & Solubility
Soluble inDichloromethane, chloroform, DMF and dioxane dissolve it outright (Covestro, 6 days at 23 °C). Laboratory reagents.[27]DMF, DMSO, NMP and THF dissolve TPU; acetone, MEK and cyclohexanone are partial solvents. All laboratory reagents.[28]
Softened or crazed byMethanol, butyl acetate, ether, 1 % NaOH and phthalate plasticisers stress-crack it; acetone, MEK and xylene swell it.[27]Toluene and benzene swell it up to +50 % by weight at 23 °C; esters swell it severely; ethanol and IPA soften it.[28]
Solvent welding & smoothing agentDichloromethane cement welds PC — 16.5 MPa lap shear at one week (IPS Weld-On 3). A controlled carcinogen.[29]None practical — the true solvents (DMF, THF, NMP) are laboratory reagents and leave the joint swollen and weak.[28]

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. 3DXSTAT ESD-PC Technical Data Sheet 3DXTech · 2026-08 · tds
  2. NinjaFlex 85A Technical Specifications NinjaTek · 2026-08 · tds
  3. Filaflex 82A product page (Shore hardness and elongation) Recreus · 2026-08 · vendor
  4. Ultrafuse TPU 85A Technical Data Sheet (Version 3.0) BASF Forward AM · 2022-08 · tds
  5. PC-ESD — FDM Material Data Sheet Stratasys · 2024-10 · tds
  6. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  7. Siraya Tech Flex TPU 85A Filament — product page Siraya Tech · 2026-08 · vendor
  8. Proto-pasta product catalogue Proto-pasta · 2026-08 · vendor
  9. add:north TPU Pro Matte 85A product page add:north · 2026-08 · vendor
  10. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  11. PolyLite PC Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  12. Polycarbonate — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  13. Flexible (TPE/TPU) — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  14. TPU — material basics Polymaker Wiki · 2026-08 · doc
  15. PC — material basics Polymaker Wiki · 2026-08 · doc
  16. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  17. Extrudr Product Catalogue (DURAPRO PA12 data block) Extrudr · 2025-03 · tds
  18. 3DXSTAT ESD-PC — product page (print recommendations) 3DXTech · 2026-08 · doc
  19. Bambu Filament Technical Data Sheet V2.0 — PC Bambu Lab · 2026-08 · tds
  20. Prusament PC Blend Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  21. ezPC Polycarbonate Technical Data Sheet 3DXTech · 2026-08 · tds
  22. NinjaTek technical specs comparison chart (Cheetah, NinjaFlex, Armadillo, Alloy 910, Nylon 645) NinjaTek · 2026-08 · tds
  23. TECANAT natural (PC) — stock shape properties Ensinger · 2026-08 · tds
  24. Experimental data for creep and dynamic mechanical properties of polycarbonate and polycarbonate/ABS Data in Brief 42:108264 · 2022-06 · paper
  25. BambuLab TPU 95A HF vs Qidi TPU 95A HF — results spreadsheet My Tech Fun (Igor Gaspar) · 2024-02 · test
  26. 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
  27. Makrolon — The chemical resistance (Makrolon 2800, 6 days at 23 °C and 50 °C) Covestro · 2016-12 · tds
  28. Elastollan — Chemical properties: swelling and chemical resistance BASF · 2026-08 · tds
  29. Weld-On 3 Acrylic Plastic Cement — technical data sheet (shipped as dichloromethane) IPS Corporation · 2002-07 · tds