3D Printing Info

Filament comparison

ABS+ vs TPU-CF

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

ABS+ / Tough ABS guideCarbon-fibre TPU guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ABS+ comparisonsMore TPU-CF comparisons
ABS+ vs TPU-CF — documented properties and sources
PropertyABS+ / Tough ABSABSCarbon-fibre TPUFLEX
Market snapshot
Listing priceUSD/kg; dated snapshots$26.49/kg median; $15.99–$29.99/kg across 4 dated product listings$107.05/kg median; $107.05–$107.05/kg across 1 dated product listings
Identity & Market
Base polymer / chemistryABS reformulated for lower warping and a higher glass transition; Polymaker's ABS Pro and ABS Max reach Tg 114.9 and 126.3 °C against 101 °C for PolyLite ABS[1][2][3]Carbon-fibre reinforced thermoplastic polyurethane at the hard end of the range[4]
Densityg/cm³1.04 (ABS Pro) and 1.06 (ABS Max), ISO 1183[1][2]1.22 (Extrudr FLEX HARD CF, ISO 2781)[4]
Typical priceUSD/kg1 kg spools cluster near 27[5]107 for the only retail listing found (Extrudr 0.5 kg coil, incl. VAT)[6]
Price range across brandsUSD/kg16–30 across brands; SUNLU E-ABS 16, Polymaker ABS Pro 25, YXPOLYER ABS Enhanced 28, Polymaker ABS Max 30[5][7][8]One listing only: EUR 49.56 incl. VAT per 0.5 kg coil, direct from Extrudr; no reseller or second brand found[6]
Market availability1–5Available from several mainstream brands[5]Niche, a handful of specialist brands — Extrudr's FLEX HARD CF is the only carbon-filled flexible with a published datasheet found here[4]
Spool sizes & diameters1.75 and 2.85 mm; 1 kg spools[5]1.75 mm; 0.5 and 2 kg coils[6]
Typical applicationsLarge enclosure and automotive parts where plain ABS warps or softens too early[1][2]Stiffened flexible parts — damping mounts and semi-rigid brackets[4]
Printing Parameters
Nozzle temperature°C270–290 (ABS Pro); 270–300 (ABS Max) — 25–35 °C above plain ABS[1][2]230–260 (Extrudr FLEX HARD CF)[4]
Bed temperature°C120 (ABS Max)[2]50–90 (Extrudr FLEX HARD CF)[4]
Enclosure / chamber requirement1–5Enclosure required (passive)[1][2][9]Open frame is fine[4]
Bed surface & adhesion aidClean the plate and apply glue; Simplify3D also lists Kapton tape and ABS slurry[9][10]PEI sheet or painter's tape; Polymaker warns TPU can over-stick and advises a glue stick as a release agent[11][12]
Maximum volumetric flow (mm³/s; see test conditions)mm³/sUp to 250 mm/s (ABS Pro) and 200 mm/s (ABS Max), equivalent to 20 and 16 on a 0.4 mm nozzle at 0.2 mm layer[1][2][13]1.6–8 at the 20–100 mm/s Extrudr specifies on a 0.4 mm nozzle at 0.2 mm layer[4]
Warping tendency1–5High — enclosure needed for reliable large parts[9]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[9]Not documented
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[14]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; the hotter nozzle rules out PTFE-lined hotends[1][2]Advanced — enclosure, hardware upgrades, tuning; hardened nozzle needed[4]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[9]Hardened steel required — Extrudr marks FLEX HARD CF as needing a hardened nozzle where its unfilled FLEX grades do not[4]
Abrasiveness1–5Non-abrasive[9]Highly abrasive — standard CF composite[4]
Nozzle clog risk1–5Low — unfilled ABS compound; no special hot-end required and clogging is not among the listed drawbacks[10][15]High — jams from moisture, heat creep or particles; a flexible base plus chopped carbon fibre, which Prusa lists as a higher nozzle-clogging risk, and Extrudr requires a hardened nozzle[16][4][11]
Heat-creep / jam sensitivity1–5Slightly sensitive[10]Not documented
Hotend requirementNo special hot-end required[10]No special hot-end required, but a direct-drive extruder is (Simplify3D)[11]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.51 % maximum water absorption (ABS Pro)[1]Moderate[17]
Equilibrium moisture content at ~50 % RH%0.51 maximum water absorption (Polymaker ABS Pro)[1]Not documented
Drying temperature & time70 °C for 6 h (ABS Max)[2]60 °C for 6 h (Extrudr FLEX HARD CF)[4]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[17]Bubbling and popping at the nozzle, stringing and a rough surface[17]
Effect of moisture on strengthPolymaker rates ABS moderate-sensitivity and publishes no dry-versus-conditioned figures[17]Polymaker groups TPU with the highly hygroscopic materials; no dry-versus-conditioned figures are published[17]
Storage requirementSealed with desiccant; Polymaker rates ABS moderate-sensitivity[17]Sealed with desiccant; often kept in a dryer during the print[17]
Mechanical Properties
Tensile strength (XY)MPa34.9 (ABS Pro) and 35.7 (ABS Max) printed XY, ISO 527[1][2]Not documented
Young's modulusMPa2330 (ABS Pro) and 2320 (ABS Max) printed XY, ISO 527[1][2]35 (Extrudr FLEX HARD CF, ISO 527-2/5A/500)[4]
Elongation at break%6.7 (ABS Max) and 7.3 (ABS Pro) at break, printed XY, ISO 527[1][2]380 ultimate elongation (Extrudr FLEX HARD CF, ISO 527-2/5A/500), against 490 for the unfilled FLEX HARD[4]
Flexural strengthMPa60.1 (ABS Pro) and 63.3 (ABS Max) printed XY, ISO 178[1][2]Not documented
Flexural modulusMPa2330 (ABS Pro) and 2500 (ABS Max) printed XY, ISO 178[1][2]Not documented
Charpy impact, notchedkJ/m²10.5 (ABS Max) and 14.5 (ABS Pro) printed XY, ISO 179, notched[1][2]Not documented
Layer adhesion / Z tensileMPa21.9 (ABS Pro) and 25.4 (ABS Max) printed Z, ISO 527[1][2]Not documented
Brittleness1–5Tough — absorbs impact, yields before breaking[1][2]Very ductile — bends far before failing[4]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documented70 Shore D (Extrudr FLEX HARD CF, ISO 868), against 58 Shore D for the unfilled FLEX HARD[4]
Creep resistance / sustained load1–5Moderate — no creep test found; Tg of 115 °C (ABS Pro) and 126 °C (ABS Max) keeps room-temperature service far below softening[1][2]Below average — no CF-grade creep test; the grade is 70 Shore D where a 95A TPU bar crept from 74.5 to 82.7 mm over 5 days at 1.25 kg[4][18]
Fatigue / repeated-flex resistance1–5Moderate — no S-N curve found; 6.7–7.3 % elongation and 10.5–14.5 kJ/m² notched Charpy, below unfilled Bambu Lab ABS[1][2][19]Good — 380 % ultimate elongation and a damping application set (Extrudr cites longboard wheels), below the unfilled grades[4]
Elasticity / flexibility1–5Rigid[1]Semi-flexible[4]
Z strength as % of XY%63 (ABS Pro) and 71 (ABS Max), printed[1][2]Not documented
Wear resistance & frictionNot documentedAbrasion 26 mm³ (Extrudr FLEX HARD CF, ISO 4649-A) — the same as the unfilled FLEX HARD[4]
Thermal Properties
HDT at 0.45 MPa°C106.4 (ABS Pro) and 118.1 (ABS Max), ISO 75 at 0.45 MPa[1][2]Not documented
HDT at 1.8 MPa°C101.4 (ABS Pro) and 113.1 (ABS Max), ISO 75 at 1.8 MPa[1][2]Not documented
Glass transition (Tg)°C114.9 (ABS Pro) and 126.3 (ABS Max), DSC[1][2]-24 (Extrudr FLEX HARD CF)[4]
Melting point / Vicat°CAmorphous — no melting point; Vicat 116.1 (ABS Pro) and 127.4 (ABS Max), ISO 306[1][2]Vicat A 140 (Extrudr FLEX HARD CF, ISO 306)[4]
Thermal expansion (CTE)µm/m·K86–89 for printed unfilled ABS (fibre Bragg grating, 25–50 °C); no grade-specific measurement published[20]Not documented
Environment & Chemical
UV resistance1–5Months outdoors before embrittlement[14]Good — years with some colour shift; Polymaker lists UV exposure among the conditions TPU withstands[12]
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[3]Withstands industrial solvents and UV exposure (Polymaker)[12]
Food contactNot food safe — Polymaker cites potential chemical leaching[14]Not food safe without specific certification (Polymaker)[12]
Biodegradability / compostabilityNot biodegradable[14]Not biodegradable[12]
RecyclabilityMechanically recyclable but not accepted in household plastic collection[14]Not accepted in household plastic collection[12]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[21][9]Low hazard — minimal VOC and particle emission; TPU was not among the nine filaments in the chamber study[21]
VOC emission rateµg/min12–113 styrene, the dominant VOC from every ABS and HIPS combination tested[21]Not documented
Ultrafine-particle emission rateparticles/min2 × 10¹⁰ to 9 × 10¹⁰ median across all ABS printers, two orders of magnitude above PLA's ≈1 × 10⁸[21]Not documented
Hazardous species emittedStyrene dominates. Bambu Lab states ABS and ASA release harmful gases such as styrene at printing temperature, which can be toxic and cause dizziness or nausea[21][9]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration — an enclosure alone cut measured UFP by only about 35 %[21][9]Open a window / occasional ventilation[21]
Dust & fibre handling hazardNot documentedCarbon fibre is bound in the matrix; sanding dust should not be inhaled[4]
Post-Processing
Sanding & machiningSands well and takes filler before painting[14]Difficult to sand or smooth; Polymaker limits post-processing to trimming or tumbling[12]
Painting & finishingPaints readily after light abrasion[14]Not documented
Gluing & solvent weldingNot documentedCyanoacrylate bonds TPU; no common solvent welds it[12]
Vapour / chemical smoothingAcetone vapour smoothing works[3]No practical vapour smoothing[12]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a dedicated Support for ABS[22][9]Polymaker warns TPU supports are often very difficult to remove[12]
Dimensional accuracy & detailNot documentedTear strength 165 kN/m (Extrudr FLEX HARD CF, ISO 34-1B)[4]
Solvents & Solubility
Soluble inAcetone dissolves it — the basis of ABS slurry; so do MEK, THF, ethyl acetate, chloroform, dichloromethane and toluene.[23][3]DMF, DMSO, NMP and THF dissolve the TPU matrix and leave the fibre; ketones are partial solvents. Laboratory reagents.[24]
Softened or crazed byPetrol and perchloroethylene soften it and benzene attacks it; d-limonene disrupts layer adhesion in some ABS and ASA grades.[23][25]Toluene and benzene swell it up to +50 % by weight at 23 °C; esters swell it severely; ethanol and IPA soften it.[24]
Solvent welding & smoothing agentAcetone: about 20 min of vapour at 80 °C over 5 mm of liquid. Prusa measured layer adhesion more than doubled.[26]None practical — the true solvents (DMF, THF, NMP) are laboratory reagents and leave the joint swollen and weak.[24]

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. Polymaker ABS Pro Technical Data Sheet V1 (2026-05-29) Polymaker · 2026-05 · tds
  2. Polymaker ABS Max Technical Data Sheet V1.1 (2026-06-01) Polymaker · 2026-06 · tds
  3. PolyLite ABS Technical Data Sheet (V5.5 served at this URL) Polymaker · 2024-11 · tds
  4. Extrudr Product Catalogue (DURAPRO PA12 data block) Extrudr · 2025-03 · tds
  5. Polymaker product catalogue Polymaker · 2026-08 · vendor
  6. Extrudr TPU FLEX Hard CF — product page (1.75 mm, 0.5 and 2 kg coils, price) Extrudr (FD3D GmbH) · 2026-08 · vendor
  7. SUNLU E-ABS (Easy ABS) 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  8. YXPOLYER ABS Enhanced product page YXPOLYER · 2026-08 · vendor
  9. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  10. ABS — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  11. Flexible (TPE/TPU) — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  12. TPU — material basics Polymaker Wiki · 2026-08 · doc
  13. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  14. ABS — material basics Polymaker Wiki · 2026-08 · doc
  15. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  16. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  17. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  18. BambuLab TPU 95A HF vs Qidi TPU 95A HF — results spreadsheet My Tech Fun (Igor Gaspar) · 2024-02 · test
  19. Bambu Filament Technical Data Sheet V3.0 — ABS Bambu Lab · 2026-08 · tds
  20. Characterization of Thermal Expansion Coefficient of 3D Printing Polymeric Materials Using Fiber Bragg Grating Sensors Materials 17(18):4668 · 2024-09 · paper
  21. 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
  22. HIPS — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  23. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  24. Elastollan — Chemical properties: swelling and chemical resistance BASF · 2026-08 · tds
  25. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  26. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc