3D Printing Info

Filament comparison

PA aramid vs PLA+

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

Aramid-fibre nylon guidePLA+ / Tough PLA guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PA aramid comparisonsMore PLA+ comparisons
PA aramid vs PLA+ — documented properties and sources
PropertyAramid-fibre nylonPAPLA+ / Tough PLAPLA
Market snapshot
Listing priceUSD/kg; dated snapshotsNot documented$16.49/kg median; $10.45–$39.99/kg across 10 dated product listings
Identity & Market
Base polymer / chemistryAramid-fibre reinforced polyamide[1]PLA compounded with impact modifiers; suppliers publish the base as polylactic acid only[2][3]
Densityg/cm³Not documented1.17–1.24 (Polymaker); 1.21 (Bambu Lab, ISO 1183)[2][3]
Typical priceUSD/kgNot documentedMainstream 1 kg spools cluster near 16[4][5]
Price range across brandsUSD/kgNot documented10–40 across brands; budget house brands 10–17, Sakata 3D HR-870 26, Polymaker and Fiberlogy 36–40[6][5][7][8][9]
Market availability1–5Special order, 1–2 makers worldwide — no aramid-filled nylon filament was found in any catalogue searched; the aramid filaments that do exist in the retail market use an ASA matrix[10][11]Stocked by most mainstream brands[6][4][5][7][8]
Spool sizes & diametersNot documented1.75 and 2.85 mm; 0.75, 0.85, 1 and 1.1 kg spools[7][8][6]
Typical applicationsNot documentedFunctional parts and enclosures that need impact tolerance but not heat resistance[2][3]
Diameter tolerance± mmNot documented±0.03 (Bambu Lab)[12]
Printing Parameters
Nozzle temperature°CNot documented190–230 (Polymaker); Bambu Lab Tough+ needs 220–250[2][3]
Bed temperature°CNot documented25–60 (Polymaker); 35–65 (Bambu Lab Tough+)[2][3]
Enclosure / chamber requirement1–5Enclosure required (passive) — as for every nylon[1]Open frame is fine[2][3]
Part cooling fanNot documentedFan on[2][3]
Bed surface & adhesion aidNot documentedTextured or smooth PEI; Bambu Lab recommends glue stick or liquid glue for Tough+[2][3]
Warping tendency1–5Not documentedNone[2]
Bed-adhesion difficulty1–5Not documentedSticks to anything[13]
Stringing / oozing tendency1–5Not documentedSlight — 1–3 mm retraction handles it[2][13]
Overall printing difficulty1–5Not documentedEasy — minor profile tuning; Tough+ wants a hotter nozzle than plain PLA[2][3]
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required — no aramid-filled nylon datasheet was obtainable; Polymaker measures about 9 h of brass nozzle life on its fibre-filled nylons[14]Brass fine indefinitely[15]
Abrasiveness1–5Highly abrasive — fibre-reinforced nylon composite[14]Non-abrasive[16][15]
Nozzle clog risk1–5High — jams from moisture, heat creep or particles; nylon already needs a drybox and Prusa names kevlar among the fibres that raise nozzle-clogging risk[17]Very low[15]
Heat-creep / jam sensitivity1–5Not documentedModerate — good heatbreak cooling needed; softens below 60 °C like plain PLA[18]
Hotend requirementNot documentedNo special hot-end required[13]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Very high (>2 %) — the polyamide matrix governs uptake[19]Low — 0.27 % saturated at 25 °C / 55 % RH[3]
Equilibrium moisture content at ~50 % RH%Not documented0.27 saturated at 25 °C / 55 % RH (Bambu Lab Tough+)[3]
Drying temperature & timeNot documented55 °C for 6–8 h; 65–75 °C for 12 h on a Bambu Lab X1 heatbed[2][3]
Symptoms when wetNot documentedBubbling and popping at the nozzle, stringing, rough surface and weak layers[19]
Effect of moisture on strengthPolymaker's printed dry-versus-wet blocks for its CoPA nylon show what conditioning does to the family: tensile 78.0 → 34.3 MPa and modulus 2703 → 724 MPa, with notched Charpy rising 6.9 → 27.7 kJ/m². Fibre reinforcement reduces but does not remove the effect[20][21]Polymaker rates PLA low-sensitivity and publishes no dry-versus-conditioned figures for the modified grades; the loss shows as poor layer adhesion rather than a strength number[19]
Storage requirementNot documentedSealed with desiccant below 20 % RH; shelf life at ambient is long[3][13]
Mechanical Properties
Tensile strength (XY)MPaNot documented35–43 (printed XY, ISO 527); 53 on My Tech Fun 4×4 mm bars for Bambu Lab Tough[2][3][22][23]
Young's modulusMPaNot documented1860–2150 (printed XY, ISO 527) — below plain PLA at 2300–3427[2][3][24][25]
Elongation at break%Not documented5.1–5.7 (printed XY, ISO 527)[2][3]
Flexural strengthMPaNot documented62–65 (printed XY, ISO 178) — below plain PLA at 76–87[2][3][26][25]
Flexural modulusMPaNot documented2140–2393 (printed XY, ISO 178)[2][3]
Charpy impact, notchedkJ/m²Not documented38.9–72.3 (printed XY, ISO 179, notched) — 5–9× plain PLA[2][3]
Other impact dataNot documentedCharpy unnotched 80.6 printed XY (Bambu Lab Tough+); CNC Kitchen measured ~20 vs 5 kJ/m² for PolyLite PLA[3][22]
Layer adhesion / Z tensileMPaNot documented20.9–32.4 printed Z (ISO 527); 33.0 on My Tech Fun layer-adhesion bars vs 27.6 for PLA Basic[2][3][23]
Brittleness1–5Not documentedTough — absorbs impact, yields before breaking[2][3][22]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documented78.8 Shore D measured on printed bars (My Tech Fun), against 75.3 for the same maker's plain PLA[27]
Creep resistance / sustained load1–5Not documentedPoor — 12 mm bar sagged to 20.2 mm over 5 days at 1.25 kg, the same as plain PLA[23][28]
Fatigue / repeated-flex resistance1–5Not documentedBelow average — impact modifiers raise absorbed energy 5–9×; plain PLA ran 38 000–49 000 cycles at 30 % of tensile strength[29][3][22]
Elasticity / flexibility1–5Not documentedRigid[2]
Z strength as % of XY%Not documented60 (Bambu Lab Tough+) to 78 (PolyMax PLA), printed[2][3]
Thermal Properties
HDT at 0.45 MPa°CNot documented55 (PolyMax) to 61 (Tough+), ISO 75 at 0.45 MPa[2][3]
HDT at 1.8 MPa°CNot documented52 (PolyMax) to 58 (Tough+), ISO 75 at 1.8 MPa[2][3]
Glass transition (Tg)°CNot documented61 (DSC)[2][3]
Melting point / Vicat°CNot documented149–151 peak melt (DSC); Vicat 62 (ISO 306)[2][3]
Continuous service temperature°CNot documented48–57 — loaded bars begin to move at this temperature: 48 for Polymaker PLA Pro, 50 for Sunlu PLA+, 52 for Bambu Lab Tough, 57 for PolyTerra PLA+[23][30][27][28]
Thermal expansion (CTE)µm/m·KNot documented96–99 for plain printed PLA (fibre Bragg grating, 25–50 °C); no grade-specific measurement published[31]
Flammability / UL 94Not documentedFlammable; no UL 94 rating published by the major brands[3][2]
Environment & Chemical
UV resistance1–5Not documentedDegrades within weeks outdoors[18][32]
Chemical resistanceNot documentedGood against weak acids, oils and grease; poor against strong acids and alkalis[2][3]
Food contactNot documentedBase resin is food-contact grade, but printed layer grooves harbour bacteria; Prusa advises against food use[18]
Biodegradability / compostabilityNot documentedIndustrially compostable only — needs sustained 55 °C; not home compostable[33][18]
RecyclabilityNot documentedMechanically recyclable; not accepted in household plastic collection[33]
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[34]Low hazard — minimal VOC and particle emission[34]
VOC emission rateµg/minUp to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study[34]Not documented
Ultrafine-particle emission rateparticles/min≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured[34]Not documented
Hazardous species emittedCaprolactam, at up to 180 µg/min from nylon filament[34]Not documented
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[34]None needed in a normal room[34]
Post-Processing
Sanding & machiningNot documentedWet sanding — dry sanding heats the surface by friction and smears it[32][18]
Gluing & solvent weldingNot documentedCyanoacrylate for most joints; some grades partially dissolve and bond with acetone[18][35]
Vapour / chemical smoothingNot documentedNo practical vapour smoothing — only chloroform, hot benzene or THF, which are laboratory-only[18]
Support material pairingNot documentedPolySupport and PolyDissolve S1 (Polymaker); Support for PLA (Bambu Lab)[2][3]
Dimensional accuracy & detailNot documented55° overhangs and 30 mm bridges (Bambu Lab Tough+)[3]
Solvents & Solubility
Soluble inFormic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[36]Chloroform: 10 % w/v in 2–4 h at 23 °C, every grade and morphology; THF and DMF only at 65 °C. Laboratory reagents.[37]
Softened or crazed byZinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[36]Acetone, ethyl acetate and toluene plasticise it but dissolve <1 % even at 65 °C; submersion in acetone crazes and destroys parts.[37][38]
Solvent welding & smoothing agentNone — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[36]Chloroform vapour smooths and welds PLA at the cost of tensile strength; acetone does not smooth it at all.[39][38]

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. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  2. PolyMax PLA Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  3. Bambu Filament Technical Data Sheet V3.0 — PLA Tough+ Bambu Lab · 2026-08 · tds
  4. eSUN PLA+ 1.75mm 1KG eSUN Official Store · 2026-08 · vendor
  5. Overture PLA+ 1.75mm Overture3D · 2026-08 · vendor
  6. JAYO PLA+ 1.1KG Reusable Spool 1.75mm JAYO Official Store · 2026-08 · vendor
  7. Polymaker PolyMax PLA 0.75kg Polymaker Shop · 2026-08 · vendor
  8. Fiberlogy Impact PLA 850g 3DJake International · 2026-08 · vendor
  9. PLA HR-870 NATURAL Sakata 3D Filaments · 2026-08 · vendor
  10. Polymaker product catalogue Polymaker · 2026-08 · vendor
  11. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  12. PLA Basic — product page Bambu Lab US Store · 2026-08 · vendor
  13. PLA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  14. Fiberon PA6-CF20 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  15. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  16. Prusament PLA — material page Prusa Polymers · 2026-08 · doc
  17. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  18. PLA — material guide Prusa Knowledge Base · 2026-08 · doc
  19. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  20. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  21. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  22. The difference of PLA and PLA+ tested! (feat. Polymaker) CNC Kitchen · 2020-08 · test
  23. BambuLab PLA Basic vs PLA Tough vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  24. Prusament PLA Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  25. PolyLite PLA Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  26. Bambu Filament Technical Data Sheet V3.0 — PLA Basic Bambu Lab · 2026-08 · tds
  27. Carbon Fiber PLA vs META-PLA vs PLA+ vs PLA by Sunlu — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  28. PolyTerra PLA vs PLA+ — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  29. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  30. Polymaker PLA Pro vs PLA-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  31. Characterization of Thermal Expansion Coefficient of 3D Printing Polymeric Materials Using Fiber Bragg Grating Sensors Materials 17(18):4668 · 2024-09 · paper
  32. Prusament PLA Technical Data Sheet v1.0 Prusa Polymers · 2018-09 · tds
  33. Filamentive PLA (recycled) — product page Filamentive · 2026-08 · vendor
  34. 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
  35. Prusament rPLA Corn Pigment 1kg — product page Prusa Research · 2026-08 · vendor
  36. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  37. Solubility Study of Ingeo Biopolymer Grades in Common Organic Solvents (NWPD003) NatureWorks · 2019-10 · tds
  38. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  39. Effect of vapour smoothing in trichloromethane on 3D printed PLA — surface, mechanical and chemical structure Pitale, Keche & Chopra, Engineering Research Express 6(4) 045579 · 2024-12 · paper