3D Printing Info

Filament comparison

PA6-GF vs PVDF

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

Glass-fibre PA6 (PA6-GF) guidePVDF guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PA6-GF comparisonsMore PVDF comparisons
PA6-GF vs PVDF — documented properties and sources
PropertyGlass-fibre PA6 (PA6-GF)PAPVDFENGINEERING
Market snapshot
Listing priceUSD/kg; dated snapshots$59.98/kg median; $39.99–$130.00/kg across 6 dated product listings$250.67/kg median; $250.67–$250.67/kg across 1 dated product listings
Identity & Market
Base polymer / chemistryPA6 reinforced with chopped glass fibre — Polymaker's grade is 25 wt%[1][2]Polyvinylidene fluoride — a semi-crystalline fluoropolymer[3][4]
Densityg/cm³1.14 (Bambu Lab) and 1.20 (Polymaker Fiberon), ISO 1183[2][1]1.71 (ISO 1183) — the densest unfilled filament in the dataset[3]
Typical priceUSD/kg1 kg-equivalent spools span 40–130; the middle of the market is about 60[2][5][6]1 kg-equivalent spools cluster near 251[7]
Price range across brandsUSD/kg40–130 across brands; SUNLU 40, YXPOLYER 45, Polymaker Fiberon and Bambu Lab 60, 3DXTech FibreX 87, Obsidian Nylon 6+GF 130[5][2][7][6][8]251 at 3DXTech's 750 g pricing — the most expensive material in the whole dataset[7]
Market availability1–5Stocked by most mainstream brands[2][5][7][6][8]Special order, 1–2 makers worldwide[7][9]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[5][7][2]1.75 and 2.85 mm; 750 g spools[7]
Typical applicationsStiff, heat-resistant structural parts where a matte finish and lower cost beat carbon fibre[2][1]Chemical-plant fittings, semiconductor handling and parts needing outstanding UV and chemical resistance[3]
Printing Parameters
Nozzle temperature°C260–290 (Bambu Lab)[2]Not documented
Bed temperature°CNot documented70–110 (3DXTech FluorX)[3]
Enclosure / chamber requirement1–5Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber[2]Enclosure required (passive)[3]
Recommended chamber temperature°C45–60 (Bambu Lab)[2]Not documented
Bed surface & adhesion aidPEI sheet with a glue stick, or a dedicated adhesive such as Magigoo[10][11]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s10 at Bambu Lab's 130 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[2][12]Not documented
Warping tendency1–5Not documentedHigh — enclosure needed for reliable large parts[3]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[10]Not documented
Stringing / oozing tendency1–5Moderate — retraction tuning needed[11]Not documented
Overall printing difficulty1–5Expert / industrial hardware only[2][13]Expert / industrial hardware only[3][4]
Extruder requirement0.6 mm nozzle recommended by Bambu Lab; 0.4 and 0.8 also supported[2]Not documented
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required — Polymaker measures brass nozzle life at about 9 h on PA6-GF25 and recommends hardened steel or ruby[1]Brass fine indefinitely for unfilled grades[3]
Abrasiveness1–5Highly abrasive — standard GF composite; Polymaker puts brass nozzle life at roughly 9 h on PA6-GF25[1]Non-abrasive when unfilled[3]
Nozzle clog risk1–5Very high — frequent jams without careful setup[13]Low — 3DXTech lists no special nozzle concerns, no minimum layer height and states drying is not required[9]
Heat-creep / jam sensitivity1–5Moderate — good heatbreak cooling needed[10]Not documented
Hotend requirementMay require an all-metal hot end (Simplify3D)[10]Not documented
Other hardware wearNot documentedHydrogen fluoride released on overheating is extremely corrosive and will attack hotend and enclosure metalwork as well as people[4]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Very high (>2 %) — 2.56 % saturated at 25 °C / 55 % RH (Bambu Lab) and 3.33 % equilibrium (Polymaker Fiberon), the highest in the dataset[2][1]Negligible (<0.1 % EMC) — fluoropolymers are essentially non-hygroscopic[3]
Equilibrium moisture content at ~50 % RH%2.56 saturated at 25 °C / 55 % RH (Bambu Lab); 3.33 equilibrium (Polymaker Fiberon PA6-GF25)[2][1]Not documented
Drying temperature & time80 °C for 8–12 h (Bambu Lab)[2]Not documented
Symptoms when wetPopping and cracking during extrusion, then hard-to-diagnose defects[14]Not documented
Effect of moisture on strengthPolymaker publishes dry and wet printed blocks for PA6-GF25 itself: at 4.57 % moisture tensile falls 80.1 → 40.2 MPa and modulus 5357 → 1794 MPa, while notched Charpy rises 10.0 → 28.0 kJ/m²[1][14]Not applicable in practice — 3DXTech states drying is not required for PVDF, so there is no moisture-driven strength loss to measure[9]
Storage requirementSealed below 20 % RH with desiccant[13]Not documented
Hydrolysis at melt temperaturePolymaker specifies an 80–100 °C dry and storage below 20 % RH; no molecular-weight loss figure is published, and the wet data it does publish is conditioning rather than melt hydrolysis[15][16]Not documented
Mechanical Properties
Tensile strength (XY)MPa75 ± 6 (Bambu Lab) and 80.1 ± 1.8 (Polymaker Fiberon, dry/annealed) printed XY, ISO 527; Fiberon falls to 40.2 ± 2.1 conditioned to 4.57 % moisture. Stratasys FDM PA6/66-GF30-FR gives 60.2-61.1 at break and 61.7-62.3 at yield printed XZ (ASTM D638)[2][1][17]51 at break (printed XY, ISO 527)[3]
Young's modulusMPa2850 ± 260 (Bambu Lab) and 5357 ± 211 (Polymaker Fiberon, dry) printed XY, ISO 527; Fiberon falls to 1794 ± 84 conditioned. Stratasys FDM PA6/66-GF30-FR gives 5600-5830 printed XZ against 3050-3140 in ZX (ASTM D638)[2][1][17]2450 (printed XY, ISO 527)[3]
Elongation at break%2.4 ± 0.2 dry (Polymaker Fiberon) to 3.9 ± 0.8 (Bambu Lab) printed XY, ISO 527; the Fiberon grade rises to 4.2 ± 0.7 conditioned[2][1]25 at break (printed XY, ISO 527)[3]
Flexural strengthMPaNot documented50 (printed XY, ISO 178)[3]
Flexural modulusMPa3670 ± 140 printed XY, ISO 178 (Bambu Lab)[2]1800 (printed XY, ISO 178)[3]
Charpy impact, notchedkJ/m²10.0 ± 0.7 printed XY dry and 28.0 ± 1.0 conditioned, ISO 179 notched (Polymaker Fiberon); Bambu Lab 7.2 ± 2.3[1][2]Not documented
Other impact dataCharpy unnotched 27.2 ± 2.2 printed XY (Bambu Lab, ISO 179). Stratasys FDM PA6/66-GF30-FR gives Izod notched 74.6-77.1 J/m printed XZ against 17.2-22.1 in ZX (ASTM D256)[2][17]Izod 133 J/m on extruded PVDF stock, converted from 2.49 ft-lb/in (ASTM D256)[18]
Layer adhesion / Z tensileMPa27 ± 5 (Bambu Lab) and 60.7 ± 1.1 (Polymaker Fiberon, dry) printed Z, ISO 527 — the two makers differ by more than a factor of two; Fiberon falls to 26.3 ± 1.5 conditioned. Stratasys FDM PA6/66-GF30-FR gives 23.7-24.4 at break printed ZX (ASTM D638)[2][1][17]Not documented
Brittleness1–5Brittle — snaps with little warning; elongation at break 2.4 % in XY[1]Tough — absorbs impact, yields before breaking[3]
Hardness (scale-specific)Shore A / Shore D / RockwellRockwell M88 / R117 on extruded PA66-GF30 stock (ASTM D785)[19]Rockwell M79 on extruded PVDF stock (ASTM D785)[18]
Creep resistance / sustained load1–5Good. Ensinger lists high creep resistance as a headline property of extruded PA66-GF30 stock; the rating is held below Excellent because equilibrium moisture uptake of 3.33 % softens the matrix in service[19][1]Not documented
Fatigue / repeated-flex resistance1–5Good. Ensinger lists high fatigue strength as a headline property of extruded PA66-GF30 stock[19]Not documented
Elasticity / flexibility1–5Rigid[2]Slightly flexible in thin sections[3]
Z strength as % of XY%36 (Bambu Lab) to 76 (Polymaker Fiberon), printed; Stratasys FDM PA6/66-GF30-FR gives 39-41 (ZX against XZ tensile at break, ASTM D638)[2][1][17]Not documented
Thermal Properties
HDT at 0.45 MPa°C182 (Bambu Lab) and 191 (Polymaker Fiberon), ISO 75 at 0.45 MPa. Stratasys FDM PA6/66-GF30-FR gives 161 printed XY and 185 XZ (ASTM D648 at 66 psi)[2][1][17]149 on extruded PVDF stock (ASTM D648 at 66 psi; converted from 300 °F)[18]
HDT at 1.8 MPa°C157 (Polymaker Fiberon) and 158 (Bambu Lab), ISO 75 at 1.8 MPa[2][1]113 on extruded PVDF stock (ASTM D648 at 264 psi; converted from 235 °F)[18]
Glass transition (Tg)°C67 (Bambu Lab) and 70.4 (Polymaker Fiberon), DSC; Stratasys measures 51.5 on FDM PA6/66-GF30-FR (ASTM D7426)[2][1][17]Not documented
Melting point / Vicat°C214.5 (Polymaker Fiberon) and 219 (Bambu Lab) melting, DSC; Vicat 210–212 (ISO 306)[2][1]170 melting (ISO 11357)[3]
Continuous service temperature°CNot documented149 long term and short term on extruded PVDF stock (converted from 300 °F)[18]
Thermal expansion (CTE)µm/m·K48.6 on extruded PA66-GF30 stock (ASTM D696; source states 2.7e-5 in/in/°F). Stratasys measures much higher on printed FDM PA6/66-GF30-FR — 95.4 over -20 to 5 °C and 214 over 25 to 80 °C in XY (ASTM E831)[19][17]127.8 (extruded PVDF stock, ASTM D696; source states 7.1e-5 in/in/°F) — the highest thermal expansion of any engineering polymer in this dataset[18]
Flammability / UL 94Flammable; no UL 94 rating published for the grades surveyed[15]UL 94 V-0 on extruded PVDF stock; Ensinger lists inherent flame resistance[18]
Environment & Chemical
UV resistance1–5Months outdoors before embrittlement — unstabilised polyamide yellows under UV[11]Excellent — designed for permanent outdoor use; Ensinger lists good UV and weather resistance and high gamma radiation resistance for PVDF stock[3][18]
Chemical resistanceWithstands oils, fuels and alkalis[11]Outstanding — resistant to most acids, solvents and oxidising agents, which is the reason to use it[3]
Water / humidity resistance in service1–5Absorbs water, properties shift[14]Excellent — essentially unaffected[3]
Food contactNot food-contact certified as filament[11]Not documented
Biodegradability / compostabilityNot biodegradable[11]Not documented
RecyclabilityNot accepted in household plastic collection[11]Not documented
Electrical & ESD propertiesSurface resistivity above 10¹² ohm — insulating (Polymaker Fiberon, ANSI/ESD S11.11)[1]Not documented
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[20]Very high — toxic decomposition products; local exhaust mandatory. Above 315 °C thermal decomposition yields hydrofluoric acid, hydrogen cyanide and carbon monoxide[4]
VOC emission rateµg/minUp to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study[20]Not documented
Ultrafine-particle emission rateparticles/min≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured[20]Not documented
Hazardous species emittedCaprolactam, at up to 180 µg/min from nylon filament[20]Above 315 °C: hydrofluoric acid, hydrogen cyanide, phenols, carbon monoxide, carbon dioxide and dense smoke. HF is extremely corrosive, its skin burns may not be immediately visible or painful, and exposure can be fatal by skin absorption, inhalation or ingestion[4]
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[20]Local exhaust to outside / fume hood — the SDS states local exhaust is preferred[4]
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust[1]Molten polymer causes thermal burns and must not be pulled off the skin. If HF is detected during a decomposition event, cut the heat but keep the extraction running, ventilate, and clear non-essential people from the area[4]
Post-Processing
Sanding & machiningSands poorly — gums rather than powders[10]Not documented
Gluing & solvent weldingCyanoacrylate; no common solvent welds polyamide[10]Not documented
Vapour / chemical smoothingNo practical vapour smoothing[10]Not documented
Dimensional accuracy & detailNot documentedThe processing window sits well below the 315 °C decomposition threshold, so nozzle temperature must be controlled rather than raised to chase flow[3][4]
Solvents & Solubility
Soluble inFormic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[21]THF, MEK, DMF, DMAc, NMP, DMSO and trimethyl phosphate dissolve 5–10 wt% at ambient — Arkema's active solvents, all lab reagents.[22]
Softened or crazed byZinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[21]Acetone, MIBK, cyclohexanone, butyl acetate and glycol ethers swell it; alkalis above pH 12 attack the homopolymer.[22][23]
Solvent welding & smoothing agentNone — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[21]None for the workshop — the active solvents (NMP, DMAc, DMF) are laboratory reagents used for casting membranes, not joints.[22]

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 PA6-GF25 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  2. Bambu Filament Technical Data Sheet — PA6-GF Bambu Lab · 2026-08 · tds
  3. FluorX PVDF Technical Data Sheet v3 3DXTech · 2026-08 · tds
  4. FluorX PVDF Safety Data Sheet v1.1 3DXTech · 2026-08 · msds
  5. Polymaker product catalogue Polymaker · 2026-08 · vendor
  6. SUNLU Nylon-6 Glass Fiber (PA6-GF) 3D Printer Filament 1 kg — product page SUNLU · 2026-08 · vendor
  7. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  8. YXPOLYER PA6-GF Black 1 kg — product page YXPOLYER · 2026-08 · vendor
  9. FluorX PVDF — product page 3DXTech · 2026-08 · vendor
  10. Nylon — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  11. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  12. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  13. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  14. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  15. Fiberon PA6-CF20 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  16. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  17. FDM PA6/66-GF30-FR — Material Data Sheet Stratasys · 2026-07 · tds
  18. TECAFLON PVDF natural — stock shape properties Ensinger · 2026-08 · tds
  19. TECAMID 66 GF30 black (PA66-GF30) — stock shape properties Ensinger · 2026-08 · tds
  20. 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
  21. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  22. Kynar PVDF — Design properties: solubility and irradiation (active and latent solvents) Arkema · 2026-08 · tds
  23. Kynar PVDF resin — chemical and fuel resistance Arkema · 2026-08 · tds