3D Printing Info

Filament comparison

PA6-GF vs Breakaway

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

Glass-fibre PA6 (PA6-GF) guideBreak-away support guide

2 selected · all documented properties

Open these two in the interactive comparisonMore PA6-GF comparisonsMore Breakaway comparisons
PA6-GF vs Breakaway — documented properties and sources
PropertyGlass-fibre PA6 (PA6-GF)PABreak-away supportSUPPORT
Market snapshot
Listing priceUSD/kg; dated snapshots$59.98/kg median; $39.99–$130.00/kg across 6 dated product listings$42.49/kg median; $26.00–$79.98/kg across 4 dated product listings
Identity & Market
Base polymer / chemistryPA6 reinforced with chopped glass fibre — Polymaker's grade is 25 wt%[1][2]Break-away support compounds matched to a specific model material — Polymaker sells separate grades for PLA and for PA12[3][4]
Densityg/cm³1.14 (Bambu Lab) and 1.20 (Polymaker Fiberon), ISO 1183[2][1]1.22 (PolySupport for PLA) and 1.29 (PolySupport for PA12), ISO 1183[3][4]
Typical priceUSD/kg1 kg-equivalent spools span 40–130; the middle of the market is about 60[2][5][6]1 kg-equivalent spools span 26–80; the middle of the market is about 45[5][7][8]
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][9][6][10]26–80 across brands and grades; IEMAI 3D E-REMOVE 26, Polymaker PolySupport for PLA 40 at 750 g, YXPOLYER 45, PolySupport for PA12 80 at 500 g[5][7][8]
Market availability1–5Stocked by most mainstream brands[2][5][9][6][10]Available from several mainstream brands[5][9]
Spool sizes & diameters1.75 and 2.85 mm; 0.5, 0.75 and 1 kg spools[5][9][2]1.75 and 2.85 mm; 0.5 and 0.75 kg spools[5]
Typical applicationsStiff, heat-resistant structural parts where a matte finish and lower cost beat carbon fibre[2][1]Support that peels off by hand, avoiding the moisture handling and dissolution time that soluble supports demand[3]
Printing Parameters
Nozzle temperature°C260–290 (Bambu Lab)[2]220–230 (PolySupport for PLA)[3]
Bed temperature°CNot documented25–60 (PolySupport for PLA)[3]
Enclosure / chamber requirement1–5Enclosure required (passive) — Bambu Lab specifies a 45–60 °C chamber[2]Open frame is fine[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[11][12]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][13]4–12 at Polymaker's 50–150 mm/s on a 0.4 mm nozzle at 0.2 mm layer[3]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[11]Not documented
Stringing / oozing tendency1–5Moderate — retraction tuning needed[12]Not documented
Overall printing difficulty1–5Expert / industrial hardware only[2][14]Easy — minor profile tuning[3]
Extruder requirement0.6 mm nozzle recommended by Bambu Lab; 0.4 and 0.8 also supported[2]A second extruder or a tool changer[3]
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[3]
Abrasiveness1–5Highly abrasive — standard GF composite; Polymaker puts brass nozzle life at roughly 9 h on PA6-GF25[1]Non-abrasive[3]
Nozzle clog risk1–5Very high — frequent jams without careful setup[14]Moderate — needs dry filament and a clean nozzle; Polymaker specifies a 55 °C dry for the PLA grade and warns brass nozzle life falls to about 9 h on the PA12 grade[3][4]
Heat-creep / jam sensitivity1–5Moderate — good heatbreak cooling needed[11]Not documented
Hotend requirementMay require an all-metal hot end (Simplify3D)[11]Not documented
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]Moderate — 0.64 % equilibrium water absorption (PolySupport for PLA)[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]0.64 equilibrium water absorption (Polymaker PolySupport for PLA)[3]
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[15]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][15]Not a structural material; no dry-versus-conditioned data is published[14]
Storage requirementSealed below 20 % RH with desiccant[14]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[16][17]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][18]Not documented
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][18]Not documented
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]Not documented
Flexural modulusMPa3670 ± 140 printed XY, ISO 178 (Bambu Lab)[2]Not documented
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][18]Not documented
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][18]Not documented
Brittleness1–5Brittle — snaps with little warning; elongation at break 2.4 % in XY[1]Not documented
Hardness (scale-specific)Shore A / Shore D / RockwellRockwell M88 / R117 on extruded PA66-GF30 stock (ASTM D785)[19]Not documented
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]Not documented
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][18]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][18]43 (ISO 75, 0.45 MPa, PolySupport for PA12). Polymaker's sheet prints a higher figure at the higher load, which is physically inverted; treat both HDT numbers as approximate[4]
HDT at 1.8 MPa°C157 (Polymaker Fiberon) and 158 (Bambu Lab), ISO 75 at 1.8 MPa[2][1]53 (ISO 75, 1.8 MPa, PolySupport for PA12) — printed above the 0.45 MPa figure on Polymaker's own sheet, which cannot be right; treat both as approximate[4]
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][18]Not documented
Melting point / Vicat°C214.5 (Polymaker Fiberon) and 219 (Bambu Lab) melting, DSC; Vicat 210–212 (ISO 306)[2][1]Vicat 171 (PolySupport for PA12, ISO 306)[4]
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][18]Not documented
Flammability / UL 94Flammable; no UL 94 rating published for the grades surveyed[16]Not documented
Environment & Chemical
UV resistance1–5Months outdoors before embrittlement — unstabilised polyamide yellows under UV[12]Not documented
Chemical resistanceWithstands oils, fuels and alkalis[12]Not documented
Water / humidity resistance in service1–5Absorbs water, properties shift[15]Not documented
Food contactNot food-contact certified as filament[12]Not documented
Biodegradability / compostabilityNot biodegradable[12]Not documented
RecyclabilityNot accepted in household plastic collection[12]Not documented
Electrical & ESD propertiesSurface resistivity above 10¹² ohm — insulating (Polymaker Fiberon, ANSI/ESD S11.11)[1]Surface resistance above 10^13 ohm/sq (ASTM D257, THERMAX HTS2 and MTS1)[20][21]
Health & Safety
Fume toxicity1–5Moderate — measurable VOCs and UFPs, ventilation advised[22]Low hazard — minimal VOC and particle emission; none of these materials was in the chamber study[22]
VOC emission rateµg/minUp to 180 caprolactam, the dominant VOC from nylon and the largest single-VOC rate in the study[22]Not documented
Ultrafine-particle emission rateparticles/min≈2 × 10⁸ median for nylon — low for particles despite the highest VOC mass measured[22]Not documented
Hazardous species emittedCaprolactam, at up to 180 µg/min from nylon filament[22]Not documented
Ventilation / filtration requirement1–5Ventilated room or enclosure recommended[22]Open a window / occasional ventilation[22]
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust[1]Not documented
Post-Processing
Sanding & machiningSands poorly — gums rather than powders[11]Not documented
Gluing & solvent weldingCyanoacrylate; no common solvent welds polyamide[11]Not documented
Vapour / chemical smoothingNo practical vapour smoothing[11]Not documented
Support material pairingNot documentedThis is the support material. Polymaker publishes an adhesion matrix per model material, from very good to unusable, because break-away supports only work against the polymer they were matched to[3][4]
Solvents & Solubility
Soluble inFormic acid, phenol, m-cresol and hexafluoroisopropanol dissolve the matrix at 23 °C, leaving the fibre; laboratory reagents.[23]None — break-away support is removed mechanically; 3DXTech lists no water or solvent route for it.[24]
Softened or crazed byZinc chloride solutions stress-crack the nylon matrix, alcoholic calcium chloride dissolves it, mineral acids attack it.[23]Not documented
Solvent welding & smoothing agentNone — nylon's only solvents (formic acid, phenol, HFIP) degrade the part, and the fibre blocks surface flow anyway.[23]None — there is no solvent to weld or smooth with.[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. 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. PolySupport Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  4. PolySupport for PA12 Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  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. YXPOLYER Breakaway Support Filament 1 kg Black — product page YXPOLYER · 2026-08 · vendor
  8. IEMAI 3D E-REMOVE breakaway support filament — store page IEMAI 3D · 2026-08 · vendor
  9. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  10. YXPOLYER PA6-GF Black 1 kg — product page YXPOLYER · 2026-08 · vendor
  11. Nylon — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  12. PA (Nylon) — material basics Polymaker Wiki · 2026-08 · doc
  13. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  14. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  15. Moisture Conditioning — effect on printed nylon properties Polymaker Wiki · 2026-08 · doc
  16. Fiberon PA6-CF20 Technical Data Sheet V1.1 Polymaker · 2024-12 · tds
  17. PolyMide CoPA Technical Data Sheet V5.4 (dry and wet status blocks) Polymaker · 2024-11 · tds
  18. FDM PA6/66-GF30-FR — Material Data Sheet Stratasys · 2026-07 · tds
  19. TECAMID 66 GF30 black (PA66-GF30) — stock shape properties Ensinger · 2026-08 · tds
  20. THERMAX HTS2 Break Away Support Technical Data Sheet v1.0 3DXTech · 2026-08 · tds
  21. THERMAX MTS1 Break Away Support Technical Data Sheet v1.0 3DXTech · 2026-08 · tds
  22. 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
  23. Ultramid Nylon Chemical Resistance guide (unmodified PA6 B27E and PA66 A27E) BASF · 2026-08 · tds
  24. THERMAX HTS1 — product page 3DXTech · 2026-08 · vendor