3D Printing Info

Filament comparison

ABS-GF vs PETG-GF

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

Glass-fibre ABS (ABS-GF) guideGlass-fibre polyester (PETG-GF / PET-GF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ABS-GF comparisonsMore PETG-GF comparisons
ABS-GF vs PETG-GF — documented properties and sources
PropertyGlass-fibre ABS (ABS-GF)ABSGlass-fibre polyester (PETG-GF / PET-GF)PETG
Market snapshot
Listing priceUSD/kg; dated snapshots$34.99/kg median; $24.49–$73.33/kg across 4 dated product listings$27.38/kg median; $18.99–$29.99/kg across 3 dated product listings
Identity & Market
Base polymer / chemistryABS reinforced with chopped glass fibre — 3DXTech's grade is nominally 10 wt%[1][2]Glass-fibre reinforced polyester. Polymaker's Fiberon PET-GF15 uses a PET rather than a PETG matrix and carries 15 wt% glass fibre[3]
Densityg/cm³1.08 (Bambu Lab) and 1.15 (3DXTech), ISO 1183[2][1]1.43 (Fiberon PET-GF15, ISO 1183)[3]
Typical priceUSD/kg1 kg-equivalent spools span 24–73; the middle of the market is about 35[4][5][6][7]1 kg spools cluster near 25[8][9]
Price range across brandsUSD/kg24–73 across brands; Siraya Tech 24, Bambu Lab 30, SUNLU 40, 3DXTech 73[4][5][6][7]19–30 across brands; ELEGOO 19, Polymaker Fiberon 30[8][9]
Market availability1–5Available from several mainstream brands[4][5]Niche, a handful of specialist brands[8][9]
Spool sizes & diameters1.75 and 2.85 mm; 750 g and 1 kg spools[5][4]1.75 mm; 0.5 and 1 kg spools[9]
Typical applicationsStiff, dimensionally stable enclosure and tooling parts; Bambu Lab notes the fibre blurs layer lines into a matte finish[2]Stiff, dimensionally stable fixtures; the Fiberon grade is designed to be annealed for heat resistance[3]
Printing Parameters
Nozzle temperature°C240–280 (Bambu Lab)[2]Not documented
Bed temperature°C80–100 (Bambu Lab)[2]Not documented
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[2][10]Not documented
Recommended chamber temperature°C45–60 (Bambu Lab)[2]Not documented
Part cooling fan0–80 % (Bambu Lab)[2]Not documented
Bed surface & adhesion aidClean the plate and apply glue; Simplify3D also lists Kapton tape and ABS slurry[10][11]Textured PEI, satin or powder-coated sheets; on smooth PEI a glue stick acts as a release agent[12][13]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s14 at Bambu Lab's 180 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[2][14]Not documented
Warping tendency1–5Moderate — needs adhesion aid or draught shield; Bambu Lab positions the fibre as reducing warping[2]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[10]Needs the right surface or a thin adhesive — the problem is releasing the part, not sticking it[12][13]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[15]Moderate — retraction tuning needed; Polymaker names stringing as PETG's common quirk[13]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile; hardened nozzle mandatory[10]Not documented
Hardware Wear & Reliability
Nozzle hardness required1–4Hardened steel required[10]Hardened steel required[3]
Abrasiveness1–5Highly abrasive — standard GF composite[10]Highly abrasive — standard GF composite[3]
Nozzle clog risk1–5Moderate — needs dry filament and a clean nozzle; 3DXTech specifies a hardened 0.4 mm minimum nozzle and 0.25 mm layers or higher for the glass-filled grade[16][17]Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[17]
Heat-creep / jam sensitivity1–5Slightly sensitive[11]Slightly sensitive[18]
Hotend requirementNo special hot-end required[11]No special hot-end required[18]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.53 % saturated at 25 °C / 55 % RH (Bambu Lab)[2]Moderate (0.3–0.8 %) — the PETG matrix reaches 0.40 % saturated at 25 °C / 55 % RH; no glass-filled grade publishes its own figure[12]
Equilibrium moisture content at ~50 % RH%0.53 saturated at 25 °C / 55 % RH (Bambu Lab)[2]Not documented
Drying temperature & time80 °C for 8 h (Bambu Lab)[2]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[19]Bubbling and popping at the nozzle, stringing and a rough surface[19]
Effect of moisture on strengthPolymaker rates ABS moderate-sensitivity and publishes no dry-versus-conditioned figures; absorbed water flashes to steam in the hotend and shows as bubbling and poor layer adhesion[19]Polymaker groups PETG with nylon, PVA and TPU as highly hygroscopic; no dry-versus-conditioned strength figures are published for this grade and the loss shows as bubbling and poor layer adhesion[19]
Storage requirementSealed with desiccant; Polymaker rates ABS moderate-sensitivity[19]Sealed with desiccant; Polymaker groups PETG with the highly hygroscopic materials[19][13]
Mechanical Properties
Tensile strength (XY)MPa36 ± 3 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 68 at break[2][1]59.9 ± 0.8 printed XY, ISO 527 (Fiberon PET-GF15)[3]
Young's modulusMPa3160 ± 170 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 4210[2][1]4144 ± 133 printed XY, ISO 527 (Fiberon PET-GF15)[3]
Elongation at break%6.3 ± 1.2 printed XY, ISO 527 (Bambu Lab); 3DXTech quotes 2 at break[2][1]4.0 ± 0.5 printed XY, ISO 527 (Fiberon PET-GF15)[3]
Flexural strengthMPa68 ± 4 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 70[2][1]104.2 ± 2.4 printed XY, ISO 178 (Fiberon PET-GF15)[3]
Flexural modulusMPa2860 ± 130 printed XY, ISO 178 (Bambu Lab); 3DXTech quotes 4420[2][1]3705 ± 85 printed XY, ISO 178 (Fiberon PET-GF15)[3]
Charpy impact, notchedkJ/m²4.2 ± 1.1 printed XY, ISO 179, notched (Bambu Lab)[2]8.7 ± 0.6 printed XY, ISO 179, notched (Fiberon PET-GF15)[3]
Other impact dataCharpy unnotched 14.5 ± 1.5 printed XY (Bambu Lab, ISO 179)[2]Charpy unnotched 27.2 ± 2.0 printed XY (Fiberon PET-GF15, ISO 179)[3]
Layer adhesion / Z tensileMPa29 ± 3 printed Z, ISO 527 (Bambu Lab)[2]48.2 ± 0.3 printed Z, ISO 527 (Fiberon PET-GF15)[3]
Brittleness1–5Brittle — snaps with little warning; notched Charpy falls from 21.5 to 4.2 kJ/m² against unfilled Bambu Lab ABS[2][20]Brittle — snaps with little warning; elongation 4.0 % in XY and 2.6 % in Z[3]
Creep resistance / sustained load1–5Good — no creep test found; chopped glass fibre lifts modulus to 3160 MPa against 2200 for unfilled Bambu Lab ABS[2][20]Below average — no GF-grade creep test; the CF grades sagged to 14.8–16.7 mm over 5 days at 1.25 kg against 17.1–20.4 mm unfilled[21][22][23]
Fatigue / repeated-flex resistance1–5Below average — no S-N curve found; notched Charpy falls to 4.2 kJ/m² against 21.5 for unfilled Bambu Lab ABS[2][20]Below average — no GF-grade S-N curve; elongation at break falls to 4.0 % in XY against 5.2–9.3 % unfilled[3][24]
Elasticity / flexibility1–5Rigid[2]Rigid[3]
Z strength as % of XY%81 (Bambu Lab, printed Z against XY tensile)[2]80 (Fiberon PET-GF15, printed Z against XY tensile)[3]
Thermal Properties
HDT at 0.45 MPa°C99 (ISO 75, 0.45 MPa, Bambu Lab) against 87 for unfilled Bambu Lab ABS[2][20]81.6 as printed, 133.7 after annealing (ISO 75, 0.45 MPa)[3]
HDT at 1.8 MPa°C88 (ISO 75, 1.8 MPa, Bambu Lab) against 84 for unfilled Bambu Lab ABS[2][20]71.8 as printed, 87.3 after annealing (ISO 75, 1.8 MPa)[3]
Glass transition (Tg)°CNot documented59.5 (DSC)[3]
Melting point / Vicat°CNot documented231.6 melting (DSC); Vicat 232.6 (ISO 306)[3]
Annealing responseNot documentedAnnealing lifts HDT at 0.45 MPa from 81.6 to 133.7 °C[3]
Thermal expansion (CTE)µm/m·KNot documented20 along the print bead and 63–74 in the build direction at 30 °C (30 wt% GF, large-format printed, TMA)[25]
Flammability / UL 94Not documentedUL 94 HB at 1.5 mm (Fiberon PET-GF15)[3]
Environment & Chemical
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[26]Withstands acids, alkalis, oils and UV exposure[13]
Food contactNot food safe — Polymaker cites potential chemical leaching[15]Not certified for food contact as filament[13]
Biodegradability / compostabilityNot biodegradable[15]Not biodegradable[13]
RecyclabilityMechanically recyclable but not accepted in household plastic collection[15]Not accepted in household plastic collection[13]
Electrical & ESD propertiesNot documentedSurface resistivity above 10¹² ohm — insulating (Fiberon PET-GF15, ANSI/ESD S11.11)[3]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[27][10]Moderate — measurable VOCs and UFPs, ventilation advised[27]
VOC emission rateµg/min12–113 styrene, the dominant VOC from every ABS and HIPS combination tested[27]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[27]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[27][10]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration — an enclosure alone cut measured UFP by only about 35 %[27][10]Open a window / occasional ventilation[27]
Dust & fibre handling hazardGlass fibre is bound in the matrix; avoid inhaling sanding dust[1]Glass fibre is bound in the matrix; avoid inhaling sanding dust[3]
Post-Processing
Sanding & machiningSands well and takes filler before painting[15]Sands poorly — the material is tough and gums rather than powders[18]
Painting & finishingPaints readily after light abrasion[15]Not documented
Gluing & solvent weldingNot documentedCyanoacrylate; no common solvent welds PETG cleanly[18]
Vapour / chemical smoothingNot documentedNo practical vapour smoothing[18]
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a dedicated Support for ABS[28][10]Prints its own supports; Polymaker rates PolyDissolve S1 for PETG[18]
Dimensional accuracy & detailBambu Lab describes a smooth matte finish with micro-spot gloss that blurs layer lines[2]Not documented
Solvents & Solubility
Soluble inAcetone dissolves the resin and leaves the fibre as sludge; MEK, THF, ethyl acetate and chlorinated solvents do the same.[29][26]No common workshop solvent; dichloromethane — a carcinogen — dissolves the matrix surface, 1,2-dichloroethane destroys it in a week.[30][31]
Softened or crazed byPetrol and perchloroethylene soften it and benzene attacks it; d-limonene disrupts layer adhesion in some ABS and ASA grades.[29][32]Acetone (+16 % weight over 1 year at 23 °C), ethyl acetate, toluene and DMF swell and soften it; methanol crazes it.[30]
Solvent welding & smoothing agentAcetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface.[31][26]Dichloromethane reaches only the resin, so the fibre is left standing proud of the surface. Controlled carcinogen.[31]

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. FibreX ABS+GF10 Glass Fiber ABS Technical Data Sheet 3DXTech · 2026-08 · tds
  2. Bambu Filament Technical Data Sheet V1.0 — ABS-GF Bambu Lab · 2026-08 · tds
  3. Fiberon PET-GF15 Technical Data Sheet V1.0 Polymaker · 2026-08 · tds
  4. ABS-GF — product page Bambu Lab US Store · 2026-08 · vendor
  5. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  6. Siraya Tech Fibreheart ABS-GF Filament product page Siraya Tech · 2026-08 · vendor
  7. SUNLU ABS-GF (ABS Glass Fiber) 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  8. ELEGOO product catalogue ELEGOO · 2026-08 · vendor
  9. Polymaker product catalogue Polymaker · 2026-08 · vendor
  10. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  11. ABS — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  12. Prusament PETG Technical Datasheet v1.1 Prusa Polymers · 2022-02 · tds
  13. PETG — material basics Polymaker Wiki · 2026-08 · doc
  14. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  15. ABS — material basics Polymaker Wiki · 2026-08 · doc
  16. FIBREX ABS+GF — product page (print recommendations) 3DXTech · 2026-08 · doc
  17. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  18. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  19. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  20. Bambu Filament Technical Data Sheet V3.0 — ABS Bambu Lab · 2026-08 · tds
  21. Extrudr PETG vs PCTG vs XPETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  22. Prusament PETG-CF vs PETG V0 vs PETG — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  23. BambuLab PETG Basic vs Translucent vs PETG-CF — results spreadsheet My Tech Fun (Igor Gaspar) · 2026-08 · test
  24. Mechanical Properties of Additively Manufactured Polymeric Materials — PLA and PETG — For Biomechanical Applications Polymers 16(13):1868 · 2024-06 · paper
  25. Effects of Fiber Orientation on the Coefficient of Thermal Expansion of Fiber-Filled Polymer Systems in Large Format Polymer Extrusion-Based Additive Manufacturing Materials 15(8):2764 · 2022-04 · paper
  26. PolyLite ABS Technical Data Sheet (V5.5 served at this URL) Polymaker · 2024-11 · tds
  27. 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
  28. HIPS — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  29. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  30. Eastman Spectar copolyester — Chemical resistance (unstressed bars, 1 year at 23 °C) Eastman Chemical Company · 2026-08 · tds
  31. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  32. HIPS — Knowledge Base Prusa Research · 2026-08 · doc