3D Printing Info

Filament comparison

ABS-FR vs PETG-GF

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

Flame-retardant ABS (FR-ABS) guideGlass-fibre polyester (PETG-GF / PET-GF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ABS-FR comparisonsMore PETG-GF comparisons
ABS-FR vs PETG-GF — documented properties and sources
PropertyFlame-retardant ABS (FR-ABS)ABSGlass-fibre polyester (PETG-GF / PET-GF)PETG
Market snapshot
Listing priceUSD/kg; dated snapshots$52.00/kg median; $44.99–$120.00/kg across 5 dated product listings$27.38/kg median; $18.99–$29.99/kg across 3 dated product listings
Identity & Market
Base polymer / chemistryABS with a flame-retardant package; 3DXTech rates the base resin UL 94 V-0[1]Glass-fibre reinforced polyester. Polymaker's Fiberon PET-GF15 uses a PET rather than a PETG matrix and carries 15 wt% glass fibre[2]
Densityg/cm³1.18 (ISO 1183) — above unfilled ABS at 1.05 because of the retardant loading[1][3]1.43 (Fiberon PET-GF15, ISO 1183)[2]
Typical priceUSD/kg1 kg-equivalent spools span 45–120; the middle of the market is about 52[4][5][6][7]1 kg spools cluster near 25[8][9]
Price range across brandsUSD/kg45–120 across brands; SUNLU 45, YXPOLYER 50, Coex 3D 52, 3DXTech 107 at 750 g pricing; the FR PC/ABS grade runs 120[4][5][6][7]19–30 across brands; ELEGOO 19, Polymaker Fiberon 30[8][9]
Market availability1–5Niche, a handful of specialist brands[4]Niche, a handful of specialist brands[8][9]
Spool sizes & diameters1.75 and 2.85 mm; 750 g spools[4]1.75 mm; 0.5 and 1 kg spools[9]
Typical applicationsElectrical enclosures and transport interiors that must meet a flammability rating[1]Stiff, dimensionally stable fixtures; the Fiberon grade is designed to be annealed for heat resistance[2]
Printing Parameters
Enclosure / chamber requirement1–5Enclosure recommended[10]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]
Warping tendency1–5High — enclosure needed for reliable large parts[10]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[14]Moderate — retraction tuning needed; Polymaker names stringing as PETG's common quirk[13]
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile[10]Not documented
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[10]Hardened steel required[2]
Abrasiveness1–5Non-abrasive[1]Highly abrasive — standard GF composite[2]
Nozzle clog risk1–5Low — 3DXTech lists no special nozzle concerns and no minimum layer height for its FR-ABS, only an 80 °C pre-dry[15]Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[16]
Heat-creep / jam sensitivity1–5Slightly sensitive[11]Slightly sensitive[17]
Hotend requirementNo special hot-end required[11]No special hot-end required[17]
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — the ABS matrix takes up 0.51–0.65 % saturated at 25 °C / 55 % RH and 3DXTech specifies a 80 °C, 4 h pre-dry[3][18][15]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]
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)MPa45 at break (printed XY, ISO 527)[1]59.9 ± 0.8 printed XY, ISO 527 (Fiberon PET-GF15)[2]
Young's modulusMPa1990 (printed XY, ISO 527)[1]4144 ± 133 printed XY, ISO 527 (Fiberon PET-GF15)[2]
Elongation at break%4 at break (printed XY, ISO 527) — well below the 10 % of unfilled 3DXTech ABS[1][20]4.0 ± 0.5 printed XY, ISO 527 (Fiberon PET-GF15)[2]
Flexural strengthMPa80 (printed XY, ISO 178)[1]104.2 ± 2.4 printed XY, ISO 178 (Fiberon PET-GF15)[2]
Flexural modulusMPa2250 (printed XY, ISO 178)[1]3705 ± 85 printed XY, ISO 178 (Fiberon PET-GF15)[2]
Charpy impact, notchedkJ/m²Not documented8.7 ± 0.6 printed XY, ISO 179, notched (Fiberon PET-GF15)[2]
Other impact dataNot documentedCharpy unnotched 27.2 ± 2.0 printed XY (Fiberon PET-GF15, ISO 179)[2]
Layer adhesion / Z tensileMPaNot documented48.2 ± 0.3 printed Z, ISO 527 (Fiberon PET-GF15)[2]
Brittleness1–5Moderate — elongation at break falls to 4 % from 10 % for the unfilled grade[1][20]Brittle — snaps with little warning; elongation 4.0 % in XY and 2.6 % in Z[2]
Creep resistance / sustained load1–5Moderate — no creep test found; Tg of 105 °C keeps room-temperature service far below softening[1][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; elongation at break falls to 4 % against 10 % for unfilled 3DXTech ABS[1][20]Below average — no GF-grade S-N curve; elongation at break falls to 4.0 % in XY against 5.2–9.3 % unfilled[2][24]
Elasticity / flexibility1–5Rigid[1]Rigid[2]
Z strength as % of XY%Not documented80 (Fiberon PET-GF15, printed Z against XY tensile)[2]
Thermal Properties
HDT at 0.45 MPa°CNot documented81.6 as printed, 133.7 after annealing (ISO 75, 0.45 MPa)[2]
HDT at 1.8 MPa°CNot documented71.8 as printed, 87.3 after annealing (ISO 75, 1.8 MPa)[2]
Glass transition (Tg)°C105 (DSC)[1]59.5 (DSC)[2]
Melting point / Vicat°CNot documented231.6 melting (DSC); Vicat 232.6 (ISO 306)[2]
Annealing responseNot documentedAnnealing lifts HDT at 0.45 MPa from 81.6 to 133.7 °C[2]
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 94UL 94 V-0 at 1.5 mm, rated on the base resin rather than the printed part[1]UL 94 HB at 1.5 mm (Fiberon PET-GF15)[2]
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[14]Not certified for food contact as filament[13]
Biodegradability / compostabilityNot biodegradable[14]Not biodegradable[13]
RecyclabilityMechanically recyclable but not accepted in household plastic collection[14]Not accepted in household plastic collection[13]
Electrical & ESD propertiesNot documentedSurface resistivity above 10¹² ohm — insulating (Fiberon PET-GF15, ANSI/ESD S11.11)[2]
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 hazardNot documentedGlass fibre is bound in the matrix; avoid inhaling sanding dust[2]
Post-Processing
Sanding & machiningSands well and takes filler before painting[14]Sands poorly — the material is tough and gums rather than powders[17]
Painting & finishingPaints readily after light abrasion[14]Not documented
Gluing & solvent weldingNot documentedCyanoacrylate; no common solvent welds PETG cleanly[17]
Vapour / chemical smoothingNot documentedNo practical vapour smoothing[17]
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[17]
Solvents & Solubility
Soluble inAcetone dissolves it — the basis of ABS slurry; so do MEK, THF, ethyl acetate, chloroform, dichloromethane and toluene.[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: about 20 min of vapour at 80 °C over 5 mm of liquid. Prusa measured layer adhesion more than doubled.[31]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. Firewire Flame Retardant ABS Technical Data Sheet 3DXTech · 2026-08 · tds
  2. Fiberon PET-GF15 Technical Data Sheet V1.0 Polymaker · 2026-08 · tds
  3. Bambu Filament Technical Data Sheet V3.0 — ABS Bambu Lab · 2026-08 · tds
  4. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  5. SUNLU ABS-FR (ABS Flame Retardant) 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  6. YXPOLYER ABS Flame-Retardant product page YXPOLYER · 2026-08 · vendor
  7. Flame Retardant Black ABS Coex 3D · 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. ABS — material basics Polymaker Wiki · 2026-08 · doc
  15. FIREWIRE FR-ABS — product page (print recommendations) 3DXTech · 2026-08 · doc
  16. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  17. PET and PETG — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  18. Polymaker ABS Pro Technical Data Sheet V1 (2026-05-29) Polymaker · 2026-05 · tds
  19. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  20. 3DXMAX ABS Technical Data Sheet 3DXTech · 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