3D Printing Info

Filament comparison

ABS-FR vs PP-CF

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

Flame-retardant ABS (FR-ABS) guideCarbon-fibre PP (PP-CF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ABS-FR comparisonsMore PP-CF comparisons
ABS-FR vs PP-CF — documented properties and sources
PropertyFlame-retardant ABS (FR-ABS)ABSCarbon-fibre PP (PP-CF)POLYOLEFIN
Market snapshot
Listing priceUSD/kg; dated snapshots$52.00/kg median; $44.99–$120.00/kg across 5 dated product listings$107.68/kg median; $57.13–$120.00/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]Polypropylene reinforced with chopped carbon fibre[2][3]
Densityg/cm³1.18 (ISO 1183) — above unfilled ABS at 1.05 because of the retardant loading[1][4]0.91 (Prusament PP Carbon Fiber, ISO 1183)[2]
Typical priceUSD/kg1 kg-equivalent spools span 45–120; the middle of the market is about 52[5][6][7][8]1 kg-equivalent spools span 57–138; the middle of the market is about 108[9][5][10]
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[5][6][7][8]57–138 across brands; Reli3D 57 at 700 g on Amazon, Prusament 108 direct from Prusa and 138 at Printed Solid, 3DXTech CarbonX PP+CF 120[9][11][5][10]
Market availability1–5Niche, a handful of specialist brands[5]Available from several mainstream brands[5][11]
Spool sizes & diameters1.75 and 2.85 mm; 750 g spools[5]1.75 mm; 0.65 kg spools[11][5]
Typical applicationsElectrical enclosures and transport interiors that must meet a flammability rating[1]Lightweight chemical-resistant parts, automotive clips and ducting that must survive above 150 °C[12]
Diameter tolerance± mmNot documented±0.04 (Prusament)[2]
Printing Parameters
Nozzle temperature°CNot documented270 ± 10 (Prusament)[2]
Bed temperature°CNot documented85 ± 10 (Prusament)[2]
Enclosure / chamber requirement1–5Enclosure recommended[13]Enclosure recommended — Simplify3D lists an enclosure as a hardware requirement and Polymaker advises one below 70 °C ambient to stop warping and cracking[14][15]
Part cooling fanNot documentedOff — Prusa runs 0 % except 100 % on bridges[2]
Bed surface & adhesion aidClean the plate and apply glue; Simplify3D also lists Kapton tape and ABS slurry[13][16]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/sNot documented3.2 at Prusa's 40 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[2][17]
Warping tendency1–5High — enclosure needed for reliable large parts[13]High — enclosure needed for reliable large parts; Prusa recommends a brim[2]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[13]Very difficult — special plates or slurry required[2]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[18]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile[13]Advanced — enclosure, hardware upgrades, tuning; hardened nozzle mandatory[2]
Extruder requirementNot documentedPrusa states a hardened nozzle is necessary and recommends a brim[2]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[13]Hardened steel required — Prusa states plainly that a hardened nozzle is necessary[2]
Abrasiveness1–5Non-abrasive[1]Highly abrasive — standard CF 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[19]Moderate — needs dry filament and a clean nozzle; 3DXTech specifies a hardened 0.4 mm minimum nozzle and 0.25 mm layers or higher, and Prusa lists composites as a higher clogging risk[3][20]
Heat-creep / jam sensitivity1–5Slightly sensitive[16]Not documented
Hotend requirementNo special hot-end required[16]Not documented
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[4][21][19]Negligible (<0.1 % EMC) — Prusa measures 0.03 % in 24 h and 0.04 % in 7 days on its PP composite, the lowest figures it publishes for any filament[2]
Equilibrium moisture content at ~50 % RH%Not documented0.03 after 24 h and 0.04 after 7 days at 24 °C / 22 % RH (Prusa Polymers)[2]
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[22]Not documented
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[22]Not applicable in practice at 0.04 % equilibrium uptake[2]
Storage requirementSealed with desiccant; Polymaker rates ABS moderate-sensitivity[22]No special storage needed[2]
Mechanical Properties
Tensile strength (XY)MPa45 at break (printed XY, ISO 527)[1]21 ± 0.4 filament tensile yield (Prusament, ISO 527)[2]
Young's modulusMPa1990 (printed XY, ISO 527)[1]Not documented
Elongation at break%4 at break (printed XY, ISO 527) — well below the 10 % of unfilled 3DXTech ABS[1][23]Not documented
Flexural strengthMPa80 (printed XY, ISO 178)[1]Not documented
Flexural modulusMPa2250 (printed XY, ISO 178)[1]Not documented
Charpy impact, notchedkJ/m²Not documented14.5 ± 0.3 printed horizontal and 10.5 ± 0.8 printed vertical XZ (ISO 179-1, notched)[2]
Brittleness1–5Moderate — elongation at break falls to 4 % from 10 % for the unfilled grade[1][23]Tough — absorbs impact, yields before breaking[2]
Hardness (scale-specific)Shore A / Shore D / RockwellNot documentedRockwell R102 (and M95) on extruded unfilled PP stock (ASTM D785); no figure is published for a carbon-fibre PP filament[24]
Creep resistance / sustained load1–5Moderate — no creep test found; Tg of 105 °C keeps room-temperature service far below softening[1][23]Not documented
Fatigue / repeated-flex resistance1–5Below average — no S-N curve found; elongation at break falls to 4 % against 10 % for unfilled 3DXTech ABS[1][23]Good[25]
Elasticity / flexibility1–5Rigid[1]Slightly flexible in thin sections[2]
Thermal Properties
HDT at 0.45 MPa°CNot documented158 (ISO 75, 0.45 MPa) — far above unfilled PP and above most engineering filaments[2]
HDT at 1.8 MPa°CNot documented115 (ISO 75, 1.8 MPa)[2]
Glass transition (Tg)°C105 (DSC)[1]Not documented
Flammability / UL 94UL 94 V-0 at 1.5 mm, rated on the base resin rather than the printed part[1]Not documented
Environment & Chemical
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[26]Excellent against acids, alkalis and most solvents[15]
Water / humidity resistance in service1–5Not documentedExcellent — essentially unaffected[2]
Food contactNot food safe — Polymaker cites potential chemical leaching[18]Not documented
Biodegradability / compostabilityNot biodegradable[18]Not documented
RecyclabilityMechanically recyclable but not accepted in household plastic collection[18]Not documented
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[27][13]Low hazard — minimal VOC and particle emission. Inferred: no polyolefin was among the nine filaments in the Azimi chamber study, so this is a family-level judgement rather than a measurement[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][13]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration — an enclosure alone cut measured UFP by only about 35 %[27][13]Open a window / occasional ventilation. Inferred — no polyolefin was measured in the chamber study[27]
Dust & fibre handling hazardNot documentedCarbon fibre is bound in the matrix; sanding dust should not be inhaled[2]
Post-Processing
Sanding & machiningSands well and takes filler before painting[18]Not documented
Painting & finishingPaints readily after light abrasion[18]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a dedicated Support for ABS[28][13]Not documented
Solvents & Solubility
Soluble inAcetone dissolves it — the basis of ABS slurry; so do MEK, THF, ethyl acetate, chloroform, dichloromethane and toluene.[29][26]None at room temperature; chloroform dissolves the matrix at 60 °C and xylene at about 118 °C, leaving the fibre.[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]Xylene, decalin, CCl4 and chlorobenzene are heavily absorbed at 20 °C; oleum, chlorosulphonic acid and bromine destroy 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.[33]None — nothing softens PP at room temperature, so joints have to be welded thermally rather than chemically.[30]

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. Prusament PP Carbon Fiber Technical Datasheet v1.0 Prusa Polymers · 2024-11 · tds
  3. CarbonX PP+CF — product page 3DXTech · 2026-08 · vendor
  4. Bambu Filament Technical Data Sheet V3.0 — ABS Bambu Lab · 2026-08 · tds
  5. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  6. SUNLU ABS-FR (ABS Flame Retardant) 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  7. YXPOLYER ABS Flame-Retardant product page YXPOLYER · 2026-08 · vendor
  8. Flame Retardant Black ABS Coex 3D · 2026-08 · vendor
  9. Prusament PP Carbon Fiber Black 650g — product page Prusa Research · 2026-08 · vendor
  10. Reli3D Carbon Fiber PP Filament 1.75 mm 700 g Black — Amazon listing Amazon.com · 2026-08 · vendor
  11. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  12. Prusament PP Carbon Fiber — material page Prusa Polymers · 2026-08 · doc
  13. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  14. Polypropylene — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  15. PP — material basics Polymaker Wiki · 2026-08 · doc
  16. ABS — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  17. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  18. ABS — material basics Polymaker Wiki · 2026-08 · doc
  19. FIREWIRE FR-ABS — product page (print recommendations) 3DXTech · 2026-08 · doc
  20. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  21. Polymaker ABS Pro Technical Data Sheet V1 (2026-05-29) Polymaker · 2026-05 · tds
  22. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  23. 3DXMAX ABS Technical Data Sheet 3DXTech · 2026-08 · tds
  24. TECAFINE PP natural — stock shape properties Ensinger · 2026-08 · tds
  25. Centaur PP Technical Data Sheet Formfutura · 2026-08 · tds
  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. Pro-fax and Moplen polypropylene — Chemical Resistance Guide (20, 60 and 100 °C) LyondellBasell · 2026-08 · tds
  31. US 5,278,282 Polymer recycling by selective dissolution — xylene dissolution temperatures Nauman & Lynch, Rensselaer Polytechnic Institute · 1994-01 · paper
  32. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  33. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc