3D Printing Info

Filament comparison

ASA vs PP-GF

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

ASA guideGlass-fibre PP (PP-GF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA comparisonsMore PP-GF comparisons
ASA vs PP-GF — documented properties and sources
PropertyASAASAGlass-fibre PP (PP-GF)POLYOLEFIN
Market snapshot
Listing priceUSD/kg; dated snapshots$28.98/kg median; $17.99–$50.00/kg across 14 dated product listings$49.09/kg median; $46.27–$86.01/kg across 3 dated product listings
Identity & Market
Base polymer / chemistryAcrylonitrile styrene acrylate — ABS with the butadiene rubber phase replaced by an acrylate rubber that has no UV-vulnerable double bonds[1][2]Polypropylene reinforced with chopped glass fibre[3][4]
Densityg/cm³1.05 (Bambu Lab) to 1.13 (PolyLite ASA), ISO 1183; Prusament 1.07[5][6][2]1.12 (Prusament PP Glass Fiber, ISO 1183) — the glass lifts it above water[3]
Typical priceUSD/kg1 kg spools cluster near 30[7][8][9]1 kg-equivalent spools cluster near 49[10][11][12]
Price range across brandsUSD/kg18–50 across brands; IEMAI 18, SUNLU 18, Ambrosia 23, Polymaker 26, Bambu Lab 30, YXPOLYER 30, Prusament 41, 3DXTech 50[13][8][7][14][9][15][16][17][18]46-86 across brands; BCN3D PP GF30 46 at 700 g, BASF Ultrafuse PP GF30 49 at 2.2 kg, Prusament PP Glass Fiber 86 at 850 g[10][11][12]
Market availability1–5Stocked by most mainstream brands[7][8][15][9]Available from several mainstream brands[10][11][12]
Spool sizes & diameters1.75 and 2.85 mm; 0.8, 1, 4 and 10 kg spools[15][9][7]1.75 and 2.85 mm; 700 g, 850 g and 2.2 kg spools[10][11][12]
Typical applicationsOutdoor fittings, signage, automotive exterior trim and anything that has to hold colour and strength in sunlight[19][1]Stiff, chemically resistant parts where PP-CF's cost or conductivity is unwanted[4]
Diameter tolerance± mm±0.04 (Prusament)[2]±0.04 (Prusament)[3]
Printing Parameters
Nozzle temperature°C230–270 across brands; Prusament 260 ± 10, Bambu Lab 240–270, PolyLite 230–260[5][6][2]245 ± 10 (Prusament) — 25 °C below the carbon-fibre grade[3][20]
Bed temperature°C75–110; Prusament 110 ± 5, Bambu Lab 80–100, PolyLite 75–95[5][6][2]95 ± 10 (Prusament)[3]
Enclosure / chamber requirement1–5Enclosure recommended — Polymaker calls a chamber needed at ambient temperature, Bambu Lab requires an enclosed printer and rules out its P1P and A-series machines[6][21]Enclosure recommended — Simplify3D lists an enclosure as a hardware requirement and Polymaker advises one below 70 °C ambient to stop warping and cracking[22][23]
Recommended chamber temperature°C45–60 (Bambu Lab)[5]Not documented
Part cooling fanLow — Prusament 30 % within a 0–50 % range, Bambu Lab 0–80 %, PolyLite off[2][5][6]Off — Prusa runs 0 % except 100 % on bridges[3]
Bed surface & adhesion aidSatin, smooth PEI or powder-coated sheet with a glue stick; Prusa advises a 3 mm or taller brim on large parts[2][21]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s10–16 (PrusaSlicer guidance for ABS/ASA)[24]4 at Prusa's 50 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[3][24]
Warping tendency1–5High — enclosure needed for reliable large parts; Prusa recommends a tall brim and Bambu Lab attributes cracking to cooling stress exceeding interlayer adhesion[2][21]High — enclosure needed for reliable large parts; Prusa recommends a brim[3]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[2][21]Very difficult — special plates or slurry required[3]
Stringing / oozing tendency1–5Slight[6]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile[21][2]Advanced — enclosure, hardware upgrades, tuning; hardened nozzle mandatory[3]
Extruder requirementNot documentedPrusa states a hardened nozzle is necessary and recommends a brim[3]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[21]Hardened steel required[3]
Abrasiveness1–5Non-abrasive[21]Highly abrasive — standard GF composite[3]
Nozzle clog risk1–5Low — no special hot-end required and clogging is not among the listed drawbacks; Prusa lists no drybox and no hardened nozzle[25][26]Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites[27]
Heat-creep / jam sensitivity1–5Slightly sensitive[25]Not documented
Hotend requirementNo special hot-end required[25]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5Moderate — 0.45 % saturated at 25 °C / 55 % RH (Bambu Lab) and 0.40 % equilibrium (Polymaker); Prusa measures only 0.17 % after 7 days at 22 % RH[5][6][2]Low (0.1–0.3 %) — 0.11 % at both 24 h and 7 days, higher than the carbon-fibre grade's 0.04 % but still very low[3][20]
Equilibrium moisture content at ~50 % RH%0.45 saturated at 25 °C / 55 % RH (Bambu Lab); 0.40 equilibrium (Polymaker); 0.17 after 7 days at 24 °C / 22 % RH (Prusa)[5][6][2]0.11 after 24 h and 0.11 after 7 days at 24 °C / 22 % RH (Prusa Polymers)[3]
Drying temperature & time80 °C for 8 h (Bambu Lab); 70 °C for 7 h (Polymaker)[5][6]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing, rough surface and weak layers[28]Not documented
Effect of moisture on strengthNo dry-versus-conditioned figures are published for ASA; Polymaker groups the styrenics as moderate-sensitivity and the loss shows as poor layer adhesion rather than a stated strength delta[28]Not applicable in practice at 0.11 % equilibrium uptake[3]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[28]No special storage needed[3]
Mechanical Properties
Tensile strength (XY)MPa37 ± 3 (Bambu Lab) to 43.8 (PolyLite) printed XY, ISO 527; Prusament 42 ± 1 at yield; Formfutura quotes 47.5 at yield[5][6][2][29]46.6 ± 1.3 filament tensile yield (Prusament, ISO 527) — more than double the carbon-fibre grade's 21[3][20]
Young's modulusMPa2379 (PolyLite) to 2450 (Bambu Lab) printed XY, ISO 527; Prusament 1600, Formfutura 2020[5][6][2][29]Not documented
Elongation at break%6.7 (PolyLite) to 9.2 (Bambu Lab) at break, printed XY, ISO 527; Formfutura quotes 15 at break, Prusament 3.4 at yield[5][6][29][2]Not documented
Flexural strengthMPa64 ± 1 printed horizontal (Prusament, ISO 178); Bambu Lab 65 ± 5, PolyLite 73.4[2][5][6]Not documented
Flexural modulusMPa1920 ± 130 (Bambu Lab) to 3206 (PolyLite) printed XY, ISO 178; Prusament 2000[5][6][2]Not documented
Charpy impact, notchedkJ/m²10.3 (PolyLite) to 19.6 (Bambu Lab) printed XY, ISO 179, notched; Prusament 12 ± 1, Formfutura 18[6][5][2][29]7.9 ± 0.4 printed horizontal and 9.9 ± 0.8 printed vertical XZ (ISO 179-1, notched)[3]
Other impact dataCharpy unnotched 25 ± 3 printed horizontal and 38 ± 11 printed vertical (Prusament, ISO 179-1); Bambu Lab 41.0 ± 2.3 printed XY[2][5]Not documented
Layer adhesion / Z tensileMPa11 ± 1 (Prusa interlayer adhesion test); 31 ± 4 (Bambu Lab) and 32 (PolyLite) printed Z tensile, ISO 527[2][5][6]Not documented
Brittleness1–5Tough — absorbs impact, yields before breaking[5][2]Moderate[3]
Hardness (scale-specific)Shore A / Shore D / Rockwell78 Shore D (Prusa Polymers method)[2]Rockwell R102 (and M95) on extruded unfilled PP stock (ASTM D785); no figure is published for a glass-fibre PP filament[30]
Creep resistance / sustained load1–5Moderate — no printed-ASA creep test found; Tg of 98 °C keeps room-temperature service far below softening, unlike PLA[6][2]Not documented
Fatigue / repeated-flex resistance1–5Moderate — fatigue limit at 25 % of tensile strength (8 MPa) on printed specimens, the best of the four polymers in that study[31]Not documented
Elasticity / flexibility1–5Rigid[5]Rigid[3]
Z strength as % of XY%84 (Bambu Lab, printed Z against XY tensile); 73 for PolyLite ASA[5][6]Not documented
Thermal Properties
HDT at 0.45 MPa°C93 (Prusament) to 103 (PolyLite), ISO 75 at 0.45 MPa; Bambu Lab 100[2][6][5]138.3 (ISO 75, 0.45 MPa)[3]
HDT at 1.8 MPa°C86 (Prusament) to 100 (PolyLite), ISO 75 at 1.8 MPa; Bambu Lab 92[2][6][5]112.6 (ISO 75, 1.8 MPa)[3]
Glass transition (Tg)°C98 (PolyLite, DSC)[6]Not documented
Melting point / Vicat°CAmorphous — no melting point; Vicat 105 (PolyLite, ISO 306)[6]Not documented
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[32]Not documented
Thermal expansion (CTE)µm/m·K69 ± 17 in XY and 115 ± 24 in the build direction (printed, TMA, 40–70 °C)[33]Not documented
Flammability / UL 94Flammable; no UL 94 rating published for standard ASA[5]Not documented
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use. After 1000 h of QUV exposure to ASTM G154 Stratasys measured yield strength falling only from 30.5 to 30.3 MPa and stress at break by 3.0 %[19]Not documented
Outdoor durability1000 h QUV per ASTM G154, cycling 8 h at 60 °C and 4 h at 50 °C with condensation: yield 30.5 → 30.3 MPa, stress at break 30.5 → 29.5 MPa, elongation 2.8 → 2.3 %, modulus 1.82 → 1.95 GPa[19]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[6]Excellent against acids, alkalis and most solvents[23]
Water / humidity resistance in service1–5Good — minor absorption[5]Excellent — essentially unaffected[3]
Food contactNot food safe[1]Not documented
Biodegradability / compostabilityNot biodegradable[1]Not documented
RecyclabilityNot accepted in household plastic collection[1]Not documented
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[34][21]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[34]
VOC emission rateµg/min12–113 styrene, the range measured across the styrenic filaments tested; ASA itself was not among them[34]Not documented
Ultrafine-particle emission rateparticles/min2 × 10¹⁰ to 9 × 10¹⁰ median for ABS, the closest styrenic tested; ASA itself was not measured[34]Not documented
Hazardous species emittedStyrene. Bambu Lab states ABS and ASA release harmful gases such as styrene at printing temperature, which can be toxic and cause dizziness or nausea. Azimi et al. measured styrene from every styrenic filament tested but did not test ASA itself[21][34]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[34][21]Open a window / occasional ventilation. Inferred — no polyolefin was measured in the chamber study[34]
Dust & fibre handling hazardNot documentedGlass fibre is bound in the matrix; avoid inhaling sanding dust[3]
Post-Processing
Sanding & machiningSands well and takes filler before painting[1]Not documented
Gluing & solvent weldingSolvent-welds with acetone[6]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works — ASA dissolves in acetone[6]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a dedicated Support for ABS that also serves ASA[21]Not documented
Dimensional accuracy & detailWarping and cooling-stress cracking are the accuracy limits; Stratasys notes the matte finish as a deliberate aesthetic advantage[21][19]Not documented
Solvents & Solubility
Soluble inAcetone dissolves it (Polymaker); MEK, THF, ethyl acetate and the chlorinated solvents dissolve the styrenic backbone.[35][6]None at room temperature; chloroform dissolves the matrix at 60 °C and xylene at about 118 °C, leaving the fibre.[36][37]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[38]Xylene, decalin, CCl4 and chlorobenzene are heavily absorbed at 20 °C; oleum, chlorosulphonic acid and bromine destroy it.[36]
Solvent welding & smoothing agentAcetone vapour, ~20 min at 80 °C over 5 mm of liquid (15–40 min across brands); layer adhesion up, tensile slightly down.[39]None — nothing softens PP at room temperature, so joints have to be welded thermally rather than chemically.[36]

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. ASA — material basics Polymaker Wiki · 2026-08 · doc
  2. Prusament ASA Technical Datasheet v1.1 Prusa Polymers · 2024-05 · tds
  3. Prusament PP Glass Fiber Technical Datasheet v1.0 Prusa Polymers · 2024-11 · tds
  4. Prusament PP Glass Fiber — material page Prusa Polymers · 2026-08 · doc
  5. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  6. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  7. ASA — product page Bambu Lab US Store · 2026-08 · vendor
  8. Polymaker product catalogue Polymaker · 2026-08 · vendor
  9. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  10. BASF Ultrafuse PP GF30 Black 2.85 mm 2.200 g igo3d · 2026-08 · vendor
  11. BCN3D PP GF30 Black 2.85 mm 700 g igo3d · 2026-08 · vendor
  12. Prusa Prusament PP Glass Fiber Natural (NFC), 1.75 mm / 850 g 3DJAKE · 2026-08 · vendor
  13. Filastruder product catalogue Filastruder · 2026-08 · vendor
  14. ZYLtech ASA-GF Glass Fiber filament — product page ZYLtech · 2026-08 · vendor
  15. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  16. IEMAI ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  17. SUNLU ASA 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  18. YXPOLYER ASA Purple product page YXPOLYER · 2026-08 · vendor
  19. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  20. Prusament PP Carbon Fiber Technical Datasheet v1.0 Prusa Polymers · 2024-11 · tds
  21. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  22. Polypropylene — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  23. PP — material basics Polymaker Wiki · 2026-08 · doc
  24. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  25. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  26. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  27. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  28. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  29. ApolloX Technical Data Sheet Formfutura · 2026-08 · tds
  30. TECAFINE PP natural — stock shape properties Ensinger · 2026-08 · tds
  31. Mechanical, Fatigue, and Thermal Characterization of ASA, Nylon 12, PC and PC-ABS Manufactured by Fused Filament Fabrication (FFF) Polymers 18(2):302 · 2026-01 · paper
  32. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  33. Basalt Fiber Composites with Reduced Thermal Expansion for Additive Manufacturing Polymers 14(15):3216 · 2022-08 · paper
  34. 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
  35. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  36. Pro-fax and Moplen polypropylene — Chemical Resistance Guide (20, 60 and 100 °C) LyondellBasell · 2026-08 · tds
  37. US 5,278,282 Polymer recycling by selective dissolution — xylene dissolution temperatures Nauman & Lynch, Rensselaer Polytechnic Institute · 1994-01 · paper
  38. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  39. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc