3D Printing Info

Filament comparison

ASA Aero vs PP-GF

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

Foaming ASA (ASA Aero) guideGlass-fibre PP (PP-GF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA Aero comparisonsMore PP-GF comparisons
ASA Aero vs PP-GF — documented properties and sources
PropertyFoaming ASA (ASA Aero)ASAGlass-fibre PP (PP-GF)POLYOLEFIN
Market snapshot
Listing priceUSD/kg; dated snapshots$49.99/kg median; $49.99–$49.99/kg across 1 dated product listings$49.09/kg median; $46.27–$86.01/kg across 3 dated product listings
Identity & Market
Base polymer / chemistryASA with a heat-activated blowing agent that expands at the nozzle[1][2]Polypropylene reinforced with chopped glass fibre[3][4]
Densityg/cm³0.99 filament (Bambu Lab, ISO 1183); Formfutura's grade reaches 0.33 g/cm³ fully expanded[1][2]1.12 (Prusament PP Glass Fiber, ISO 1183) — the glass lifts it above water[3]
Typical priceUSD/kg1 kg spools cluster near 50[5]1 kg-equivalent spools cluster near 49[6][7][8]
Price range across brandsUSD/kg50 at Bambu Lab's 1 kg listing[5]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[6][7][8]
Market availability1–5Niche, a handful of specialist brands[5][2]Available from several mainstream brands[6][7][8]
Spool sizes & diameters1.75 mm; 1 kg spools[5]1.75 and 2.85 mm; 700 g, 850 g and 2.2 kg spools[6][7][8]
Typical applicationsDrone airframes, RC parts and floating or outdoor applications where mass matters and UV exposure rules out LW-PLA[2]Stiff, chemically resistant parts where PP-CF's cost or conductivity is unwanted[4]
Diameter tolerance± mmNot documented±0.04 (Prusament)[3]
Printing Parameters
Nozzle temperature°C240–280 (Bambu Lab); 220–285 (Formfutura), with foaming activating near 230 °C and peaking between 270 and 285 °C[1][2]245 ± 10 (Prusament) — 25 °C below the carbon-fibre grade[3][9]
Bed temperature°C80–90 (Bambu Lab); 50–90 (Formfutura)[1][2]95 ± 10 (Prusament)[3]
Enclosure / chamber requirement1–5Enclosure recommended — Bambu Lab specifies a 45–60 °C chamber[1][10]Enclosure recommended — Simplify3D lists an enclosure as a hardware requirement and Polymaker advises one below 70 °C ambient to stop warping and cracking[11][12]
Recommended chamber temperature°C45–60 (Bambu Lab)[1]Not documented
Part cooling fan0–80 % (Bambu Lab); 0–50 % (Formfutura)[1][2]Off — Prusa runs 0 % except 100 % on bridges[3]
Bed surface & adhesion aidPEI sheet, BuildTak or an adhesion aid such as Magigoo (Polymaker); Simplify3D also lists Kapton tape and ASA slurry[13][14]Not documented
Maximum volumetric flow (mm³/s; see test conditions)mm³/s12 at Bambu Lab's 150 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[1][15]4 at Prusa's 50 mm/s cap on a 0.4 mm nozzle at 0.2 mm layer[3][15]
Warping tendency1–5Not documentedHigh — enclosure needed for reliable large parts; Prusa recommends a brim[3]
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[13]Very difficult — special plates or slurry required[3]
Stringing / oozing tendency1–5Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s[13]Not documented
Overall printing difficulty1–5Advanced — enclosure, hardware upgrades, tuning; flow has to be cut to match the expansion and the density follows nozzle temperature[2][1]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[10]Hardened steel required[3]
Abrasiveness1–5Non-abrasive[10]Highly abrasive — standard GF composite[3]
Nozzle clog risk1–5Not documentedModerate — 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[14]Not documented
Hotend requirementNo special hotend required[14]Not documented
Moisture Behaviour
Moisture absorption (hygroscopicity)1–5High — 0.80 % saturated at 25 °C / 55 % RH, nearly double unfilled Bambu Lab ASA[1][17]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][9]
Equilibrium moisture content at ~50 % RH%0.80 saturated at 25 °C / 55 % RH (Bambu Lab)[1]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)[1]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing and a rough surface[18]Not documented
Effect of moisture on strengthNo dry-versus-conditioned figures are published; Polymaker groups the styrenics as moderate-sensitivity and absorbed water shows as bubbling and poor layer adhesion[18]Not applicable in practice at 0.11 % equilibrium uptake[3]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[18]No special storage needed[3]
Mechanical Properties
Tensile strength (XY)MPa32 ± 4 printed XY, ISO 527 (Bambu Lab)[1]46.6 ± 1.3 filament tensile yield (Prusament, ISO 527) — more than double the carbon-fibre grade's 21[3][9]
Young's modulusMPa2010 ± 260 printed XY, ISO 527 (Bambu Lab)[1]Not documented
Elongation at break%5.1 ± 1.6 printed XY, ISO 527 (Bambu Lab)[1]Not documented
Flexural strengthMPa58 ± 6 printed XY, ISO 178 (Bambu Lab)[1]Not documented
Flexural modulusMPa1510 ± 120 printed XY, ISO 178 (Bambu Lab)[1]Not documented
Charpy impact, notchedkJ/m²8.2 ± 1.6 printed XY, ISO 179, notched (Bambu Lab)[1]7.9 ± 0.4 printed horizontal and 9.9 ± 0.8 printed vertical XZ (ISO 179-1, notched)[3]
Other impact dataCharpy unnotched 32.0 ± 2.5 printed XY (Bambu Lab, ISO 179)[1]Not documented
Layer adhesion / Z tensileMPa21 ± 4 printed Z, ISO 527 (Bambu Lab); flexural Z falls to 24 against 58 in XY[1]Not documented
Brittleness1–5Moderate[1]Moderate[3]
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 glass-fibre PP filament[19]
Creep resistance / sustained load1–5Below average — no creep test found; the foamed structure drops modulus to 2010 MPa and load is carried by a lower solid fraction[1][17]Not documented
Fatigue / repeated-flex resistance1–5Moderate — no foamed-grade S-N curve; unfilled printed ASA holds a fatigue limit at 25 % of tensile strength[1][20]Not documented
Elasticity / flexibility1–5Rigid[1]Rigid[3]
Z strength as % of XY%66 by tensile, 41 by flexural (printed, Bambu Lab)[1]Not documented
Thermal Properties
HDT at 0.45 MPa°C85 (ISO 75, 0.45 MPa, Bambu Lab) against 100 for unfilled Bambu Lab ASA[1][17]138.3 (ISO 75, 0.45 MPa)[3]
HDT at 1.8 MPa°C78 (ISO 75, 1.8 MPa, Bambu Lab) against 92 for unfilled Bambu Lab ASA[1][17]112.6 (ISO 75, 1.8 MPa)[3]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[21]Not documented
Flammability / UL 94Flammable; no UL 94 rating published[17]Not documented
Environment & Chemical
UV resistance1–5Excellent — designed for permanent outdoor use; Formfutura states the foaming grade retains ApolloX's UV resistance[2][22]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[23]Excellent against acids, alkalis and most solvents[12]
Water / humidity resistance in service1–5Not documentedExcellent — essentially unaffected[3]
Food contactNot food safe[13]Not documented
Biodegradability / compostabilityNot biodegradable[13]Not documented
RecyclabilityNot accepted in household plastic collection[13]Not documented
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[24][10]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[24]
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[10][24]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[24][10]Open a window / occasional ventilation. Inferred — no polyolefin was measured in the chamber study[24]
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[13]Not documented
Painting & finishingPaints readily; ASA holds colour outdoors so many parts are left unpainted[13]Not documented
Gluing & solvent weldingSolvent-welds with acetone[23]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works[23]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA[10]Not documented
Dimensional accuracy & detailMatte, textured surface that hides layer lines; colour lightens as the foaming degree rises, which doubles as a visual density cue[2]Not documented
Solvents & Solubility
Soluble inAcetone dissolves it (Polymaker); MEK, THF, ethyl acetate and the chlorinated solvents dissolve the styrenic backbone.[25][23]None at room temperature; chloroform dissolves the matrix at 60 °C and xylene at about 118 °C, leaving the fibre.[26][27]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[28]Xylene, decalin, CCl4 and chlorobenzene are heavily absorbed at 20 °C; oleum, chlorosulphonic acid and bromine destroy it.[26]
Solvent welding & smoothing agentAcetone vapour, ~20 min at 80 °C over 5 mm of liquid; the foamed wall absorbs solvent, so cut the exposure well short.[29]None — nothing softens PP at room temperature, so joints have to be welded thermally rather than chemically.[26]

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. Bambu Filament Technical Data Sheet V1.0 — ASA Aero Bambu Lab · 2026-08 · tds
  2. ApolloX Foaming Technical Data Sheet Formfutura · 2025-07 · 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. ASA Aero — product page Bambu Lab US Store · 2026-08 · vendor
  6. BASF Ultrafuse PP GF30 Black 2.85 mm 2.200 g igo3d · 2026-08 · vendor
  7. BCN3D PP GF30 Black 2.85 mm 700 g igo3d · 2026-08 · vendor
  8. Prusa Prusament PP Glass Fiber Natural (NFC), 1.75 mm / 850 g 3DJAKE · 2026-08 · vendor
  9. Prusament PP Carbon Fiber Technical Datasheet v1.0 Prusa Polymers · 2024-11 · tds
  10. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  11. Polypropylene — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  12. PP — material basics Polymaker Wiki · 2026-08 · doc
  13. ASA — material basics Polymaker Wiki · 2026-08 · doc
  14. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  15. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  16. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  17. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  18. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  19. TECAFINE PP natural — stock shape properties Ensinger · 2026-08 · tds
  20. 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
  21. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  22. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  23. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  24. 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
  25. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  26. Pro-fax and Moplen polypropylene — Chemical Resistance Guide (20, 60 and 100 °C) LyondellBasell · 2026-08 · tds
  27. US 5,278,282 Polymer recycling by selective dissolution — xylene dissolution temperatures Nauman & Lynch, Rensselaer Polytechnic Institute · 1994-01 · paper
  28. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  29. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc