3D Printing Info

Filament comparison

ASA vs PC-GF

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

ASA guideGlass-fibre PC (PC-GF) guide

2 selected · all documented properties

Open these two in the interactive comparisonMore ASA comparisonsMore PC-GF comparisons
ASA vs PC-GF — documented properties and sources
PropertyASAASAGlass-fibre PC (PC-GF)PC
Market snapshot
Listing priceUSD/kg; dated snapshots$28.98/kg median; $17.99–$50.00/kg across 14 dated product listings$71.27/kg median; $71.27–$71.27/kg across 1 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]Polycarbonate reinforced with 30 wt% short glass fibre[3]
Densityg/cm³1.05 (Bambu Lab) to 1.13 (PolyLite ASA), ISO 1183; Prusament 1.07[4][5][2]1.17 (measured on a 100 % infill printed part, ISO 1183-A)[3]
Typical priceUSD/kg1 kg spools cluster near 30[6][7][8]1 kg spools cluster near 71[9]
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[10][7][6][11][8][12][13][14][15]71 — BASF Ultrafuse PC GF30 at igo3d is the only priced listing found; Owens Corning sells XSTRAND GF30-PC in 500 g and 1 kg[9][3]
Market availability1–5Stocked by most mainstream brands[6][7][12][8]Niche, a handful of specialist brands — neither Polymaker's nor 3DXTech's polycarbonate range contains a glass-fibre grade, but BASF Forward AM and Owens Corning both sell one through European retail[9][3][7][12]
Spool sizes & diameters1.75 and 2.85 mm; 0.8, 1, 4 and 10 kg spools[12][8][6]1.75 and 2.85 mm at +/- 0.05 mm; 500 g and 1 kg net spools[3]
Typical applicationsOutdoor fittings, signage, automotive exterior trim and anything that has to hold colour and strength in sunlight[16][1]Functional prototyping for mechanical engineering, electronics and automotive[3]
Diameter tolerance± mm±0.04 (Prusament)[2]+/- 0.05 (Owens Corning XSTRAND)[3]
Printing Parameters
Nozzle temperature°C230–270 across brands; Prusament 260 ± 10, Bambu Lab 240–270, PolyLite 230–260[4][5][2]280-330 (Owens Corning XSTRAND GF30-PC)[3]
Bed temperature°C75–110; Prusament 110 ± 5, Bambu Lab 80–100, PolyLite 75–95[4][5][2]80-110 (Owens Corning XSTRAND GF30-PC)[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[5][17]Enclosure required (passive) — as for unfilled PC[18][17]
Recommended chamber temperature°C45–60 (Bambu Lab)[4]Not documented
Part cooling fanLow — Prusament 30 % within a 0–50 % range, Bambu Lab 0–80 %, PolyLite off[2][4][5]Not documented
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][17]Perforated plate, DimaFix or Magigoo PC glue (Owens Corning)[3]
Maximum volumetric flow (mm³/s; see test conditions)mm³/s10–16 (PrusaSlicer guidance for ABS/ASA)[19]Not documented
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][17]Not documented
Bed-adhesion difficulty1–5Needs a specific surface plus adhesive[2][17]Not documented
Stringing / oozing tendency1–5Slight[5]Not documented
Overall printing difficulty1–5Intermediate — dry filament and a tuned profile[17][2]Not documented
Extruder requirementNot documentedOwens Corning specifies a nozzle above 0.4 mm and hardened steel nozzles and drive wheels[3]
Hardware Wear & Reliability
Nozzle hardness required1–4Brass fine indefinitely[17]Hardened steel required — Owens Corning states glass reinforcement shortens brass nozzle and drive-wheel life[3]
Abrasiveness1–5Non-abrasive[17]Highly abrasive — 30 wt% glass fibre[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[20][21]High — jams from moisture, heat creep or particles; PC already absorbs water from the air and Prusa lists glass-filled composites as a higher clogging risk[22][23]
Heat-creep / jam sensitivity1–5Slightly sensitive[20]Not documented
Hotend requirementNo special hot-end required[20]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[4][5][2]Negligible (<0.1 % EMC) — Owens Corning measures below 0.1 % at 23 °C and 50 % RH (ISO 62)[3]
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)[4][5][2]Below 0.1 at 23 °C and 50 % RH, and below 0.1 at saturation (ISO 62)[3]
Drying temperature & time80 °C for 8 h (Bambu Lab); 70 °C for 7 h (Polymaker)[4][5]Not documented
Symptoms when wetBubbling and popping at the nozzle, stringing, rough surface and weak layers[24]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[24]No dry-versus-conditioned figures are published. Polymaker calls PC highly hygroscopic; absorbed water flashes to steam and shows as bubbling and poor layer adhesion[25][24]
Storage requirementSealed with desiccant; Polymaker rates the styrenics moderate-sensitivity[24]Not documented
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[4][5][2][26]65 at break (printed, ISO 527 at 1 mm/min)[3]
Young's modulusMPa2379 (PolyLite) to 2450 (Bambu Lab) printed XY, ISO 527; Prusament 1600, Formfutura 2020[4][5][2][26]5400 (printed, ISO 527 at 1 mm/min)[3]
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[4][5][26][2]2.5 at break (printed, ISO 527 at 1 mm/min)[3]
Flexural strengthMPa64 ± 1 printed horizontal (Prusament, ISO 178); Bambu Lab 65 ± 5, PolyLite 73.4[2][4][5]113 at yield (printed, ISO 178 at 2 mm/min)[3]
Flexural modulusMPa1920 ± 130 (Bambu Lab) to 3206 (PolyLite) printed XY, ISO 178; Prusament 2000[4][5][2]5500 (printed, ISO 178 at 2 mm/min)[3]
Charpy impact, notchedkJ/m²10.3 (PolyLite) to 19.6 (Bambu Lab) printed XY, ISO 179, notched; Prusament 12 ± 1, Formfutura 18[5][4][2][26]Not documented
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][4]Not documented
Layer adhesion / Z tensileMPa11 ± 1 (Prusa interlayer adhesion test); 31 ± 4 (Bambu Lab) and 32 (PolyLite) printed Z tensile, ISO 527[2][4][5]Not documented
Brittleness1–5Tough — absorbs impact, yields before breaking[4][2]Brittle — snaps with little warning; 2.5 % elongation at break[3]
Hardness (scale-specific)Shore A / Shore D / Rockwell78 Shore D (Prusa Polymers method)[2]Rockwell 70 (118) — the source does not name the scales and Shore D 79 on extruded unfilled PC stock (ASTM D785, D2240); no figure is published for a glass-fibre grade[27]
Creep resistance / sustained load1–5Moderate — no printed-ASA creep test found; Tg of 98 °C keeps room-temperature service far below softening, unlike PLA[5][2]Excellent — holds load for years. Room-temperature tensile creep of moulded unfilled PC ran unbroken at 41 MPa until the test was stopped, and 30 wt% glass raises the tensile modulus from about 2.3 to 5.4 GPa[28][3]
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[29]Not documented
Elasticity / flexibility1–5Rigid[4]Rigid[3]
Z strength as % of XY%84 (Bambu Lab, printed Z against XY tensile); 73 for PolyLite ASA[4][5]Not documented
Thermal Properties
HDT at 0.45 MPa°C93 (Prusament) to 103 (PolyLite), ISO 75 at 0.45 MPa; Bambu Lab 100[2][5][4]Not documented
HDT at 1.8 MPa°C86 (Prusament) to 100 (PolyLite), ISO 75 at 1.8 MPa; Bambu Lab 92[2][5][4]137 (printed, ISO 75 Method A at 1.8 MPa)[3]
Glass transition (Tg)°C98 (PolyLite, DSC)[5]145 (DSC, ISO 11357)[3]
Melting point / Vicat°CAmorphous — no melting point; Vicat 105 (PolyLite, ISO 306)[5]270 stated as melting point (ISO 11357) — unusual for an amorphous polymer, but this is the published figure[3]
Continuous service temperature°C93 — Prusa publishes this as the temperature resistance of Prusament ASA[30]Not documented
Thermal expansion (CTE)µm/m·K69 ± 17 in XY and 115 ± 24 in the build direction (printed, TMA, 40–70 °C)[31]26.2 in XY and 77.4 in Z (printed, ISO 11359-2) — a threefold anisotropy, and the lowest in-plane expansion of any polycarbonate here[3]
Flammability / UL 94Flammable; no UL 94 rating published for standard ASA[4]UL 94 V-0 verified (Owens Corning)[3]
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 %[16]Good — years with some colour shift. Owens Corning lists UV resistance as a product benefit but publishes no exposure data[3]
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[16]Not documented
Chemical resistanceGood against weak acids, weak alkalis, oils and grease; dissolved by acetone[5]Not documented
Water / humidity resistance in service1–5Good — minor absorption[4]Excellent — essentially unaffected; below 0.1 % water at saturation (ISO 62)[3]
Food contactNot food safe[1]Not documented
Biodegradability / compostabilityNot biodegradable[1]Not documented
RecyclabilityNot accepted in household plastic collection[1]Not documented
Electrical & ESD propertiesNot documentedElectrically insulating (Owens Corning)[3]
Health & Safety
Fume toxicity1–5High — hazardous VOC such as styrene; enclosure and filtration needed[32][17]Moderate — measurable VOCs and UFPs, ventilation advised[32]
VOC emission rateµg/min12–113 styrene, the range measured across the styrenic filaments tested; ASA itself was not among them[32]Not documented
Ultrafine-particle emission rateparticles/min2 × 10¹⁰ to 9 × 10¹⁰ median for ABS, the closest styrenic tested; ASA itself was not measured[32]≈4 × 10¹⁰ median — the highest ultrafine-particle rate of the nine filaments in the chamber study, above every ABS tested[32]
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[17][32]Not documented
Ventilation / filtration requirement1–5Enclosure with carbon and HEPA filtration[32][17]Ventilated room or enclosure recommended[32][17]
Dust & fibre handling hazardNot documentedOwens Corning warns that the glass reinforcement is abrasive when melted and advises sufficient ventilation and avoiding extrusion fumes[3]
Post-Processing
Sanding & machiningSands well and takes filler before painting[1]Not documented
Gluing & solvent weldingSolvent-welds with acetone[5]Not documented
Vapour / chemical smoothingAcetone vapour smoothing works — ASA dissolves in acetone[5]Not documented
Support material pairingHIPS breaks away or dissolves in d-limonene; Bambu Lab sells a dedicated Support for ABS that also serves ASA[17]Not documented
Dimensional accuracy & detailWarping and cooling-stress cracking are the accuracy limits; Stratasys notes the matte finish as a deliberate aesthetic advantage[17][16]High dimensional stability is the headline benefit; the 26.2 um/m*K in-plane CTE is a third of unfilled PC's[3]
Solvents & Solubility
Soluble inAcetone dissolves it (Polymaker); MEK, THF, ethyl acetate and the chlorinated solvents dissolve the styrenic backbone.[33][5]Dichloromethane and chloroform dissolve the matrix and leave the fibre; DMF and dioxane do the same (Covestro).[34]
Softened or crazed byLimonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails.[35]Methanol, butyl acetate, ether, 1 % NaOH and phthalate plasticisers stress-crack it; acetone, MEK and xylene swell it.[34]
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.[36]Dichloromethane cement welds the resin, but the fibre keeps the joint from flowing closed. Controlled carcinogen.[37]

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. XSTRAND GF30-PC Data Sheet Owens Corning · 2019-04 · tds
  4. Bambu Filament Technical Data Sheet V3.0 — ASA Bambu Lab · 2026-08 · tds
  5. PolyLite ASA Technical Data Sheet Polymaker · 2024-11 · tds
  6. ASA — product page Bambu Lab US Store · 2026-08 · vendor
  7. Polymaker product catalogue Polymaker · 2026-08 · vendor
  8. Printed Solid product catalogue Printed Solid · 2026-08 · vendor
  9. BASF Ultrafuse PC GF30 Black 2.85 mm 1.000 g igo3d · 2026-08 · vendor
  10. Filastruder product catalogue Filastruder · 2026-08 · vendor
  11. ZYLtech ASA-GF Glass Fiber filament — product page ZYLtech · 2026-08 · vendor
  12. 3DXTech product catalogue 3DXTech · 2026-08 · vendor
  13. IEMAI ASA 3D Printing Filament product page IEMAI 3D · 2026-08 · vendor
  14. SUNLU ASA 3D Printer Filament 1 kg SUNLU · 2026-08 · vendor
  15. YXPOLYER ASA Purple product page YXPOLYER · 2026-08 · vendor
  16. ASA — FDM Material Data Sheet (includes 1000 h QUV exposure results) Stratasys · 2026-08 · tds
  17. ABS / ASA / PC Usage Guide Bambu Lab Wiki · 2026-08 · doc
  18. PolyLite PC Technical Data Sheet V5.4 Polymaker · 2024-11 · tds
  19. Max volumetric speed Prusa Knowledge Base · 2026-08 · doc
  20. ASA — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  21. Filament Material Guide Prusa Knowledge Base · 2026-08 · doc
  22. Composite materials filled with carbon, kevlar or glass Prusa Knowledge Base · 2026-08 · doc
  23. Polycarbonate — Ultimate 3D Printing Materials Guide Simplify3D · 2026-08 · doc
  24. Wet Filament — signs, causes and drying Polymaker Wiki · 2026-08 · doc
  25. PC — material basics Polymaker Wiki · 2026-08 · doc
  26. ApolloX Technical Data Sheet Formfutura · 2026-08 · tds
  27. TECANAT natural (PC) — stock shape properties Ensinger · 2026-08 · tds
  28. Experimental data for creep and dynamic mechanical properties of polycarbonate and polycarbonate/ABS Data in Brief 42:108264 · 2022-06 · paper
  29. 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
  30. Prusament ASA — material page Prusa Polymers · 2026-08 · doc
  31. Basalt Fiber Composites with Reduced Thermal Expansion for Additive Manufacturing Polymers 14(15):3216 · 2022-08 · paper
  32. 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
  33. Chemical resistance — resistance of Ensinger plastics to chemicals (DIN 50 014, 23/50) Ensinger · 2026-08 · tds
  34. Makrolon — The chemical resistance (Makrolon 2800, 6 days at 23 °C and 50 °C) Covestro · 2016-12 · tds
  35. HIPS — Knowledge Base Prusa Research · 2026-08 · doc
  36. Improve your 3D prints with chemical smoothing Prusa Research · 2026-08 · doc
  37. Weld-On 3 Acrylic Plastic Cement — technical data sheet (shipped as dichloromethane) IPS Corporation · 2002-07 · tds