3D Printing InfoWhere it is used
Outdoor brackets and mounts that need stiffness and dimensional stability under sun and moisture
ASA · Material guide
Glass-fibre ASA (ASA-GF)
ASA with 10–15 wt% glass fibre for stiffness and dimensional stability outdoors; ZYLtech requires a hardened nozzle of 0.6 mm or larger and Spectrum recommends ruby or hardened.
Open in interactive comparisonUnderstand the material
At a glance
Before you print
- Setup difficulty
- Intermediate — dry filament and a tuned profile; ZYLtech requires a hardened nozzle of 0.6 mm or larger
- Nozzle wear
- Highly abrasive — standard GF composite
Read the full material overview
ASA with 10–15 wt% glass fibre for stiffness and dimensional stability outdoors; ZYLtech requires a hardened nozzle of 0.6 mm or larger and Spectrum recommends ruby or hardened.
Applications
ASA-GF is an outdoor rigidity material for manufacturing tools, housings, covers and exposed mechanical parts. Spectrum lists these uses for ASA-X GF10, connecting glass reinforcement with stiffness and the ASA matrix with resistance to prolonged sunlight and moisture. It fits parts that need to retain a locating or mounting shape rather than act as elastic hinges.
The grade and specimen type matter. Spectrum’s published mechanical and thermal figures include injection-molded specimens, so they are not direct load ratings for a printed bracket. ZYLtech reports limited elongation for its grade, favoring generous roots and distributed loads over narrow flexures. Reinforcement content and required nozzle size differ between manufacturers, even when both products are called ASA-GF.
Manufacturing tools and equipment ↗
FDM · Spectrum ASA-X GF10; 10% glass fibre · Manufacturer-listed applications
Spectrum lists manufacturing tools and equipment for ASA-X GF10. Stiffness and outdoor stability are the intended advantages; its molded-specimen data do not directly establish the strength of an FDM tool.
Housings and covers exposed outdoors ↗
FDM · Spectrum ASA-X GF10 · Manufacturer-listed applications
Spectrum lists housings, covers and components requiring high outdoor-exposure resistance. This is a manufacturer-listed use for the exact grade rather than a documented installed enclosure.
Sources
Find printable models
Check the model’s material and process notes before choosing a filament.
Plan your printer setup
All print settings ↓Printing quick reference
Representative catalog values. Check the exact grade and its linked conditions before using a setting.
Nozzle temperature (°C)
240–270 (Spectrum); 240–280 (ZYLtech)
Full value & sources
240–270 (Spectrum); 240–280 (ZYLtech)
Bed temperature (°C)
80–100 (Spectrum); 90–110 on PEI (ZYLtech)
Full value & sources
80–100 (Spectrum); 90–110 on PEI (ZYLtech)
Enclosure
Enclosure recommended
Drying
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Full value & sources
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—Go deeper when you need to
60 documented fieldsProperties & source data
Open a topic to explore the complete data. Each value keeps its original conditions, units and dated sources.
Material & market8 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Base polymer / chemistry | ASA reinforced with chopped glass fibre — 10 wt% (Spectrum ASA-X GF10), 15 wt% (ZYLtech ASA-GF) | 2 sources |
| Density (g/cm³) | 1.07 (ZYLtech) and 1.11 (Spectrum), ISO 1183 | 2 sources |
| Typical price (USD/kg) | 1 kg spools cluster near 28 | 2 sources
|
| Price range across brands (USD/kg) | 27–34 across brands; Ambrosia 27, ZYLtech 30, Siraya Tech 34 | 3 sources
|
| Market availability (1–5) | Niche, a handful of specialist brands | 3 sources
|
| Spool sizes & diameters | 1.75 and 2.85 mm; 1 kg spools | 2 sources
|
| Typical applications | Outdoor brackets and mounts that need stiffness and dimensional stability under sun and moisture | 2 sources |
| Diameter tolerance (± mm) | ±0.01 at 95 % probability and ±0.02 at 100 % (ZYLtech) | 1 source
|
Print settings11 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Nozzle temperature (°C) | 240–270 (Spectrum); 240–280 (ZYLtech) | 2 sources |
| Bed temperature (°C) | 80–100 (Spectrum); 90–110 on PEI (ZYLtech) | 2 sources |
| Enclosure / chamber requirement (1–5) | Enclosure recommended | 1 source
|
| Part cooling fan | 0–20 % (Spectrum) | 1 source |
| Bed surface & adhesion aid | PEI sheet, BuildTak or an adhesion aid such as Magigoo (Polymaker); Simplify3D also lists Kapton tape and ASA slurry | 2 sources
|
| Maximum volumetric flow (mm³/s; see test conditions) (mm³/s) | 2.4–5.6 at Spectrum's 30–70 mm/s on a 0.4 mm nozzle at 0.2 mm layer; ZYLtech allows up to 200 mm/s | 3 sources
|
| Warping tendency (1–5) | Moderate — needs adhesion aid or draught shield | 1 source
|
| Bed-adhesion difficulty (1–5) | Needs a specific surface plus adhesive | 1 source
|
| Stringing / oozing tendency (1–5) | Slight — Polymaker advises 1–2 mm retraction at 20–30 mm/s | 1 source
|
| Overall printing difficulty (1–5) | Intermediate — dry filament and a tuned profile; ZYLtech requires a hardened nozzle of 0.6 mm or larger | 2 sources |
| Extruder requirement | ZYLtech specifies a hardened nozzle 0.6 mm or larger; Spectrum bases its settings on a 0.5 mm nozzle | 2 sources |
Nozzle wear & reliability5 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Nozzle hardness required (1–4) | Hardened steel required — Spectrum recommends ruby or hardened, ZYLtech requires hardened | 2 sources |
| Abrasiveness (1–5) | Highly abrasive — standard GF composite | 2 sources |
| Nozzle clog risk (1–5) | Moderate — needs dry filament and a clean nozzle; Prusa lists higher risk of nozzle clogging for glass-filled composites | 1 source
|
| Heat-creep / jam sensitivity (1–5) | Slightly sensitive | 1 source
|
| Hotend requirement | No special hotend required | 1 source
|
Moisture & drying4 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Moisture absorption (hygroscopicity) (1–5) | Moderate — the ASA matrix takes up 0.40–0.45 % saturated at 25 °C / 55 % RH; no glass-filled grade publishes its own figure | 3 sources
|
| Symptoms when wet | Bubbling and popping at the nozzle, stringing and a rough surface | 1 source
|
| Effect of moisture on strength | No dry-versus-conditioned figures are published; Polymaker groups the styrenics as moderate-sensitivity and absorbed water shows as bubbling and poor layer adhesion | 1 source
|
| Storage requirement | Sealed with desiccant; Polymaker rates the styrenics moderate-sensitivity | 1 source
|
Strength & mechanical properties10 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Tensile strength (XY) (MPa) | 33–36 at break, ISO 527 (ZYLtech; specimen type not stated); Spectrum quotes 55 at break on injection-moulded specimens | 2 sources |
| Young's modulus (MPa) | 2540–2890 (ZYLtech; specimen type not stated) and 2550 (Spectrum, injection-moulded), ISO 527 | 2 sources |
| Elongation at break (%) | 3.4 at break (ZYLtech; specimen type not stated); Spectrum quotes 2.80 at yield on injection-moulded specimens | 2 sources |
| Flexural modulus (MPa) | 2130–2480 flexural modulus, ISO 178 (ZYLtech; specimen type not stated) | 1 source
|
| Charpy impact, notched (kJ/m²) | 8.3 notched Charpy at 23 °C on injection-moulded specimens (Spectrum, ISO 179-1eA); ZYLtech publishes notched Izod 6.9 by ISO 180 instead | 2 sources |
| Other impact data | Charpy unnotched 25 kJ/m² at 23 °C on injection-moulded specimens (Spectrum, ISO 179-1eU); ZYLtech notched Izod 6.9 kJ/m² (ISO 180) | 2 sources |
| Brittleness (1–5) | Brittle — snaps with little warning; elongation at break 3.4 % | 1 source
|
| Creep resistance / sustained load (1–5) | Good — no creep test found; chopped glass fibre lifts modulus to 2540–2890 against 2379–2450 for unfilled ASA | 3 sources
|
| Fatigue / repeated-flex resistance (1–5) | Below average — no GF-grade S-N curve; elongation at break falls to 3.4 % against 6.7–9.2 % for unfilled ASA | 3 sources
|
| Elasticity / flexibility (1–5) | Rigid | 1 source
|
Heat & temperature5 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| HDT at 0.45 MPa (°C) | 100 (Spectrum, injection-moulded, ISO 75 at 0.45 MPa) | 1 source |
| HDT at 1.8 MPa (°C) | 97–99 unannealed (ZYLtech, ISO 75 at 1.8 MPa; specimen type not stated); Spectrum 90 on injection-moulded specimens | 2 sources |
| Melting point / Vicat (°C) | Amorphous ASA matrix; Vicat 98 (Spectrum, ISO 306). ZYLtech quotes a 210–220 °C melting range by ISO 11357 for its grade | 2 sources |
| Continuous service temperature (°C) | 93 — Prusa publishes this as the temperature resistance of Prusament ASA | 1 source
|
| Flammability / UL 94 | Flammable; no UL 94 rating published | 1 source
|
Weather & chemical resistance5 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| UV resistance (1–5) | Excellent — designed for permanent outdoor use; Spectrum states the parts resist prolonged UV and moisture exposure | 2 sources |
| Chemical resistance | Good against weak acids, weak alkalis, oils and grease; dissolved by acetone | 1 source
|
| Food contact | Not food safe | 1 source
|
| Biodegradability / compostability | Not biodegradable | 1 source
|
| Recyclability | Not accepted in household plastic collection | 1 source
|
Health & safety4 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Fume toxicity (1–5) | High — hazardous VOC such as styrene; enclosure and filtration needed | |
| Hazardous species emitted | Styrene. 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 | |
| Ventilation / filtration requirement (1–5) | Enclosure with carbon and HEPA filtration | |
| Dust & fibre handling hazard | Glass fibre is bound in the matrix; avoid inhaling sanding dust | 1 source |
Finishing & post-processing5 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Sanding & machining | Sands well and takes filler before painting | 1 source
|
| Painting & finishing | Paints readily; ASA holds colour outdoors so many parts are left unpainted | 1 source
|
| Gluing & solvent welding | Solvent-welds with acetone | 1 source
|
| Vapour / chemical smoothing | Acetone vapour smoothing works | 1 source
|
| Support material pairing | HIPS breaks away or dissolves in d-limonene; Bambu Lab sells a Support for ABS that also serves ASA | 1 source
|
Solvents & solubility3 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Soluble in | Acetone dissolves the resin and leaves the fibre; MEK, THF, ethyl acetate and chlorinated solvents attack the styrenic backbone. | 2 sources
|
| Softened or crazed by | Limonene attacks some grades — Prusa reports Prusament ASA Orange flaking apart as layer adhesion fails. | 1 source
|
| Solvent welding & smoothing agent | Acetone vapour reaches only the resin fraction, so the fibre is left standing proud of the smoothed surface. | 2 sources
|
How to read these values
Values describe representative grades, not every spool. Manufacturer datasheets and independent tests retain their source labels and dates. Printed orientation, test method, conditioning and formulation can change results. Unknown values are —. A listed use is not a certification. Shore A, Shore D and Rockwell hardness are separate scales.
Find a specific filament
3 listingsProduct listings and datasheets
Historical USD/kg snapshots. Read each listing’s sale/from qualifiers, spool mass, source date, shipping and tax notes. Product figures are separate from the material summary.
Browse 3 products from 3 brands
AmbrosiaASA-GF26.99 USD/kg
$26.99 / 1 kg spool; $44.99 for the 2 kg variant = $22.50/kg, filastruder.com, Aug 2026
Handle ambrosia-asa-gf-glass-filled-filament. Ambrosia's specification table for ASA-GF lists density and all mechanical values as TBD; only HDT is given, as 88 °C or above (also marked TBD).
Open product listing ↗- Filastruder product catalogue · 2026-08 · vendor
- Ambrosia ASA-GF Filament — technical specifications and print settings · 2026-08 · tds
| Spool sizes & diameters | 1 kg and 2 kg spools, 130 g spool weight; 1.75 mm | |
|---|---|---|
| Diameter tolerance (± mm) | 0.03 | |
| Nozzle temperature (°C) | 250–280 (Ambrosia recommends 270) | |
| Bed temperature (°C) | 100–120 (Ambrosia recommends 110) | |
| Recommended chamber temperature (°C) | 40–120 (Ambrosia recommends 45) | |
| Part cooling fan | 0–70 %, depending on cooling capability |
ZYLtechASA-GF (Glass Fiber)29.95 USD/kg
$29.95 / 1 kg spool at 1.75 mm, zyltech.com, Aug 2026 (quantity breaks to $28.45)
15 wt% glass fibre, made in Houston. ZYLtech requires a hardened nozzle and suggests 0.6 mm.
Open product listing ↗- ZYLtech ASA-GF Filament Technical Data Sheet v1 · 2026-08 · tds
- ZYLtech ASA-GF Glass Fiber filament — product page · 2026-08 · vendor
| Density (g/cm³) | 1.07 (ISO 1183) |
|
|---|---|---|
| Diameter tolerance (± mm) | ±0.02 |
|
| Nozzle temperature (°C) | 240–280 |
|
| Bed temperature (°C) | 90–110 on PEI |
|
| Maximum volumetric flow (mm³/s; see test conditions) (mm³/s) | up to 20 (manufacturer maximum flow rate) |
|
| Tensile strength (XY) (MPa) | 33–36 at break (ISO 527) |
|
| Young's modulus (MPa) | 2540–2890 (ISO 527) |
|
| Elongation at break (%) | 3.4 at break (ISO 527) |
|
| Flexural modulus (MPa) | 2130–2480 (ISO 178) |
|
| Other impact data | Izod notched 6.9 kJ/m² at 23 °C (ISO 180) |
|
| HDT at 1.8 MPa (°C) | 97–99 unannealed (ISO 75, 1.8 MPa) |
|
| Melting point / Vicat (°C) | 210–220 melting (ISO 11357) |
|
Siraya TechFibreheart ASA-GF33.99 USD/kg
$33.99 / 1 kg spool, siraya.tech US store, Aug 2026 (list $39.99)
10 % chopped glass fibre. Hardened steel nozzle of 0.4 mm or larger specified.
Open product listing ↗- Siraya Tech Fibreheart ASA-GF Filament product page · 2026-08 · vendor
- Siraya Tech Fibreheart ASA-GF Technical Data Sheet · 2026-08 · tds
| Density (g/cm³) | 1.1 (ISO 1183) |
|
|---|---|---|
| Nozzle temperature (°C) | 250-270 |
|
| Bed temperature (°C) | 100-110 |
|
| Recommended chamber temperature (°C) | 60-80 (vendor recommended enclosure temperature) |
|
| Tensile strength (XY) (MPa) | 47.5 (printed XY, ISO 527) |
|
| Young's modulus (MPa) | 2993 (ASTM D638) |
|
| Elongation at break (%) | 3.1 (printed XY, ASTM D638) |
|
| Flexural strength (MPa) | 81 (flexural, standard not stated) |
|
| Flexural modulus (MPa) | 2810 (flexural, standard not stated) |
|
| Charpy impact, notched (kJ/m²) | 8 (Charpy, standard not stated) |
|
| Hardness (scale-specific) (Shore A / Shore D / Rockwell) | 81 Shore D (ISO 7619) |
|
| HDT at 0.45 MPa (°C) | 98 (method B, 0.45 MPa) |
|
| HDT at 1.8 MPa (°C) | 94 (method A, 1.8 MPa) |
|
| Glass transition (Tg) (°C) | 106 |
|
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