SUNLU ASA is an engineering filament for 3D printing that stands out for its resistance to UV radiation, rain, and higher temperatures – ideal for outdoor use and functional parts. It offers high strength, dimensional stability, excellent layer adhesion, and a precise diameter of ±0.02 mm for reliable, smooth extrusion.
Durability for outdoor 3D printing
ASA is a great choice for parts exposed to sunlight and weather. It features high resistance to UV radiation, rain, and temperature fluctuations, so prints will not fade or deform over time.
Precise diameter and smooth unwinding
Thanks to a diameter tolerance of ±0.02 mm, the filament provides stable extrusion and consistent print quality. The spool supports smooth unwinding of the material for reliable operation during long prints.
Even winding for stable printing
The filament is evenly and neatly wound, which helps reduce the risk of tangling and contributes to smooth feeding into the printer. The result is a more stable process and cleaner prints.
SUNLU ASA (acrylonitrile styrene acrylate) filament is designed for projects where standard materials are not enough. Thanks to the combination of mechanical strength and weather resistance, prints retain their color, shape, and functional properties over the long term – even when exposed to sunlight, moisture, or temperature changes.
The material is optimized for stable printing and professional results. Precise diameter tolerances support consistent material flow and a clean surface without unnecessary extrusion fluctuations.
Main advantages of ASA filament:
- Outdoor durability – high resistance to UV radiation, rain, and heat
- Resistance to thermal deformation – up to 96 °C
- Tensile strength 50 MPa and impact resistance 18 kJ/m²
- Wide printing range – speed 50–200 mm/s and recommended temperatures for flexible use
Specifications
- Manufacturer
- Sunlu
- Material
- ASA (acrylonitrile styrene acrylate)
- Color
- Green
- Filament diameter
- 1.75 mm (±0.02 mm)
- Density
- 1.05 g/cm³
- Printing temperature
- 250–260 °C (50–100 mm/s) / 260–280 °C (100–200 mm/s)
- Bed temperature
- 80–100 °C
- Printing speed
- 50–200 mm/s
- Curing temperature
- 80 °C
- Storage humidity
- < 20% RH (in a sealed container with desiccant)
- Vicat softening temperature
- 105 °C
- Heat deflection temperature
- 96 °C
- Melting temperature
- 120 °C
- Melt flow index (MFI)
- 15.5 g/10 min
- Tensile strength
- 50 MPa
- Flexural strength
- 73 MPa
- Flexural modulus
- 2144 MPa
- Elongation at break
- 20%
- Impact resistance
- 18 kJ/m²
- Weather resistance
- high resistance to UV radiation, rain, and heat
