When it comes to 3D printing, the most well-known filament types are often PLA and PETG . Both are easy to work with and produce great results, making them great choices for beginners. But there is a third filament type that many people are not familiar with – ASA .
ASA stands for Acrylonitrile Styrene Acrylate , and it is a material that can be a better alternative to ABS in many cases. While ABS can be difficult to print with and tends to warp, ASA has some advantages that make it attractive – especially for functional parts that will be used outdoors.
Why choose ASA?
✅ UV-resistant
ASA is much more sunlight resistant than PLA and PETG. This means your prints won't yellow or become brittle if exposed to UV radiation over time. Perfect for everything from garden furniture to car accessories.
✅ High impact strength
The material is strong and flexible, making it suitable for functional parts that must withstand stress.
✅ Weather resistant
In addition to UV resistance, ASA can also withstand rain, wind and temperature fluctuations, making it an obvious choice for outdoor use.
✅ Aesthetic finish
The surface of ASA has a nice, matte look that often looks more professional than the glossy surface of PLA.
Challenges at ASA
Although ASA has many advantages, it is not quite as easy to work with as PLA:
💠 Printing temperature : ASA requires higher temperatures (typically 240–260 °C) and a heated build plate (90–110 °C).
💠 Warping : The risk of the part stretching out during printing is greater than with PLA and PETG. Printing in a closed cabinet helps a lot.
💠 Ventilation : During printing, fumes can be generated, so it is best to use ASA in a well-ventilated area.
When should you choose ASA?
☀ If you are making outdoor projects like signs, plant holders, bicycle or car parts.
💪 If you need durable, functional prototypes that can withstand stress.
✨ If you want a professional finish with a matte surface.
*to Sunlu ASA
Conclusion
PLA is still the easiest filament to work with, and PETG is a good compromise between strength and printability. But if you want to take your 3D prints to the next level – especially for projects that need to withstand the sun and wind – ASA is an obvious choice .
With us you will find a selection of ASA filament in several colors, so you can start exploring the possibilities.