ASA
Weatherproof & UV-Resistant outdoor 3D printing ASA filament for functional parts. Whether you’re printing automotive parts exposed to sunlight, or functional components needing consistent performance over years, ASA is the filament designed for the toughest environments
🎯 UV & weather resistance for outdoor use
🎯 Batch-to-batch stable performance
🎯 Proven on enclosed & high-speed printers
When it comes to creating functional, durable 3D prints that can withstand the various environmental conditions, we can say ASA, also called Acrylonitrile Styrene Acrylate, is the obvious choice. It becomes more and more popular in outdoor and functional applications thanks to its outstanding performance.
In this comprehensive guide, we’ll explore everything you need to know about ASA material. Whether you’re a beginner or an experienced user, this guide will help you choose ASA filaments for your 3D printing projects and achieve the best results.
What is ASA Filament?
ASA (Acrylonitrile Styrene Acrylate) filament is a highly durable thermoplastic polymer for 3D printing that has become more and more popular due to its impressive performance, especially the excellent weather resistance and UV stability. So if you are looking for outdoor applications with durable and long-lasting requirements, ASA filament will be the best 3D filament for outdoor use.
Key Properties That Make ASA Ideal for Outdoor Use:
- UV Resistance & Weather Resistance: ASA 3d material can withstand sunlight oxidation, aging, and water with integrity and vibrancy for a long time.
💡 Maintains color and strength after long-term sun exposure - Heat Resistance: ASA 3d material can withstand temperatures up to 90°C or higher that still keep shape and strength, suitable for heat circumstances.
💡 Suitable for parts exposed to heat and outdoor environments - High durability and strength: With solid impact strength, ASA material can sustain 38MPa tensile stress, which makes it perfect for durable parts.
💡 Reliable for functional and load-bearing parts - Smooth Surface Finish: Printing with ASA filament will get a clean and tidy final result. It can be sanded or painted to achieve a smooth finish.
💡 Can be post-processed for professional appearance
When ASA Is the Right Choice?
ASA is well known for its strength, heat resistance and UV stability features that meet some specific applications. Below is the reason why you should choose ASA filament rather than other printing filaments.
1.Superior Outdoor Durability: ASA’s weathering resistance & UV resistance make it a perfect choice for outdoor parts exposed to sunlight and rain. Unlike PETG and ABS, they will degrade and change color when exposed to UV rays and harsh environments, while ASA with a saturated acrylate elastomer (typically n-butyl acrylate rubber), stronger conjugated system and more stable molecular bonds, can maintain its color, gloss, and mechanical properties outdoors over time.
2.Excellent Strength Performance: ASA offers excellent tensile strength and impact resistance, it’s durable and stable, which makes it suitable for functional parts.
3.Highly Cost-Effective: For outdoor parts that need to be exposed to sunlight, heat, or weather in the long term, ASA material can satisfy those needs with stable mechanical performance, heat resistance, and dimensional stability. It reduces reprints, maintenance, or failures, offering long-term use. So this FDM material is a cost-effective engineering-grade option.
🧵 If your part will be used outdoors for months or years
Go for ASA filament
🧵 If color stability and aging resistance matter
Go for ASA filament
🧵 If ABS or PETG failed due to UV exposure
Go for ASA filament
🧵 If your part must remain functional, not decorative
Go for ASA filament
ASA is built to last, not just to print.
Typical Applications of ASA Filament
ASA filament with heat/UV/weather resistance, strength, and durability, performs well in a wide range of applications, particularly outstanding in harsh environments. Here are some ASA applications:
- Automotive Exterior Accessories: Seat hook, grilles, mirror housings, covers, Bumper, etc.
💡 Why choose ASA: Heat and UV stability perfect for exterior environments - Outdoor Equipment: Garden tool components, enclosures, outdoor sports & leisure equipment, camping accessories, etc.
💡 Why choose ASA: UV & weather resistance prevents aging, fading and cracking
- Industrial Components: Brackets, Jigs, gears, marine application components and housings.
💡 Why choose ASA: Stable dimension and high strength - Prototyping: Due to its excellent properties and ease of use, ASA is a popular material for prototyping functional parts that require outdoor durability or high heat resistance.
💡 Why choose ASA: Good aesthetics, chemical Resistance and post-processing
🧵 Ready to try for some top ASA outdoor applications
ASA Printing Requirements and Tips
To get the best results when 3D printing with ASA filament, it’s important to understand the ideal printing conditions. ASA can be more challenging to print compared to other materials, but with the appropriate settings and a few tips, you can achieve better results.
| Component | ASA Printing Requirements |
| Nozzle Temperature | 260-270°C |
| Cooling Fan | Off or very low |
| Printing Speed | <80mm/s |
| Ambient Temperature | 50-60°C |
| Bed Adhesion Method | 1. PET sheet (smooth/textured) 2. Addressed with Pvp solid glue stick 3. 80-100°C bed temperature |
Checklist
- Ensure good bed adhesion (PEI sheets or smooth/textured sheets, PVP solid glue stick)
- Dry filament before printing to prevent surface defects
- Avoid strong airflow through the printer
- Enclosure, not mandatory, but highly recommended for large or flat parts
3D printers suggestion for ASA filament
ASA prints best on machines designed for highertemperature materials. Many mid to high-end enclosed FDM printers handle ASA reliably. Such as Bambu Lab X1 Carbon/P1S/P2S, Sovol SV08, Creality K1/ K1 Max, Prusa MK3/MK4 / XL, UltiMaker S7/S5, Raise3D Pro3/E2, Kobra S1, etc.
✅ Budget-friendly: Bambu Lab P1S or Creality K1 Max, which balance performance and cost.
✅ Professional applications: UltiMaker or Raise3D, offering more stable and precise performance
Printing ASA issues & Solutions
1. Layer Cracking
Cause: Inappropriate temperature
Solution: Increase 5–10°C nozzle temperature; Reduce around 10mm/s print speed; Increase 10°C bed temperature; Enclosure with stable chamber temperature; And reduce cooling fan usage
2. Warping
Cause: Uneven cooling or insufficient bed adhesion
Solution: Improve bed adhesion and temperature; Use an enclosure; And model with a 5-10mm brim
3. Clogging
Cause: Low temperature, uncleanly/ worn/ low-quality nozzle, improper retraction settings, and rapid cooling
Solution: Increase 10°C nozzle temperature, manually push the filament out from the printhead; Use quality nozzle; Set proper retraction settings; lower print speed; And low fan speed or off.
4. Rough Surface or Bubbles
Cause: Thick layer, moist filament, and large nozzle gap
Solution: Reduce layer thickness to 0.15mm with printing speed 35-45mm/s; Pre-dry the filament; And reduce nozzle gap to 0.15mm
🎯 Some Tips for Printing ASA filaments
- Keep ASA filament dry
- Enclosed chamber with constant temperature
- Low fan speed or off for better results
- Recommend slightly higher temperature + slightly lower print speed
- Ventilation for safety
ASA vs ABS vs PETG
| Property | ASA | ABS | PETG |
| Density(g/cm³) | 1.07 | 1.04 | 1.27 |
| Tensile strength (MPa) | 44-55 | 40-50 | 50-60 |
| UV Resistance | Outstanding | Poor | Poor |
| Oxidation /Aging Resistance | High | Low | Medium |
| Heat Resistance | 95-105 | 85-100 | 75-85 |
| Impact Resistance | High | Medium | High |
| Waterproof | Excellent | General | G00d |
| Print Difficulty | Moderate(enclosure) | Moderate-Difficult | Easy |
✅ If printing for long-term outdoor use, choose ASA
✅ If printing easily, choose PETG
✅ If printing for marine parts, choose ASA
Ready to start your project? Get your ASA now
Why Professionals and Enthusiasts Choose iSANMATE ASA?
At iSANMATE, we engineer our ASA filament not just to meet specifications, but to excel with stable, repeatable printing and long-term performance. Every batch is developed and controlled to deliver consistent performance in real-world applications.
🎯 Engineered for long-term outdoor use
Our ASA filament is formulated to maintain mechanical strength, color stability, and surface integrity under prolonged exposure to UV radiation, heat, and weather. It is designed for parts that stay outdoors for months or years, not just short-term testing.
🎯 Consistent performance, batch after batch
We apply strict raw material selection (resin suppliers are evaluated for UV stability and melt consistency before mass production) and diameter control (using digital calipers ) to ensure stable extrusion and repeatable printing results. This consistency is critical for customers running multiple printers, reprinting parts, or producing functional components over time.
🎯 Optimized for enclosed & high-speed printing
iSANMATE ASA is tuned for enclosed FDM printers and modern high-speed platforms, delivering reliable layer bonding and dimensional stability. It maintains consistent performance across a wide range of professional and prosumer printers. For more stable printing, users can follow the above ASA printing requirements and tips suggestions to find the appropriate settings.
🎯 Proven in real applications
Our ASA filament is used by users in outdoor enclosures (whether proof & UV proof), automotive exterior parts (UV resistance), and industrial fixtures (heat-resistance & high strength), where long-term reliability matters more than appearance alone, and iSANMATE ASA significantly reduces failure and replacement costs. Performance is validated through practical use, not just internal testing.
🎯 Quality control beyond basic standards
Each production batch undergoes internal testing to verify extrusion stability under heat, dimensional accuracy, layer bonding under enclosed printing conditions and mechanical performance. This ensures dependable results whether you are prototyping or producing functional end-use parts.
The iSANMATE ASA is suitable for users who require long-lasting performance, durability, high strength, and high stability. Choosing iSANMATE ASA means choosing a filament backed by engineering discipline, application experience, and long-term reliability, helping your printed parts perform where failure is not an option.
ASA Filament FAQ
1.Is ASA suitable for beginners?
ASA requires more printing conditions than PLA or PETG, but with enclosed printers, users can achieve better results.
2.Can ASA be used indoors?
Yes, but keep good ventilation conditions for indoor printing
3.Does ASA filament hard to print?
Compare to PETG, yes. Follow our ASA printing requirements and tips you can print smoothly
4.Can I print ASA on a printer without an enclosure?
It can work for small and thick-wall prints, but wouldn’t work well for large and flat ones.
5.How should I store ASA filament?
Store it airtight with desiccant, in a cool, stable-temperature environment. Using dry box or change desiccant for better results.
6.Does ASA produce fumes?
Yes, ASA emits styrene fumes when printing. A well-ventilated area is necessary.
Ready to Print Durable and Lasting Parts with ASA?
If you are looking for a filament with durable and lasting performance outdoors, ASA definitely offers you satisfaction
👉 Explore more iSANMATE ASA filament
👉 Download ASA TDS
👉 Request sample for test
👉 Contact us for more details
