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Prusament ASA
ASA can be considered the true successor to ABS. Compared to ABS, it is not sensitive to UV rays, it does not suffer too much from shrinkage, and the fumes produced are much less noticeable.
Features
Benefits
- Ideal for outdoor use - UV resistant
- High temperature resistance
- Detailed printing without "thread effect"
- Can be smoothed with acetone vapors
- Can be easily sanded/post-treated
- High layer adhesion
- Soluble in acetone - can be used for gluing
- High resistance to impact and wear
- Solid
- Recyclable
Disadvantages
- Large models tend to warp.
- Produces odors during printing (less than ABS)
- Contains styrene
- Requires high printing temperatures
- Hygroscopic
Use
Parts with high thermal resistance
Thanks to its high thermal resistance of up to 93°C, ASA is an excellent choice for parts subjected to thermal stress. For example, the fan shroud of the Original Prusa i3 MK3S is now made of ASA material.
Smooth surface
ASA is suitable for projects where you need a smooth surface similar to one treated with automotive paint. However, this results in a loss of fine detail and rounds off sharp edges.
Outdoor use
Thanks to its UV stability, ASA is an ideal choice for outdoor use. The material will retain its strength and durability for a long time and will not yellow.
Mechanical parts
Due to its need for strength, robustness and durability, the bicycle bottle holder is a typical application example of ASA material.
Information
Printing difficulty
AVERAGE
Thermal resistance
93 °C
Robustness
High
Tendency to deform
High
Smell
Yes
Post-processing
EasyEasy to sand (wet or dry)
Solubility
YesAcetone
Elasticity
AVERAGE
Printing speed
Fast
Details
0.10 mm and more
Abrasiveness
None
Difficult to break
Yes
ASA can be considered the true successor to ABS. Compared to ABS, it is UV stable, doesn't really shrink, and the fumes it produces are much less noticeable. ASA 3D prints are durable, strong, and suitable for a wide range of applications. The solidification temperature is also higher compared to PLA and PETG, giving ASA-printed objects excellent temperature resistance – there is no sign of warping up to temperatures close to 93°C. Thanks to all these properties, ASA is particularly well-suited for printing objects intended for long-term outdoor use.
However, you may still encounter some issues related to material warping – especially when printing large models. Even with the heated bed set to 110°C, prints can shrink and warp, causing them to detach from the print bed. Nevertheless, the effects are much less pronounced than with ABS. This problem can be mitigated by printing in a confined space or adding a high skirt around the object.
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