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Easy as ASA

ASA Filament – Explained and Compared

Picture of Farai Mashambanhaka
by Farai Mashambanhaka
Aug 29, 2018

Looking to try your hand at a new, application-specific 3D printing material? In this guide, we take a look at the benefits, uses, and brands of ASA filament.

What is ASA Filament?

An ASA multi-purpose jig for automotive purposes.
An ASA multi-purpose jig for automotive purposes. Source: Stratasys

ASA, or acrylonitrile styrene acrylate, is a thermoplastic that combines mechanical strength, UV resistance and water resistance. It also has high dimensional stability and good chemical resistance, making it ideal for prototyping, outdoor applications and the automotive industry.

Pros

  • Strong UV resistance
  • High wear and impact resistance
  • High glass transition temperature

Cons

  • Exceptional ventilation due to potentially dangerous fumes
  • High cost
  • High extruder temperature

Uses

  • Automotive exterior parts
  • Outdoor components, including housing components
  • Sporting goods
  • Exterior signage

In the following we look at some best practices for ASA filament, as well as four different brands.

Best Practices with ASA Filament

A pair of sunglasses printed in ASA.
A pair of sunglasses printed in ASA. Source: Simplify3D.com

The following tips help reduce common problems when printing with ASA:

  • Make sure you have a good build surface.
  • Adjust temperature and cooling settings to prevent overheating.
  • Set the cooling fan to a slow speed.

ASA Filament #1: Fillamentum ASA Extrafill

Fillamentum's "Natural" ASA Extrafill.
Fillamentum's "Natural" ASA Extrafill. Source: Fillamentum

Fillamentum, a well-established 3D printer filament manufacturer, offers ASA Extrafill. At $27 per kilogram, it’s the cheapest offering in this list, and comes in 8 different colors, including “Metallic Grass” and “Green Grass”.

Apart from the company’s website and Amazon, ASA Extrafill is also available at the popular maker supplier MatterHackers.

Features

  • Price per kg: $27
  • Available diameters: 1.75 mm, 2.85 mm
  • Available spool sizes: 750 g (+250 g spool), 2.5 kg by email request
  • Available colors: 8
  • Working temeperature: 250-255 °C
  • Bed temperature: 80-100 °C
Product image of Fillamentum ASA Extrafill

Fillamentum ASA Extrafill

ASA Filament #2: Rigid.Ink ASA

A turbine made from red Rigid.Ink ASA.
A turbine made from red Rigid.Ink ASA. Source: Rigid.Ink

Another big name in the material market, Rigid.Ink offers their own ASA filament. A key selling point of their highly reliable product is the extremely low diameter tolerance of +/- .03 mm. (Fillamentum only offers +/- .05 mm.)

Product features

  • Price per kg: $55
  • Available diameters: 1.75 mm, 2.85 mm
  • Available spool sizes: 1 kg, 3 kg, 10 m
  • Available colors: 6
  • Working temeperature: 240-250 °C
  • Bed temperature: 90-110 °C
Product image of Rigid.Ink ASA

Rigid.Ink ASA

ASA Filament #3: 3DXTech 3DXMax ASA

3DXTech offer more colors of ASA than any other provider.
3DXTech offer more colors of ASA than any other provider. Source: 3DXTech.com

Though less prominent, 3DXTech has a lot to offer with their version of ASA filament, 3DXMax. Available in all the standard diameters and spool sizes, this filament also comes in the largest variety of colors. All print with a low-gloss matte finish, which is ideal for non-flashy technical components.

You can purchase 3DXMax ASA from their website.

Product features

  • Price per kg: $38
  • Available diameters: 1.75 mm, 2.85 mm
  • Available spool sizes: 1 kg, 4 kg, 5 x 4 kg
  • Available colors: 11
  • Working temeperature: 270-290 °C
  • Bed temperature: 110-120 °C

Conclusion

Image of: Conclusion
Source: Javelin-Tech.com

If you’re looking for a filament to produce for outdoor purposes or for functional prototypes, ASA is a great choice. Though it can be expensive to buy and difficult to print with, its quality makes it a fantastic filament for rough and tough use cases.

License: The text of "ASA Filament – Explained and Compared" by All3DP is licensed under a Creative Commons Attribution 4.0 International License.

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