ASA plastic sample

ASA is often called “ABS for outdoor use”

Why choose it?

  • You want a material with mostly the same properties as with ABS but with better UV resistance. On medical products, ASA is a common choice since the products need to be clear white and remain that way.

Why not choose it?

  • Poor chemical resistance
  • Prone to environmental stress cracking (a reason not to use ASA on medical products)

Typical applications:

  • Surfaces of medical products that should keep their white color. (If the product is often wiped with strong detergents, PBT is a safer choice)
  • Component of a garden watering system (questionable if a good choice)

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All information on is based on the best knowledge and understanding of experienced plastic product designers. Nevertheless, we may be wrong. Do not use this website as your primary or only source of information. Always check and test in practice. Kindly contribute, if you know better. We do not take any responsibility, financial or ethical, for the outcome of your product.