ASA, also know as Acrylic Styrene Acrylonitrile, is a 3D printable plastic with properties similar to ABS. It was originally developed as an alternative to ABS that would be more UV resistant by changing the type of rubber that’s used in the formulation. ASA is known for high impact resistance, higher temperature resistance, and increased printing difficulty. It’s commonly used in outdoor applications instead of ABS due to its superior resistance to UV and harsh weather conditions. Due to its heritage, ASA still retains many of the same printability drawbacks that are seen with ABS.