Acrylonitrile styrene acrylate (ASA) is a material similar to ABS but with better weather resistance. (ASA)Acrylonitrile styrene acrylate material has great toughness and rigidity, good chemical resistance and thermal stability, outstanding resistance to weather, aging and yellowing, and high gloss. Because of attribute acrylonitrile styrene acrylate has been used heavily in the automotive industry, as well as several other outdoor applications.