Acrylonitrile-Styrene-Acrylate (ASA) polymers are amorphous and have mechanical properties similar to those of ABS plastics. However, the ASA properties are far less affected by outdoor weathering. The outstanding weather resistance abilities of ASA is due to the acrylic ester elastomer. ASA parts have good chemical and heat resistance, and high impact strength, even at low temperatures. Typical ASA applications are buiding/construction, automotive and recreation parts.