Details
Material hierarchy: Polymer - Engineering Thermoplastic
These materials are amorphous, aromatic polyesters. They fall between polycarbonate and polysulfone in terms of temperature resistance, with a deflection temperature under load (DTUL) of 300 to 350°F at 264 psi. Other features are toughness, dimensional stability, UV resistance, flame retardancy, and good electrical properties.
Polyarylate polymers are transparent but tend toward yellowness. One producer has an almost water-white material.
Markets for polyarylate are in automotive parts such as headlamp and mirror housings, brackets, and door handles, and in electrical/electronics components such as connectors, fuses, and covers. The material's temperature resistance allows it to withstand the soldering temperatures encountered in making circuit boards.