Polysulfone (PSU) is a high-temperature aromatic sulfone polymer. PSU has excellent thermal and chemical resistance, making it well suited for demanding applications in automotive, aerospace, electronics, defense, food service, industrial, plumbing, medical, semi-con applications. PSU is an excellent alternative to ULTEM 9085. While having a lower cost per kilogram and lower density (giving you more filament per kilogram as well), it maintains superior thermal properties. Its higher Tg and HDT give it higher strength and stiffness at elevated temperatures.
