PSU

Polysulfone (PSU) is an amorphous high-performance engineering thermoplastic characterized by aromatic sulfone linkages that provide thermal stability and rigidity. It is widely used in demanding applications requiring sustained performance at elevated temperatures, including aerospace components, medical devices, automotive underbody parts, and transparent or opaque industrial equipment where creep resistance and chemical durability are critical. Engineers select PSU over commodity plastics when superior heat resistance, dimensional stability, and long-term mechanical retention under load are required, though it is typically reserved for applications where the cost premium versus standard thermoplastics is justified by performance or regulatory requirements.