PPSU is an amorphous material, with better resistance to impact and hydrolysis, compared to the power supply. Typically, the operating temperature is approximately +170°C. Very high impact strength remains even after heat aging. properties: high strength and stiffness, very high impact strength (also at low temperature), very good dimensional stability, very high chemical resistance, high resistance to all types of radiation, resistance to repeated sterilizations, lower chemical resistance than comparable crystalline materials. It has greater chemical resistance than PSU.