PSU – Polysulfone

Polysulfone is a high temperature amorphous material with relatively low cost. It is transparent and can be used at temperatures of up to 300 F. Polysulfone has been compounded, with glass and mineral filled grades available.

Applications: Appliance parts, electronic parts, automotive parts, medical components, business Equipment, aerospace and insulators.

Tensile Strength Flexural Modulus Impact Strength Max Temp. Chemical Resistance
9,500-18,000 psi 390,000-1,500,000 psi .65-7 ft-lb/in notched izod 300°-350° F Fair to Good


  • Good thermal stability
  • Transparent
  • Tough and rigid
  • Chemical Resistance


  • Attacked by many solvents
  • Poor weatherability
  • Subject to stress cracks
  • High processing temperature

Brand Names: Udel, Ultrason, Mindel.