Material Information

Polysulfone is an amorphous high performance thermoplastic that offers excellent mechanical and electrical properties, as well as chemical resistance to acidic and salt solutions. It also has good resistance to detergents. These properties remain constant over a relatively broad temperature range (-150º F to 300º F). Polysulfone is a rigid material that can operate in an autoclave environment. Its excellent hydrolysis resistance allows it to be continuously used in hot water and steam. It also has excellent radiation stability and low ionic impurity levels. All together, Polysulfone’s properties make it ideal for use in pharmaceutical and medical applications, food service equipment, semiconductor processing, and electronic equipment. It has low flammability and smoke emission and is FDA, NSF, 3A-Dairy, and USP Class VI compliant in a food grade. It is available in a transparent amber color in the form of rod and sheet.


  • Pharmaceutical
  • Medical
  • Food service equipment
  • Semi-conductor water processing
  • Electronic equipment
  • Ultra pure water systems
  • Chip testing equipment


  • Autoclave resistant
  • Excellent hydrolytic stability
  • High strength and rigidity
  • Excellent electrical properties
  • Good chemical resistance
  • Superior creep resistance
  • FDA, NSF, 3A-Dairy, and USP Class VI compliant
  • High temperature performance
  • Flame retardant


Astm Test Method

Polysulfone (PSU)

Density (lb/in^3) D792 0.045
Specific Gravity D792 1.24
Water Absorption @ 24 hours (%) D570 0.3


Tensile Strength (PSI) D638 10,200
Tensile Modulus (PSI) D638 360,000
Tensile Elongation at Yield (%) D638 30
Flexural Strength (PSI) D790 15,000
Flexural Modulus (PSI) D790 400,000
Izod Impact (Notched), ft-lb/in D256 1.3
D785 M82 / R128


Coefficient of Thermal
Expansion, 10^-5/°F
D696 3.1
Heat Deflection Temperature 264 psi, ºF D648 340
Melting Point, °F D3418 374
Continous Service Temp (Operating), °F  – 300
Flammability Rating UL94 HB


Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
D149 425
Volume Resistivity (ohm-cm) @ 50% RH D257 5.0 X 10^16
Dielectric Constant at 1 kHz D150 3.14
Dissipation Factor at 1 kHz D150 0.0008


The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.