Poly­sul­fone [Udel®]


  • Amor­phous high-performance thermoplastic
  • Hydrolysis-resistant for con­tin­u­ous use in hot water and steam
  • Resis­tant to acidic and salt solu­tions and detergent
  • Radiation-stable
  • Low ionic impu­rity levels
  • Food-grade is FDA-, NSF-, 3A-dairy– and USP Class VI-compliant
  • Avail­able in cus­tom colors

Com­mon uses

  • Ana­lyt­i­cal instrumentation
  • Sur­gi­cal and med­ical devices
  • Semi­con­duc­tor process equip­ment components
Polysulfone tubing

Poly­sul­fone tubing

Mate­r­ial Specifications

ASTM or UL test Prop­erty Value
D792 Den­sity (lb/in3)/(g/cm3) 0.045 (1.24)
D570 Water absorp­tion, 24 hrs (%) 0.3
D638 Ten­sile strength (psi) 10,200
D638 Ten­sile mod­u­lus (psi) 360,000
D638 Ten­sile elon­ga­tion at yield (%) 30
D790 Flex­ural strength (psi) 15,000
D790 Flex­ural mod­u­lus (psi) 400,000
D785 Hard­ness, Rockwell 82
D256 Izod notched impact (ft-lb/in) 1.3
D696 Coef­fi­cient of lin­ear ther­mal
expan­sion (x 10–5 in./in./°F)
D648 Heat deflec­tion temp (F°/C°) at 264 psi 340/171
D3418 Melt­ing temp (F°/C°) -
D3418 Glass tran­si­tion temp (F°/C°) 374/190
- Max oper­at­ing temp (F°/C°) 300/149
C177 Ther­mal con­duc­tiv­ity
UL94 Flam­ma­bil­ity rating H-B
D150 Dielec­tric con­stant at 1 MHz 3.14
D150 Dis­si­pa­tion fac­tor at 1 MHz 0.0008
D150 Dielec­tric strength (V/mil) 425
D257 Vol­ume resis­tiv­ity (ohm/cm) at 50% RH 5 x 1016

These are typ­i­cal val­ues for ref­er­ence and com­par­i­son only. They should not be used as a basis for design spec­i­fi­ca­tions or qual­ity con­trol. Con­tact us for the man­u­fac­tur­ers’ com­plete mate­r­ial prop­erty datasheets. All val­ues were taken at 73°F (23°C) unless oth­er­wise noted.

Don’t see what you’re look­ing for? Call us at 800–423-2769 or email us at tom@crownplasticsinc.com.