Radel® R-5500 – is a general purpose extrusion grade of polyphenylsulfone (PPSU) offering exceptional hydrolytic stability and better toughness than most commercially available high temperature polymers.
PSU(Polysulfone) – is a high temperature, amber colored, semi-transparent plastic material with good mechanical properties. PSU is resistant to degradation from hot water and steam and it is often used in medical and food preparation applications where repeated sterilization is required..
Tech Tip – PPSU is often used instead of polysulfone or Ultem® for medical applications when superior toughness or extended service life with repeated autoclave cycles is desired.
| UNITS | ASTM TEST | RADEL®R | PSU (polysulfone) | |
| Tensile strength | psi | D638 | 10,100 | 10,200 |
| Flexural modulus | psi | D790 | 350,000 | 390,000 |
| Izod impact (notched) | ft-lbs/in of notch | D256 | 13.0 | 1.3 |
| Heat deflection temperature @ 264 psi | °F | D648 | 405 | 345 |
| Maximum continuous service temperature in air | °F | 392 | 285 | |
| Water absorption (immersion 24 hours) | % | D570 | 0.37 | 0.30 |
| Coefficient of linear thermal expansion | in/in/ °Fx10-5 | D696 | 3.1 | 3.1 |
| Coefficient of friction (dynamic) |
