Ultem®
Ultem® Polyetherimide (PEI) is an amorphous thermoplastic film that retains its strength and rigidity at high temperatures. Its exceptional electrical properties are maintained throughout temperature and frequency variations. Its chemical resistance and FDA compliance make it a suitable material for numerous applications in the medical and food production industries. Ultem® has excellent flame retardance ideal for aerospace & avionics applications. Ultem® has proven to be ideal for various niche applications including the base material for high temperature bar-code labels, membrane switches and medical device insulators.
Material specification:
| Test Method | Typical Value | ||
| Materials | Imperial units | Metric units | |
| Available Thickness Range | – | 2 – 20 mil | 50 – 250µm |
| Max. Operating Temp. | – | 340ºF | 171°C |
| Transition temperature | ASTM D-3418 | 423ºF | 217°C |
| Melt Point | ASTM D-3418 | 426ºF | 219°C |
| Dielectric Strength | ASTM D-149 | 830 V/mil | 33 V/μm |
| Dielectric Constant | ASTM D-150 | 3.15 | 3.15 |
| Specific Gravity | ASTM D-792 | 2.12 – 2.17 | 2.12 – 2.17 |
| Tensile Strength, Break | ASTM D-638 | 15200 psi | 105 MPa |
Ultem® is a registered trademark of GE.
Pronat stocks and converts Ultem® for a wide range of applications. Pronat will die cut, slit, sheet and laminate Ultem® film to customers specification.
