ULTEM® 1000 PEI (UNFILLED POLYETHERIMIDE)
Material Information
Ultem® PEI is a high performance polymer that is transparent amber in color. Ultem® PEI in general is high in strength and rigidity at elevated temperatures with long-term heat resistance. It is inherently flame resistant and low in smoke production. It also offers excellent dimensional stability, excellent electrical insulating properties, and a broad chemical resistance. It is easily machined and finished. This makes it ideal for use in medical reusable application where repeated sterilization is required.
The unfilled grade of Ultem® PEI is called Ultem® 1000. Ultem® 1000 excels in hot air and water environments because it is very hydrolytically stable. It is also UV and gamma radiation resistant. Ultem® 1000 is available in the form of film, sheet, and rod.
Application
- Reusable medical equipment
- Electrical/electronic applications
- Semiconductor burn in sockets
- Aircraft/aerospace interiors
- Food service
- High temperature lighting bezels
- Under-hood automotive applications
- Medical instrument trays
- Institutional kitchenware
Properties
- Hydrolytically stable
- UV and gamma radiation resistant
- Excellent mechanical strength
- Easily machined and finished
- Outstanding heat resistance
- Exceptional resistance to environmental forces
- Inherent flame resistance with low smoke
- High dielectric strength
- Low dissipation factor over wide range of frequencies
Physical |
Astm Test Method |
Duratron® U1000 PEI (Ultem® 1000) |
| Density (lb/in^3) | D792 | 0.046 |
| Specific Gravity | D792 | 1.28 |
| Water Absorption @ 24 hours (%) | D570 | 0.25 |
| Water Saturation (%) | D570 | 1.25 |
Mechanical |
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| Tensile Strength (PSI) | D638 | 16,500 |
| Tensile Modulus (PSI) | D638 | 500,000 |
| Tensile Elongation at Break (%) | D638 | 80 |
| Flexural Strength (PSI) | D790 | 20,000 |
| Flexural Modulus (PSI) | D790 | 500,000 |
| Compressive Strength (PSI) | D695 | 22,000 |
| Compressive Modulus (PSI) | D695 | 480,000 |
| Izod Impact (Notched), ft-lb/in | D256 | 0.5 |
| Rockwell Hardness | D785 | M112, R125 |
Thermal |
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| Coefficient of Thermal Expansion, 10^-5/°F |
D696 | 3.1 |
| Heat Deflection Temperature 264 psi, ºF | D648 | 400 |
| Glass Transition Temp, ºF | D3418 | 410 |
| Continous Service Temp (Operating), °F | – | 340 |
| Thermal Conductivity, BTU-in/hr-ft² °F | C177 | 0.85 |
| Flammability Rating | UL94 | VO |
Electrical |
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| Dielectric Strength, Short Term, (Volts/Mil) @ .125″ Thick |
D149 | 830 |
| Surface Resistivity (ohms/square) | EOS/ESD S11.11 | > 10^13 |
| Dielectric Constant at 1 KHz | D150 | 3.15 |
| Dissipation Factor at 1 KHz | D150 | 0.0013 |
NOTE:
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.