Polyetherimide (PEI), also trademarked as Ultem®, is an amorphous, amber-to-transparent thermoplastic. Rated for continuous use in temperatures up to 356° F (180° C), it also features high tensile strength along with good flame and chemical resistance.
Ultem® PEI is often used instead of polysulfone and is commonly specified for aerospace, automotive, medical, and packaging applications. The unfilled grade, Ultem® 1000, offers outstanding mechanicial, thermal, and environmental properties, excelling in hot air and water environments. It’s hydrolytically stable, retaining 85% of its tensile strength after 10,000 hour boiling water immersion and 100% of tensile strength after 2,000 steam autoclave cycles at 270°F. It is also resistant to UV and gamma radiation. This material can be easily machined, and it provides cost savings over ceramics in electrical applications. It also offers cost and weight savings over stainless steel in medical applications.
Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative by filling out the form below.
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Polyetherimide
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| Type | Size | Length | Color |
|---|---|---|---|
| Sheet | 3/32”–4” | 12” x 12”, 24”; 24” x 24”, 36”, 48”, CTS | Natural (Amber) |
| Rod | 1/4”–8” dia. | 96” L; CTS | Natural (Amber) |
| Film | 0.001”–0.040” th. | Up to 27” roll width; CTS lengths | Natural (Amber) |
Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.
| Physical Properties | Units | ASTM | Results |
|---|---|---|---|
| Density | lb/in³ | D792 | 0.046 |
| Mechanical Properties | Units | ASTM | Results |
|---|---|---|---|
| Tensile Strength | psi | D638 | 16,500 |
| Tensile Modulus | psi | D638 | 475,000 |
| Tensile Elongation @ Break | % | D638 | 80 |
| Flexural Strength | psi | D790 | 20,000 |
| Flexural Modulus | psi | D790 | 500,000 |
| Compressive Strength | psi | D695 | 22000 |
| Compressive Modulus | psi | D695 | 480.000 |
| Hardness, Rockwell R | D785 | R125/M112 | |
| IZOD Impact Strength Notched | ft-lb/in | D256 | 0.5 |
| IZOD Impact Strength Un-notched | ft-lb/in | D256 |
| Thermal Properties | Units | ASTM | Results |
|---|---|---|---|
| Heat Deflection Temp at 66 psi | °F | D648 | |
| Heat Deflection Temp at at 264 ps | °F | D648 | 392 |
| Melting Temperature | °F | D3418 | 419 |
| Max Operating Temp | °F | D3418 | 340 |
| Thermal Conductivity | BTU-in/ft²-hr-°F | C177 | 0.9 |
| Flammability Rating | UL94 | V-O |
| Electrical Properties | Units | ASTM | Results |
|---|---|---|---|
| Dielectric Strength, 1/8″ th. | V/mil | D149 | 830 |
| Dielectric Constant @ 1MHz | D150 | 3.15 | |
| Dissipation Factor @ 1MHz | D150 | 0.0013 | |
| Surface Resistivity | ohms/sq | D257 | |
| Volume Resistivity, 50% RH | ohms/cm | D257 | 6.7 x 10¹⁷ |
NOTE: The property values presented above 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.
NOTE: Several grades of this material are available. For additional information regarding this plastic, contact your Emco Industrial Plastics representative or call 973-862-4148.
