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 glass filled grade, Ultem 2000, offers increased strength, stiffness and dimensional stability while maintaining many of the useful characteristics of basic Ultem. The glass reinforcement yields a product with an exceptional strength-to-weight ratio and increased tensile strength. Glass-filled grades appear tan or greenish in color and are available in limited sheet and rod sizes.
Additional formulations (i.e., carbon filled) and variants within these grades (resistance to wear, chemical, high heat, stains; static dissipative, and hydrolytically stable) are available to meet specific application demands. An Emco Industrial Plastics representative can help you choose the correct material to meet your application needs.
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 | Tan/Green |
| Rod | 1/4”–8” dia. | 96” L; CTS | Green |
| Film | 0.001”–0.040” th. | Up to 27” roll width; CTS lengths |
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 | 0.055 |
| Water Absorption, 24 hrs | % | D570 | 0.18 |
| 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 |
