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ULTEM
GENERAL PROPERTIES Ultem® PolyEtherImide (PEI) is an amber transparent high performance polymer which combines high strength and rigidity at elevated temperatures with long term heat resistance. Ultem® offers excellent dimensional stability combined with broad chemical resistance.
Ultem® is also inherently flame resistant and low smoke generating. It excels in medical reusable applications requiring repeated sterilization and is available in FDA compliant colors.
ULTEM® GRADES Ultem® 1000 - unfilled
Unfilled Ultem® excels in hot air and water environments. It's hydrolitically stable -- it retains 85% of 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 UV and gamma radiation resistant.
Ultem® 2100 - 10% glass filled, Ultem®2200 - 20% glass filled,
Ultem® 2300 - 30% glass filled
Glass reinforced Ultem® provides even greater rigidity 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.
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TYPICAL PROPERTIES of ULTEM® |
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| ASTM or UL test | Property |
Ultem®1000 unfilled |
Ultem®2300 30% glass |
| PHYSICAL | |||
| D792 |
Density (lb/in³) (g/cm³) |
0.046 1.28 |
0.055 1.51 |
| D570 | Water Absorption, 24 hrs (%) | 0.25 | 0.18 |
| MECHANICAL | |||
| D638 | Tensile Strength (psi) | 16,500 | 17,000 |
| D638 | Tensile Modulus (psi) | 475,000 | 800,000 |
| D638 | Tensile Elongation at Break (%) | 80 | 3.0 |
| D790 | Flexural Strength (psi) | 20,000 | 30,000 |
| D790 | Flexural Modulus (psi) | 500,000 | 900,000 |
| D695 | Compressive Strength (psi) | 22,000 | 32,000 |
| D695 | Compressive Modulus (psi) | 480,000 | 620,000 |
| D785 | Hardness, Rockwell | M112 / R125 | M114 / R127 |
| D256 | IZOD Notched Impact (ft-lb/in) | 0.5 | 1.0 |
| THERMAL | |||
| D696 |
Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) |
3.1 | 1.1 |
| D648 |
Heat Deflection Temp (°F / °C) at 264 psi |
392 / 200 |
410 / 210 |
| D3418 | Glass Transition Temp (°F / °C) | 419 / 215 | 419 / 215 |
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Max Operating Temp (°F / °C) | 340 / 171 | 340 / 171 |
| C177 |
Thermal Conductivity (BTU-in/ft²-hr-°F) (x 10-4 cal/cm-sec-°C) |
0.90 3.10 |
0.90 3.10 |
| UL94 | Flammability Rating | V-O | V-O |
| ELECTRICAL | |||
| D149 | Dielectric Strength (V/mil) short time, 1/8" thick | 830 | 770 |
| D150 | Dielectric Constant at 1 MHz | 3.15 | 3.70 |
| D150 | Dissipation Factor at 1 MHz | 0.0013 | 0.0015 |
| D257 | Volume Resistivity (ohm-cm)at 50% RH | 6.7 x 1017 | 3.0 x 1016 |
