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GEHR Plastics PEI Polyetherimide
| Category | Polymer , Thermoplastic , Polyetherimide (PEI) |
| Manufacturer | GEHR Plastics Inc |
| Trade Name | |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | GEHR Plastics PEI Polyetherimide.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Polyetherimide has a high mechanical strength in connection with a good chemical and heat resistance, good dimensional stability and creep resistance. Its unique torque strength permits the economical substitution of machining fabricated small parts from steel.Propertiesvery high strength and rigidityhigh torque strength and hardnesshigh thermostabilityhigh weather resistancehigh radiation resistanceself-extinguishinglimited resistance to stress cracksApplications include parts for electrical engineering, food industry, and aircraft construction.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Specific Gravity | 1.27 g/cc | 1.27 g/cc | ISO 1183 |
| Water Absorption | 0.25 % | 0.25 % | ISO 62 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Rockwell M | 109 | 109 | |
| Hardness, Shore D | 82 | 82 | DIN 53505 |
| Tensile Strength at Break | 85.0 MPa | 12300 psi | ISO 527 |
| Tensile Strength, Yield | 105 MPa | 15200 psi | ISO 527 |
| Elongation at Break | 60 % | 60 % | ISO 527 |
| Elongation at Yield | 6.0 % | 6.0 % | ISO 527 |
| Modulus of Elasticity | 3.20 GPa | 464 ksi | ISO 527 |
| Flexural Strength | 145 MPa | 21000 psi | 3.5%; ISO 178 |
| Charpy Impact Unnotched | NB | NB | ISO 179 |
| Charpy Impact, Notched | 0.600 J/cm² | 2.86 ft-lb/in² | ISO 179 |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 56.0 µm/m-°C @Temperature 20.0 °C |
31.1 µin/in-°F @Temperature 68.0 °F |
DIN 53752 |
| Thermal Conductivity | 0.240 W/m-K | 1.67 BTU-in/hr-ft²-°F | DIN 52612 |
| Maximum Service Temperature, Air | 170 °C | 338 °F | |
| Deflection Temperature at 0.46 MPa (66 psi) | 200 °C | 392 °F | ISO 75 |
| Deflection Temperature at 1.8 MPa (264 psi) | 190 °C | 374 °F | ISO 75 |
| Vicat Softening Point | 211 °C | 412 °F | VST/B/50; ISO 306 |
| 215 °C | 419 °F | VST/A/50; ISO 306 | |
| Flammability, UL94 | V-0 | V-0 |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Volume Resistivity | >= 1.00e+13 ohm-cm | >= 1.00e+13 ohm-cm | VDE 0303 |
| Surface Resistivity per Square | >= 1.00e+15 ohm | >= 1.00e+15 ohm | VDE 0303 |
| Dielectric Constant | 2.9 @Frequency 1.00e+6 Hz |
2.9 @Frequency 1.00e+6 Hz |
DIN 53483 |
| Dielectric Strength | 33.0 kV/mm | 838 kV/in | VDE 0303 |
| Dielectric Loss Index | 0.0013 @Frequency 1.00e+6 Hz |
0.0013 @Frequency 1.00e+6 Hz |
DIN 53483 |
| Comparative Tracking Index | 150 V | 150 V | CTI; IEC 60112 |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Acid Resistance | yes | |
| Aromatic Resistance | yes | |
| Bondability | yes | |
| CKW Resistance | limited | |
| Color | Natural | |
| Hydrocarbonate Resistance | yes | |
| Hydroxide Resistance | yes | |
| Ketone Resistance | yes | |
| Physiological indifference according | yes | |
| Resistance Against Hot Water | yes | |
| UV Stabilization | yes |
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