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Material Comparison
Product Info
Product Name
Brand Name
Usages
Properties
Certificates
Copolyester GS4 Eastman Chemical Company
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Plastic Datasheets
| thermal performance | Test Condition | Test Method | Eastman Chemical Company/ GS4 |
|---|---|---|---|
| Glass transition temperature | DSC | 80.0 °C | |
| Hot deformation temperature | 1.8MPa,Unannealed | ASTM D648 | 63.0 °C |
| 0.45MPa,Unannealed | ASTM D648 | 68.0 °C | |
| Linear coefficient of thermal expansion | MD：23°C | ASTM D696 | 7.6E-05 cm/cm/°C |
| specific heat | 60°C | DSC | 1300 J/kg/°C |
| 150°C | DSC | 1800 J/kg/°C | |
| 250°C | DSC | 2100 J/kg/°C | |
| 200°C | DSC | 2000 J/kg/°C | |
| 100°C | DSC | 1700 J/kg/°C | |
| Vicat softening temperature | ASTM D1525 | 79.0 °C |
| Electrical performance | Test Condition | Test Method | Eastman Chemical Company/ GS4 |
|---|---|---|---|
| Arc resistance | ASTM D495 | 134 sec | |
| Dielectric constant | 23°C,1kHz | ASTM D150 | 3.20 |
| 23°C,1MHz | ASTM D150 | 2.95 | |
| Dielectric strength | 23°C | ASTM D149 | 16 kV/mm |
| Dissipation factor | 23°C,1kHz | ASTM D150 | 0.017 |
| 23°C,1MHz | ASTM D150 | 0.022 | |
| Surface resistivity | ASTM D257 | 2E+16 ohms | |
| Volume resistivity | 23°C | ASTM D257 | 4.6E+16 ohms·cm |
| Physical properties | Test Condition | Test Method | Eastman Chemical Company/ GS4 |
|---|---|---|---|
| density | ASTM D1505 | 1.28 g/cm³ | |
| Water absorption rate | 23°C,24hr | ASTM D570 | 0.15 % |
| flammability | Test Condition | Test Method | Eastman Chemical Company/ GS4 |
|---|---|---|---|
| Extreme Oxygen Index | ASTM D2863 | 25 % |