Class 180 polyester coated imide film insulated round copper magnet wire uses polyester imide as the insulation layer, which has excellent insulation performance and heat shock resistance.
Characteristic:
| Adhesion and flexibility | Thin film coating with no visible cracks |
| Elongation | Not less than 7-33 |
| Thermal Shock | No visible cracks in thin film coating after conditioning at 200ºC |
| Springback | 14-30 AWG:Maximum angle per turn: not more than the value in the range of 42-70Mandrel diameter (mm): not more than the value in the range of 82.6±0.127-19.0±0.127Tension (±2%): not more than the value in the range of 4.45±2%-0.56±2%4-13 AWG：No more than 5° |
| Dielectric breakdown | 4-9 AWG: not less than 3400v-3700v 10-23.5 AWG: not less than 2740v-3740v 24-37 AWG: not less than 360v-2710v 38-44 AWG: not less than 300v-500v |
| Continuity | 14-44 AWG: Maximum discontinuities comply with 350±5% – 2500±5%Maximum discontinuities comply with 3-15.45-56 AWG: Maximum discontinuities comply with 10-25. |
Regular compliance testing:
| Thermoplastic Flow | The median value is not less than 300°C |
| Solubility | Samples immersed in xylene and 50/50 xylene/butyl cellosolve should not soften enough to expose bare conductors |
| Dielectric breakdown at rated temperature | The average value is not less than 75% of the required value at room temperature |
Scratch resistance:
Helical Coil Preparation and Bond Retention
| Wire SizeRange AWG | Mandrel Diameter(inches) | Maximum Winding Force(grams) | Load on Coil During Bonding(grams) | Peel Strength at Room Temperature(grams) | Peel Strength at Elevated Temperature(grams) |
| 14-14.5 | 0.55 | 1200 | 675 | 850 | 350 |
| 15-15.5 | 0.47 | 1200 | 500 | 650 | 250 |
| 16-16.5 | 0.43 | 1200 | 450 | 600 | 225 |
| 17-17.5 | 0.39 | 1200 | 400 | 500 | 200 |
| 18-18.5 | 0.35 | 500 | 350 | 425 | 175 |
| 19-19.5 | 0.31 | 500 | 250 | 350 | 125 |
| 20-20.5 | 0.28 | 500 | 200 | 285 | 100 |
| 21–21.5 | 0.24 | 500 | 175 | 225 | 90 |
| 22-23.5 | 0.20 | 200 | 125 | 160 | 65 |
| 24-25.5 | 0.16 | 200 | 75 | 110 | 35 |
| 26-27.5 | 0.12 | 80 | 50 | 70 | 25 |
| 28-31.5 | 0.08 | 80 | 35 | 35 | 20 |
| 32-33.5 | 0.04 | 30 | 25 | 25 | 10 |
| 34-37.5 | 0.04 | 12 | 15 | 12 | 10 |
| 38-40.5 | 0.04 | 5 | 5 | 8 | 5 |
| 41-41 | 0.04 | 5 | 5 | 5 | 5 |