Poly 180B is a Thermal Class 180 polyurethane wire enamel that meets the requirements of NEMA MW1000, 82-C or 83-C (when applied with a Nylon overcoat, Poly 180B/Nylon). The Nylon top coat is applied to reduce the coefficient of friction during winding and/or insertion.
This coating combination can be applied as a basecoat when self-bonding magnet wire is required for a customer’s specific coil winding/forming operation.
Poly 180B/Nylon can be soldered without the use of flux (on copper substrates), and solderability times are greatly reduced with this coating combination versus products that have been coated with Tri-2-sod.
Electrical properties
| NEMA MW1000 |
ASTM D1676 |
IEC 851 | JIS C3003 | MW 82-C (Heavy), 24 AWG |
MW 83-C (Heavy), 24 AWG |
|
| Dielectric strength @ 25°C |
3.8.1.1 | 69-75 | 13-4.2,3,4 | 11.1 | 10.5 kV | 9.4 kV |
| Dissipation factor @ 220°C - 1kHz |
107-114 | 0.04 | 0.15 | |||
| Tangent delta (DIN) | 168°C | 66/ 167°C |
Mechanical properties
| NEMA MW1000 |
ASTM D1676 |
IEC 851 | JIS C3003 | MW 82-C (Heavy), 24 AWG |
MW 83-C (Heavy), 24 AWG |
|
| Adherence and flexibility | ||||||
| No snap | 3.3.1.1 | 141-148 | 8.5.1.1 | 8.1 | Pass | Pass |
| 20% snap | 3.3.1.1 | 141-148 | 9.1 | Pass | Pass | |
| Cut-through temperature | 3.50.1.1 | 61-68 | 263°C | 248°C | ||
| Solderability 455°C (no flux) | 3.13.1.1 | 178-185 | 5 sec. | 4.5 sec. |