Belden Cable manufactures two different types of Magnet Wire: Class 200 and Single Beldsol Solderable Magnet Wire. Magnet Wire isn't magnetized but will create an electromagnetic field if it is electrified while wound in a coil.
The difference between Belden's two Magnet Wire types lies in the spool size and the coating. While both have dual coatings, each type uses different material. Class 200 Magnet Wire has a base coating of cross-linked, modified polyester, and a top coating of amide-imide polymer. Single Beldsol Solderable Magnet Wire has a base coat of polyurethane and a nylon topcoat.
Class 200 Magnet Wire is available in one-pound spools, while Beldsol is sold on half-pound spools. Single Beldsol Solderable Magnet Wire has a slightly higher temperature rating than the Class 200 Magnet Wire, at 270°C versus 200°C. Solderable Beldsol will also successfully solder at 750°C without any insulation removal.