Is magnet a good conductor of heat?

Answer 1

Depends on what it's made of and how much heat. There's something called the "Curie point", which is different for every material, and above the Curie temperature permanent magnets lose the alignment of magnetic moments that makes them permanent magnets. They may spontaneously realign if cooled, but the magnet will likely be weaker than it was originally.

Curie temperatures for common magnets are generally fairly high (at least several hundred degrees).

Answer 2

Conductor of electricity is sort of the definition of a magnet. Magnets conduct electrical fields; it is what makes them magnets, in very simple terms.

Answer 3

Usually magnets are based on metals. Metals usually are good hear conductors. As result magnets have thermal conductivity comparable with metals (exceptions are possible).