Electrician Talk banner
1 - 14 of 14 Posts

· Electron Factory.Worker
379 Posts
Iron core refers to what the windings are wrapped around in an electromagnetic device such as a motor, generator, transformer, reactor, inductor, etc. The iron core greatly increases the strength of the magnetic field and helps contain the field. When the core is something that's non magnetic such as plastic then its referred to as an air core.

· Donuts > Fried Eggs
17,035 Posts
And as far as iron conductors goes, iron has a high resistivity. It would take about six times the surface area of iron to equal the same current-carrying capacity as copper, so it ends up not being viable, especially given that it's just as heavy.

Add in the fact that it very readily oxidizes so all connections would have to be plated, it just doesn't make economic sense. UL489 actually specifically prohibits iron for current-carrying parts in breakers.

· Premium Member
7,402 Posts
Chemical Elements

Metal conductors in order of conductance:

Copper - Electron valence +1
Iron - Electron valence +2

Both elements have ; 2 electrons on the inner K shell, 8 on the L shell, 18 for cu on the M shell, and 14 for iron. Both elements have an incomplete unstable low number of electrons in the outermost valence shell, which makes good unstable electrons.

According to these rules you would think iron would be a very good conductor.

Actually according to their Atomic number, Copper is 29, and Iron is 26
1 - 14 of 14 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.