Question

Why steel is preferred for making permanent magnet?

Answer 1

Steel is preferred for making permanent magnets whereas soft iron is preferred for making electromagnets. Since, steel has a high factor of coercivity, it is preferred for making permanent magnets. Soft iron is used for making electromagnets because of its high permeability and also, hysteresis loop is narrow.

Answer 2

The steel is preferred for making permanent magnet, because -

• Steel is a good ferromagnetic material which holds the magnetic capabilities for a prolonged period of time.

• Steel is rigid and rust proof in nature which is also preferable for making long lasting permanent magnets.

• The coercivity of the steel is also higher than other ferromagnetic materials which is ideal for producing excellent quality permanent magnets.