Magnetic Permeability of Different Materials

Magnetic permeability indicates the capacity of a material to absorb magnetic flux.

The permeability constant (µ) of a material is defined by the relationship:

B = µ_r µ₀ H; µ₀, the permeability of the free-space = 1.257 x 10^-6 H/m

Where B is the magnetic flux density applied on the material sample, and H is the magnetic field intensity. The property is useful for the design of plate magnets and magnetic sweepers. The following table provides relative permeability constants of some of the common materials.