Relative permeability armour material

The relative magnetic permeability is very close to 1 for many common non-ferrous conductors.

The IEC 60287-1-1 recommends a value of 300 for steel tapes, a value of 400 for the longitudinal relative permeability of steel wires, 10 for the transverse relative permeability of touching and 1 for non-touching steel wires.

Symbol
$\mu_{ar}$
Related
Choices
MaterialValueReference
Cu1.0slightly diamagnetic (0.999994)
Al1.0slightly paramagnetic (1.000022)
Brz1.0commonly non-magnetizable
CuZn1.0commonly non-magnetizable
S4000.0wide range, typical value for electrical steel
SS1.0highly grade/work dependent