Although magnetic shielding is often referred to as a “zero Gauss chamber”, absolute shielding of magnetic fields to “zero Gauss” is only theoretically possible. In practice, a residual field, however small, will always remain.

Magnetic shields for devices and components are built according to the customer’s requirements. Depending on the application, either nickel iron, so-called “Mu metal”, silicon iron, so-called “transformer metal sheet/electrical metal sheet” or pure iron, usually combined with aluminium, are used. The parts are designed in the 3D-CAD programme and manufactured individually as one-offs or in series. If the highest shielding properties are required, a so-called “final annealing” is necessary. “Final annealing”, or thermally treated material, subsequently has significantly better magnetic shielding properties.