Magnetic Field Shielding Materials

This can be done with a number of materials including sheet metal metal mesh ionized gas or plasma.

Magnetic field shielding materials.

Magnetic shielding materials used in electronic enclosures dissipate the electromagnetic energy converting it to heat. Common sheet metals for shielding include copper brass nickel silver steel and tin. The best material available for shielding dc elf vlf magnetic fields used for years in industry to shield delicate electronic components from emfs this 80 nickel alloy magnetic shielding foil is now available at affordable prices for home and office use. There are many types of shielding materials their alloy composition is a highly guarded secret based on years of extensive research and application.

Typical materials used for electromagnetic shielding include sheet metal metal screen and metal foam. Magnetic shielding is a process that limits the coupling of a magnetic field between two locations. The purpose is most often to prevent magnetic fields from interfering with electrical devices. The thinner 0 004 thick material is easy to trim with scissors and shape by hand.

Formed into alloys and subjected to annealing processes however permeability can reach levels useful for magnetic shielding. The magnetic field lines are strongly attracted into the shielding material. The foremost of these is mumetal an industry reference material defined in milspec 14411c. Co netic aa netic s3 6 and mumetal are three unique shielding materials provided by magnetic shield corp.

They are also very expensive. Absorption loss is the primary means to shield low frequency magnetic fields. Companies that provide magnetic shielding materials typically offer a version of mumetal and some other proprietary alloys. Choose a material that is thick and has electrically conductive properties and high permeability.

Yes there are some specialized materials specifically made for magnetic shielding. Magnetic permeability of non specialized base materials is typically low around 100 for 99 pure nickel for example. Magnetic shielding materials have very high permeability and pull the magnetic field lines forcing them to pass through them thus reducing the magnetic field values in the rest of the space.