Mu Metal Vs Ferrite Sheet

For pefect shielding of magnetic field of neodymium magnet use 10 layers of our 0 35mm thickness mumetal.

Mu metal vs ferrite sheet. One such composition is approximately 77 nickel 16 iron 5 copper and 2 chromium or molybdenum. Mumetal chemical composition in weight nickel ni 80 82 molybdenum mo 3 5 6. You should keep that in mind making your selection. Magnetic capabilities and mechanical properties of mu metal.

A ratio used to measure the effectiveness of a given shield. The ratio is expressed as the field strength at a given point vs. For example let s say you place a sheet of metal right next to a neodymium magnet. Mu metal is a nickel iron soft ferromagnetic alloy with very high permeability which is used for shielding sensitive electronic equipment against static or low frequency magnetic fields it has several compositions.

The treatment of a metal alloy or other material by heating to a predetermined temperature holding for a certain time and then cooling to room temperature. Mumetal magnetic shielding alloy mu metal grade astm a753 alloy 4 uns n14080 80nife is our most widely known brand. At 0 002 t cobalt iron high permeability strip material 2 3 10 2. 2 5 10 2.

In this particular case steel is usually the better choice. The first is permeability. 6 3 10 2. 4000 failed verification at 0 002 t ferritic stainless steel annealed 1 26 10 3 2 26 10 3.

The difference in properties and performance of ferrites as compared with most other magnetic materials is due to the fact that the ferrites are oxide materials rather than metals. Our mu metal items on ebay. More recently mu metal is considered to be astm a753 alloy 4 and is. Mpp kool mu ferrite bsat t perm power loss w kg permeability turns 1 56 250 80 50 1 1 0 1 4 75 680 50 1 8 75 125 65 50 1 1 1 1 125 140 50 1 1 35 gap dependen t 65 25 2 1 assumptions based on 50 permeability with 50 oe of bias 2500 perm ferrite was used for comparison core loss comparison at 100 khz and 1 kg bac.

Although mu metal comes in various thicknesses it is a rather soft material and may prove to be difficult to work with if it is too thin. Mu metal is a unoriented nickel iron soft ferromagnetic alloy with very high permeability suitable for sensitive electronic equipment shielding. Ferromagnetism is derived from the unpaired electron spins in only a few metal atoms these being iron cobalt nickel manganese and some rare earth elements. Mumetal nickel permalloy sheet for magnetic field shielding 0 2t 30 90cm.

Mumetal doesn t block as much field strength as regular steel. Iron 99 8 pure 6 3 10 3. 5 0 10 3. The resulting field strength at the.