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Magnetic shielding, electronics noise reduction metal
Each lot is for One large 7.75 x 12.38 x .005" thick sheet of Ultraperm 80 features a peel and stick surface on one side of the sheet. Ultraperm 80 sheet is a nickel-iron alloy (80.3% nickel, 14.3% iron, plus 14.3 %molybdenum). It has very high magnetic permeability (400000 @ 0.73-0.5mm -50Hz maximal permability) which makes Ultraperm 80 very effective at screening static or low-frequency magnetic fields which are difficult to attenuate with other means. The Ultraperm 80 is similiar to Mu-metal but the copper which is added to make Mu metal more ductile is not added to this sheet. This shielding is commonly found around transformers in high end audio equipment, cathode ray tubes in oscilloscopes, photomultipliers, magnetic phono cartridges, hard drives, super conducting circuits, etc.
