Electromagnetic Shield Effect Evaluation Test
(Frequency area measurement in the range from 50MHz to 20GHz)

The measurement result in the frequency area in the range from 50MHz to 20GHz found that CFA of 0.07mm is the limit of the measurement and that it has shielding effect of 80db or more.
Electromagnetic Shield Effect Measurement Test (II)
Manufacturer: KEYCOM Corp
Model: TF-3A
Measured Frequency: 100MHz - 3 GHz
Sample Dimensions: 40~50mm
Manufacturer: Anritsu Corporation
Model: 37247C
Measured Frequency: 40MHz - 20 GHz
Frequency Resolution: 1Hz
Maximum Input Level: 3dBm - 20dBm
Dynamic Level of Receiver: 90dB - 99dB
Output Level: 0dBm
Signal Source Output: -15dBm - 0dBm



Electromagnetic Shield Effect Evaluation Test (I)
Although thinner than a copper sheet, Copper-Iron Alloy is superior in electromagnetic shielding effect .





The Copper-Iron Alloy that is 57 times thinner than the copper sheet has an equal electromagnetic shielding characteristic.




Amazing electromagnetic shielding effect of Copper-Iron Alloy (with the use of crossing rolling directions)




Comparison of electromagnetic shielding effect




Electromagnetic shielding effect test result




M-H data




Impedance characteristic
Impedance characteristic is as follows based upon IACS (International Annealed Copper Standard)




±0.02µΩ is obtained for standard annealed copper.
However, the electro-conductive can descend depending upon the component proportion of the iron.



Metallic Character


Figure 1: Equilibrium state of Cu-Fe2ƒÎ
Note 1: The figure in ( ) shows the content %.
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