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Magnetic Characteristics



Grade



Remanence (Residual Flux Density)



Coercive Force - Intrinsic Coercive Force



Br



Hcb



Hcj



KGs



T



KOe



KA/m



KOe



KA/m



Nom



Min



Nom



Min



Nom



Min



Nom



Min



Min



Min



N40



12.7



12.5



1.27



1.25



11.6



11.3



947



923



12



955



Grade



Maximum Energy Product



Temp.Coef.



Relative Recoil Permeability



Max Work Temperature



(BH)max



aBr



aHcj



µ rec





MGOe



KJ/m3



(20°C)



(20°C)



°C



Nom



Min



Nom



Min



(%/°C)



(%/°C)



L/D=0.7



N40



40



38



318



302



-0.11



-0.6



1.05



80



Physical Characteristics



Chararcteristic



Symbol



Unit



Data



Density



D



G/cm3



7.5



Vickers Hardness



Hv



D.P.N



570



Compression Strength



C.S



N/mm2



780



Thermal Expansion Coefficient



// 10>-6/K



3.4



| 10-6/K



-4.8



Electric Resistance



R



µO.cm



150

Plating Characteristics



Coating
Performance



Coating Thickness
(µm)



Corrosion-Resistant
in Salt Fog (Hr)



Coating Porosity



Ni-Cu-Ni



15-20



>48



<0.1





(Continued from Table Above)



Magnetic Flux Loss



Color



PCT



<0.1



silver



120°C 2atm 100%RH 12Hr


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