Soft magnetic alloys and magnetic components

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[Problem] We provide a soft magnetic alloy with high saturation magnetic flux density Bs and high corrosion resistance at the same time. Solution : A soft magnetic alloy comprising a component and Mn consisting of a composition formula (Fe (Fe (1-(α + β)) CoαNiβ) 1-γX1γ) (1-(a+b+c+d+e)) BaPbSicCdCre (atomic number ratio). X1 is one or more selected from Ti, Zr, Hf, Nb, Ta, Mo, W, Al, Ga, Ag, Zn, S, Ca, Mg, V, Sn, As, Sb, Bi, N, O, Au, Cu, rare earth element, and platinum group element. a to e, α to γ are within a predetermined range. The content of Mn is as f (at%), and 0. 002≦f＜3． It is 0. The corrosion potential is -630mV or more -50mV or less, and the corrosion current density is 0.00 mV. It is 3 μA / cm 2 or more and 45 μA / cm 2 or less. [Selection Figure]Figure 5