The soft magnetic alloy and magnetic parts

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A soft magnetic alloy comprising a main component having a compositional formula of (Fe (1-(±+²)) X1 ± X2 ² ) (1-(a+b+c)) M a B b P c , and a sub component including at least C, S and Ti, wherein X1 is one or more selected from the group consisting of Co and Ni, X2 is one or more selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, and rare earth elements, "M" is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W, and V, 0.020 ‰¤ a ‰¤ 0.14, 0.020 ‰¤ b ‰¤ 0.20, 0 ‰¤ c ‰¤ 0.040, ± ‰¥ 0, ² ‰¥ 0, and 0 ‰¤ ± + ² ‰¤ 0.50 are satisfied, when entire said soft magnetic alloy is 100 wt%, a content of said C is 0.001 to 0.050 wt%, a content of said S is 0.001 to 0.050 wt%, and a content of said Ti is 0.001 to 0.080 wt%, and when a value obtained by dividing the content of said C by the content of said S is C/S, then C/S satisfies 0.10 ‰¤ C/S ‰¤ 10.