To provide a manufacturing method of a metal-made component assembled at least two kinds of members having different materials without developing defect as the conventional technique.

This component is pre-assembled by inserting the first member composed of a temperable steel material into a recessed part of the second member composed of a soft magnetic iron material and in the pre-assembled component, the copper-base brazing filler metal is applied to i.e., the recessed part in the contact region between the first member and the second member. Thereafter, the component is heated to higher temp. than the m.p. of the brazing filler metal, and after losing the liquid-state brazing filler metal in the contact region of both members, the component is cooled, then is heated at least one time to the tempering temp. for the first steel member, kept to over the prescribed time and successively, sufficiently cooled.