PURPOSE: To obtain a secure joint by constituting a shim by the concentric arrangement of alloys or metals varying in melting temp. as the shim for brazing is heated from the outer side toward the center in induction heating, thereby making the molten state adequate and preventing the network structuring of the joint part.

CONSTITUTION: This method has procedures of disposing the shim 18 for brazing having at least two regions (30, 32) having the different melting temps., placing the shim on the surface of a first body (12), installing the surface of a second body (10) onto the shim so as to form an unjoined assembly, applying heat to the assembly so as to melt the shim and allowing the assembly to cool down to a temp. at which all the regions described above of the shim turns solid.