SAW BLADE

PROBLEM TO BE SOLVED: To provide a saw blade which suppresses heat storage of the blade when rotating at high speed while holding satisfactory strength of a substrate, and prevents occurrence of trembling of a hand and rubbing of a barrel part due to it so as to improve cutting performance of the saw blade. SOLUTION: This saw blade is constituted by forming: crest parts 21 having circular arc cross section; and flat trough parts 22 alternately on both of front and rear side faces of the steel substrate except an ultra-abrasive grain layer 11 attaching part, a slit 25 forming part, a substrate hole part 27 forming part, and a fastening part 23 on a power tool by tilting them radially and backward from a front part in the direction of rotation of the substrate to form the corrugated substrate, and also by forming a plurality of deep groove parts continued to the trough parts, and a plurality of shallow groove parts adjacent to the slit forming part and the substrate hole part forming part on both of front and rear side faces of the ultra-abrasive grain layer attached to an outer peripheral fringe part of the substrate, respectively. COPYRIGHT: (C)2008,JPO&INPIT