Patent ID: 7677134

Claim:
A forged product made of a magnesium alloy, the product comprising: a through hole making portion that defines a through hole that runs in a predetermined direction; and a bottom portion that lies on a plane intersecting with the predetermined direction, the bottom portion of the forged product having a thickness defined by a distance from a top surface of the bottom portion to a bottom surface of the bottom portion; wherein the through hole includes a first portion that has been formed by a forging process and a second portion that has been formed by removing a bottom of the through hole after the forging process; and a position of the second portion of the through hole is shifted toward the bottom portion with respect to a middle of the through hole in the predetermined direction; wherein the second portion of the through hole is substantially on a level with the bottom portion of the forged product; and a thickness of the second portion of the through hole is substantially equal to the thickness of the bottom portion.