Patent ID: 8047931

Claim:
A method for manufacturing a golf club head having a club face having a sweet spot (SS) and a toe end point (TP), comprising: designing a contour shape of the club face so that the club face has a pointed toe end on the upper side of a horizontal line (HL) drawn passing through the sweet spot (SS) such that said toe end point (TP) which is the farthest point on the edge of the club face from the sweet spot (SS) on the toe-side thereof is positioned at the pointed toe end, and a straight line (K) drawn from the sweet spot (SS) to said toe end point (TP) is inclined at an angle (delta) of from 15 to 35 degrees with respect to the horizontal line, cutting out a primary face plate for forming the club face from a unidirectionally rolled plate of an alpha+beta titanium alloy having a rolled direction (RD) such that said straight line (K) becomes in parallel with the rolled direction (RD), wherein said titanium alloy has alpha phase crystals of a hexagonal closely packed structure whose hexagonal symmetry axis is oriented in the rolled direction (RD), forming a thicker central part and a thin annular part of the face plate by depressing the rear surface of the primary face plate with a die pressing machine, and making the golf club head by using the pressed cut-out face plate and a main shell body to which the face plate is fixed.