| 摘要 |
A golf club head comprises a face portion of which front face defines a club face, wherein at least a part of the face portion is formed by a unidirectionally rolled plate of a titanium alloy having alpha phase such as alpha titanium alloys and alpha+beta titanium alloys, and the unidirectional rolled direction of the plate is oriented in the toe-heel direction of the head. At least 50% in area of the face portion is formed by the unidirectionally rolled plate. The angle (theta) between the rolled direction and the toe-heel direction is not more than 15 degrees.
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