Patent ID: 8783086

Claim:
A method for producing a golf club head having a hollow structure and including: a head main body that is made of a metal material and has an opening; and a cover that is provided to cover the opening of the head main body and is made of a low-specific-gravity material having a lower specific gravity than the metal material, the method comprising a step of preparing a first workpiece having the opening, the step of preparing a first workpiece including pressing a sheet material having a uniform thickness to form a supporting part around the opening, the supporting part being recessed stepwise from a head finished surface for supporting a peripheral edge portion of the cover, wherein a rigidity index GA of the cover which is defined as a product of a tensile strength σ 1 of the cover and the thickness t 1 of the cover measured in the peripheral edge part supported by the supporting part is 0.45 to 0.80 times a rigidity index GB of the supporting part of the head main body which is defined as a product of a tensile strength σ 2 of the supporting part and the thickness t 2 of the supporting part.