Golf club head and manufacturing method for the same

摘要

In a golf club head having a face body (1), the face body (1) is composed of a hybrid of an amorphous phase layer(G' ) and a crystal phase layer (K' ). The crystal phase layer(K' ) is disposed on a reverse face (1b) side of a face (1a). And, thickness of the face body (1) is 0. 5mm to 5. 0mm, thickness of the amorphous phase layer (G' ) is, on average in whole area of the face body (1), more than 50% of the thickness of the face body (1), and thickness of the crystal phase layer(K' ) is arranged to be 0. 01mm to 3. 0mm.