| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a golf club head having excellent durability and excellent shock absorbing performance. SOLUTION: In a ball hitting surface of this golf club head 2, a metallic face member 25 is partly embedded and fixed. The face member 25 comprises a metal member, and it comprises metal such as steel, stainless steel, titanium, and aluminum or their alloys. Hardness of a center zone 25a of the face member 25 is set to HRC35-80, and that of a peripheral zone 25b is set to HRC20-30. The hardness in each of the zones 25a, 25b is not constant within the zone, but it is set to continuously become smaller from the center of the face member 25 of the maximum hardness to the peripheral part. Plural linear grooves are formed in the surface of the face member 25.</p> |
