Golf-club head
AssigneesShintomi Golf Co., Ltd., Kasco Corporation
InventorsDaisaku Yoshida, Katsumi Yamano
Life of this patent
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Abstract
A golf club head is formed of an alloy steel which comprises at most 0.2 wt. % of C, 0.05-1.0 wt. % of Si, at most 0.5 wt. % of Mn, 3.0-8.0 wt. % of Ni, 10.0-20.0 wt. % of Cr, 3.0-8.0 wt. % of Mo and 10.0-20.0 wt. % of Co, the remainder being substantially Fe, and has a metallic texture composed principally of martensite.
Claims16
A golf-club head comprising a face, said face comprising an alloy steel which comprises at most 0.2 wt. % of C, 0.05-1.0 wt. % of Si, at most 0.5 wt. % of Mn, 3.0-8.0 wt. % of Ni, 10.0-20.0 wt. % of Cr, 3.0-8.0 wt. % of Mo and 10.0-20.0 wt. % of Co, the remainder being substantially Fe, and has a metallic texture composed principally of martensite,
- wherein said golf-club head has a face with a thickness of up to 2.7 mm.
Dependencies are inferred from the claim text.