Invention Grant
- Patent Title: Titanium alloy for golf club face
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Application No.: US14377923Application Date: 2012-02-24
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Publication No.: US09884229B2Publication Date: 2018-02-06
- Inventor: Akira Kawakami , Hideki Fujii
- Applicant: Akira Kawakami , Hideki Fujii
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- International Application: PCT/JP2012/054619 WO 20120224
- International Announcement: WO2013/125038 WO 20130829
- Main IPC: C22C14/00
- IPC: C22C14/00 ; A63B53/04 ; C22F1/18

Abstract:
The present invention provides, as a material for a golf club face of a driver, an iron or the like, a titanium alloy which satisfies the regulation for a coefficient of restitution, and has high Young's modulus and tensile strength and also has excellent hot and cold workability. The titanium alloy for a golf club face according to the present invention comprises, in percent by mass, 1.0 to 3.5% of Al, 0.5 to 1.4% of Fe, 0.2 to 0.5% or O and 0.002 to 0.030% of N, and the balance of Ti with inevitable impurities, wherein an α-phase is strengthened by combined addition of O and Al, and inexpensive Fe is selected as a β-phase stabilizing element, leading to high strength and high Young's modulus in combination. The content of Al causing deterioration of hot workability is limited to a low value, leading to low rolling load during hot rolling, and thus flaws and edge cracking are unlikely to occur during hot rolling.
Public/Granted literature
- US20150024871A1 TITANIUM ALLOY FOR GOLF CLUB FACE Public/Granted day:2015-01-22
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