| 摘要 |
A golf club head comprises a ball-hitting face made of a steel alloy containing maximum amounts of 0.03% of C by weight, 0.2% of Si by weight, 0.2% of Mn by weight, 0.2% of P by weight, 0.02% of S by weight, 10.5-11.0% of Cr by weight, 1.8-2.2% of Mo by weight, 9.5-10.5% of Ni by weight, 0.9-1.2% of Ti by weight, 0.5% of Al by weight, 0.1% of Cu by weight, 0.3% of Nb by weight, 0.3% of B by weight, 0.01% of N by weight, 0.1% of V by weight, 0.1% of W by weight, and the rest being Fe. The steel alloy is made by a metallurgical method involving two vacuum melting processes. The texture of the steel alloy is mainly formed of martensite.
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