Kilpatrick Townsend & Stockton LLP
Iron-based alloy for a golf club head
An iron-based alloy for a golf club head includes: chromium in an amount ranging from 16.3 to 17.2 wt %; nickel in an amount ranging from 5.8 to 6.5 wt %; nitrogen in an amount ranging from 0.10 to 0.20 wt %; carbon in an amount ranging from 0.01 to 0.12 wt %; silicon in an amount ranging from 0.3 to 1.2 wt %; manganese in an amount ranging from 0.3 to 1.2 wt %; and a balance of iron and impurities, based on a total weight of the iron-based alloy. The alloy has a duplex-phase microstructure including a martensite phase and 10 to 30 percent austenite phase, and has a tensile strength greater than 120 Ksi and an elongation greater than 35%.
O-Ta Precision Industry Co., Ltd.
A C A C C A C
A63B C22C A63B C22C C22C A63B C22C
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Chuan-Hsien Chih-Yeh Jui-Ming
Chang Chao Su