Golf club head and low density alloy thereof
AssigneeO-TA Precision Industry Co., Ltd.
InventorsChuan-Hsien Chang, Jui-Ming Su, Chih-Yeh Chao
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Abstract
A golf club head and a low density alloy thereof are provided. The low density alloy has a balanced weight percentage of titanium, 10˜11 wt % aluminum, and trace elements including (C+N+O) <0.2 wt %, silicon <0.2 wt %, and (Fe+Cr+V+Mo) <0.4 wt %. The golf club head has a tensile strength of 90˜110 kips/in2, and a density of 4.18˜4.30 g/cm3. Through heat treatment at a high temperature of 925±25° C., the precipitation or α2 phase of the interfacial interphase can be avoided, and thus the embrittlement phenomena can be improved.
Claims6
A golf club head having at least a portion of the golf club head made of a titanium-aluminum alloy, the titanium-aluminum alloy comprising:
- 10˜11 wt % aluminum;
- trace elements comprising (C+N+O)<0.2 wt %,Si<0.2 wt %, and (Fe+Cr+V+Mo) <0.4 wt %;
- and
- the balance being titanium;
- wherein the titanium-aluminum alloy is subject to a heat treatment at 925 ±25° C. for 1-4hours to obtain a tensile strength in a range of 90˜110 kips/in2and a density in a range of 4.18˜4.30 g/cm3, and the titanium-aluminum alloy after the heat treatment has no α2-phase in an interfacial interphase thereof.
A low density alloy of a golf club head, comprising:
- 10˜11 wt % aluminum,
- trace elements comprising (C+N+O)<0.2 wt %, Si<0.2 wt %, and (Fe+Cr+V+Mo) <0.4 wt %;
- and
- the balance being titanium,
- wherein the low density alloy has a tensile strength in a range of 90˜110 kips/in2, a density in a range of 4.18˜4.30 g/cm3 and an elongation in a range of 6˜15%, and the low density alloy has no α2-phase in an interfacial interphase thereof.
Dependencies are inferred from the claim text.