| 摘要 |
<p>PURPOSE:To produce a tungsten alloy for golf club head, suitable for use in production of small-size head and enabling a golfer to select a putter of most suitable weight according to physical strength, ability, taste, etc., from putters of the same model. CONSTITUTION:This alloy is a tungsten alloy having a composition containing at least tungsten and one or >=2 metals selected from the group consisting of nickel, molybdenum, and cobalt, having specific gravity lower than that of tungsten. The content of the tungsten is 40-<100wt.%, and the content of the metal, such as nickel, is between a figure exceeding the amount permissible to inevitable impurity and <=60wt.%. By this method, a small and thin putter head of standard weight can be provided and also putters of dissimilar head weights of the same model can be provided. Further, by the regulation of specific gravity, the restrictions on head volume at the time of producing a head of standard weight can be relaxed and the design of heads of various shapes is made possible.</p> |
