| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sports equipment which utilizes the high specific gravity of tungsten as much as possible and enables mass production, even if it has a complicating shape. <P>SOLUTION: A tungsten alloy part 10 is formed on the equipment through casting. The tungsten alloy part 10 contains at least 15-70 wt.% tungsten, 15-70 wt.% iron and 9-65 wt.% nickel and has a specific gravity of 9 or more. <P>COPYRIGHT: (C)2003,JPO</p> |
