| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a weight of a golf club which makes the merit of a precision casting process applicable to the manufacture of a tungsten iron nickel weight alloy. <P>SOLUTION: The compositions by weight percentage are 12-15% iron, 11-13% chromium, 25-30% tungsten and some nickel. Proper amounts of elements such as carbon below 0.01%, 0.1-0.6% silicon, manganese below 0.01%, phosphorous below 0.01%, sulfur below 0.01%, copper below 0.01% and the like are added. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
