CAST BRONZE 660 这个材料的成分---[请教]
<DIV class=t_msgfont id=message1039772>关于bronze660的介绍如下：<BR><BR>成分：<BR><BR>cu: 83%<BR>Pb: 7%<BR>Sn: 7%<BR>Zn: 3%<BR>660 bearing bronze is a continuously cast alloy that has exllent load capacity qualities and good machinability used for general purpose bushing, washing.</DIV><P><BR style="CLEAR: both">这个是英文说明。</P>
<P>我们公司的外协说这个很难搞到。请问国内有没有这个材料？？</P>
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