非铁合金的收缩率
<TABLE class=table1 borderColor=#b5dba2 cellSpacing=0 width=770 border=1><TBODY>
<TR>
<TD class=12bg align=middle bgColor=#e9fde4>合金种类</TD>
<TD class=12bg align=middle bgColor=#e9fde4>阻碍收缩率(%)</TD>
<TD class=12bg align=middle bgColor=#e9fde4>自由收缩率(%)</TD></TR>
<TR>
<TD>锡青铜 </TD>
<TD>1.2 </TD>
<TD>1.4 </TD></TR>
<TR>
<TD>无锡青铜 </TD>
<TD>1.6-1.8 </TD>
<TD>2.0-2.2 </TD></TR>
<TR>
<TD>锌黄铜 </TD>
<TD>1.5-1.7 </TD>
<TD>1.8-2.0 </TD></TR>
<TR>
<TD>硅黄铜 </TD>
<TD>1.6-1.7 </TD>
<TD>1.7-1.8 </TD></TR>
<TR>
<TD>锰黄铜 </TD>
<TD>1.8-2.0 </TD>
<TD>2.0-2.3 </TD></TR>
<TR>
<TD>铝硅合金 </TD>
<TD>0.8-1.0 </TD>
<TD>1.0-1.2 </TD></TR>
<TR>
<TD>铝铜合金(7-12%Cu) </TD>
<TD>1.4 </TD>
<TD>1.6 </TD></TR>
<TR>
<TD>铝镁合金 </TD>
<TD>1.0 </TD>
<TD>1.3 </TD></TR>
<TR>
<TD>镁合金 </TD>
<TD>1.2 </TD>
<TD>1.6 </TD></TR></TBODY></TABLE>
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