铸造用磷铜钛低合金耐磨生铁（YB/T5210-1993）
<SPAN id=_ctl0_lblContent> (1)用途适用于内燃机汽缸套、火车车轮闸瓦、球磨机铁球、轧辊、拉丝机塔轮和车床床身导轨等耐磨机件的生产。<BR> (2)牌号和化学成分见表2_4。<P align=center>表2-4铸造用磷铜钛低合金耐磨生铁的牌号和化学成分</P>
<P>
<TABLE style="WIDTH: 635px; HEIGHT: 548px" cellSpacing=0 cellPadding=0 width=635 align=center border=1>
<TBODY>
<TR>
<TD width="22%" colSpan=3>
<DIV align=center><FONT size=2>铁 种</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>铸造用磷铜钛低合金耐磨生铁</FONT></DIV></TD></TR>
<TR>
<TD width="22%" colSpan=3>
<DIV align=center><FONT size=2>铁 号</FONT></DIV></TD>
<TD width="11%">
<DIV align=center><FONT size=2>NMZ34</FONT></DIV></TD>
<TD width="11%">
<DIV align=center><FONT size=2>NMZ30</FONT></DIV></TD>
<TD width="11%">
<DIV align=center><FONT size=2>NMZ26</FONT></DIV></TD>
<TD width="15%">
<DIV align=center><FONT size=2>NNZ22</FONT></DIV></TD>
<TD width="13%">
<DIV align=center><FONT size=2>NMZl8</FONT></DIV></TD>
<TD width="13%">
<DIV align=center><FONT size=2>NMZl4</FONT></DIV></TD></TR>
<TR>
<TD width="13%" rowSpan=14>
<DIV align=center><FONT size=2>化学成分</FONT></DIV>
<DIV align=center><FONT size=2>(质量分数：</FONT></DIV>
<DIV align=center><FONT size=2>(％)</FONT></DIV></TD>
<TD width="8%" colSpan=2>
<DIV align=center><FONT size=2>C</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>≥3.30</FONT></DIV></TD></TR>
<TR>
<TD width="8%" colSpan=2>
<DIV align=center><FONT size=2>Si</FONT></DIV></TD>
<TD width="11%">
<DIV align=center><FONT size=2>>3.2～3.6</FONT></DIV></TD>
<TD width="11%">
<DIV align=center><FONT size=2>>2.8～3.2</FONT></DIV></TD>
<TD width="11%">
<DIV align=center><FONT size=2>>2.4～2.8</FONT></DIV></TD>
<TD width="15%">
<DIV align=center><FONT size=2>>2.0O～2．40</FONT></DIV></TD>
<TD width="13%">
<DIV align=center><FONT size=2>>1.60～2.00</FONT></DIV></TD>
<TD width="13%">
<DIV align=center><FONT size=2>>1.25～l.6O</FONT></DIV></TD></TR>
<TR>
<TD width="3%" rowSpan=3>
<DIV align=center><FONT size=2>Mn</FONT></DIV></TD>
<TD width="4%">
<DIV align=center><FONT size=2>l组</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>≤O．50</FONT></DIV></TD></TR>
<TR>
<TD width="4%">
<DIV align=center><FONT size=2>2组</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>>O．50～O．90</FONT></DIV></TD></TR>
<TR>
<TD width="4%">
<DIV align=center><FONT size=2>3组</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>>O．90</FONT></DIV></TD></TR>
<TR>
<TD width="3%" rowSpan=3>
<DIV align=center><FONT size=2>S</FONT></DIV></TD>
<TD width="4%">
<DIV align=center><FONT size=2>1类</FONT></DIV></TD>
<TD width="63%" colSpan=5>
<DIV align=center><FONT size=2>≤0.03</FONT></DIV></TD>
<TD width="13%">
<DIV align=center><FONT size=2>≤O．04</FONT></DIV></TD></TR>
<TR>
<TD width="4%">
<DIV align=center><FONT size=2>2类</FONT></DIV></TD>
<TD width="63%" colSpan=5>
<DIV align=center><FONT size=2>≤0.04</FONT></DIV></TD>
<TD width="13%">
<DIV align=center><FONT size=2>≤0.05</FONT></DIV></TD></TR>
<TR>
<TD width="4%">
<DIV align=center><FONT size=2>3类</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>≤O．05</FONT></DIV></TD></TR>
<TR>
<TD width="3%" rowSpan=3>
<DIV align=center><FONT size=2>P</FONT></DIV></TD>
<TD width="4%">
<DIV align=center><FONT size=2>A级</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>O．35～0.60</FONT></DIV></TD></TR>
<TR>
<TD width="4%">
<DIV align=center><FONT size=2>B级</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>>O．60～O．90</FONT></DIV></TD></TR>
<TR>
<TD width="4%">
<DIV align=center><FONT size=2>C级</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>>O．90</FONT></DIV></TD></TR>
<TR>
<TD width="3%" rowSpan=2>
<DIV align=center><FONT size=2></FONT></DIV>
<DIV align=center><FONT size=2>Cu</FONT></DIV></TD>
<TD width="4%">
<DIV align=center><FONT size=2>A级</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>O．30～O．70</FONT></DIV></TD></TR>
<TR>
<TD width="4%">
<DIV align=center><FONT size=2>B级</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>>O．70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>Ti</FONT></DIV></TD>
<TD width="4%">
<DIV align=center><FONT size=2>----</FONT></DIV></TD>
<TD width="77%" colSpan=6>
<DIV align=center><FONT size=2>≥O．06</FONT></DIV></TD></TR></TBODY></TABLE></P>
<P>注：牌号中“NMz”符号为汉字“耐”、“磨”、“铸”三字的汉语拼音第一个字母的组合，牌号中的数字代表平均硅含量的千分之几。</SPAN></P>
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