炼钢用生铁（GB/T1717-1998）
<SPAN id=_ctl0_lblContent>(1)用途主要用作炼钢原料。<P>(2)牌号和化学成分见表2—2。 </P>
<P align=center>表2-2炼钢用生铁的牌号和化学成分</P>
<TABLE style="WIDTH: 635px; HEIGHT: 428px" cellSpacing=0 cellPadding=0 align=center border=1>
<TBODY>
<TR>
<TD vAlign=top width=211 colSpan=3>
<DIV align=center><FONT size=2>牌 号</FONT></DIV></TD>
<TD vAlign=top width=113>
<DIV align=center><FONT size=2>L04</FONT></DIV></TD>
<TD vAlign=top width=108>
<DIV align=center><FONT size=2>L08</FONT></DIV></TD>
<TD vAlign=top width=120>
<DIV align=center><FONT size=2>Ll0</FONT></DIV></TD></TR>
<TR>
<TD width=73 rowSpan=13>
<DIV align=center><FONT size=2>化学成分(质量分数)(％)</FONT></DIV></TD>
<TD vAlign=top width=138 colSpan=2>
<DIV align=center><FONT size=2>C</FONT></DIV></TD>
<TD vAlign=top width=341 colSpan=3>
<DIV align=center><FONT size=2>≥3.50</FONT></DIV></TD></TR>
<TR>
<TD vAlign=top width=138 colSpan=2>
<DIV align=center><FONT size=2>Si</FONT></DIV></TD>
<TD vAlign=top width=113>
<DIV align=center><FONT size=2>≤0．45</FONT></DIV></TD>
<TD vAlign=top width=108>
<DIV align=center><FONT size=2>>0．45～0．85</FONT></DIV></TD>
<TD vAlign=top width=120>
<DIV align=center><FONT size=2>>0．85～1.25</FONT></DIV></TD></TR>
<TR>
<TD width=70 rowSpan=3>
<DIV align=center><FONT size=2>Mn</FONT></DIV></TD>
<TD width=68>
<DIV align=center><FONT size=2>一组</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>≤0.40</FONT></DIV></TD></TR>
<TR>
<TD width=68>
<DIV align=center><FONT size=2>二组</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>>O．40～1.00</FONT></DIV></TD></TR>
<TR>
<TD width=68>
<DIV align=center><FONT size=2>三组</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>>1．00～2.00</FONT></DIV></TD></TR>
<TR>
<TD width=70 rowSpan=4>
<DIV align=center><FONT size=2>P</FONT></DIV></TD>
<TD width=68>
<DIV align=center><FONT size=2>特级</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>≤O．100</FONT></DIV></TD></TR>
<TR>
<TD width=68>
<DIV align=center><FONT size=2>一级</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>>O．100～O．150</FONT></DIV></TD></TR>
<TR>
<TD width=68>
<DIV align=center><FONT size=2>二级</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>>O．150～O．250</FONT></DIV></TD></TR>
<TR>
<TD width=68>
<DIV align=center><FONT size=2>三级</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>>O．250～O．400</FONT></DIV></TD></TR>
<TR>
<TD width=70 rowSpan=4>
<DIV align=center><FONT size=2>S</FONT></DIV></TD>
<TD width=68>
<DIV align=center><FONT size=2>特类</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>≤0.020</FONT></DIV></TD></TR>
<TR>
<TD width=68>
<DIV align=center><FONT size=2>一类</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>>O．020～O．030</FONT></DIV></TD></TR>
<TR>
<TD width=68>
<DIV align=center><FONT size=2>二类</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>>O．030～0.050</FONT></DIV></TD></TR>
<TR>
<TD width=68>
<DIV align=center><FONT size=2>三类</FONT></DIV></TD>
<TD width=341 colSpan=3>
<DIV align=center><FONT size=2>>O．050～O．070</FONT></DIV></TD></TR></TBODY></TABLE>
<P>注：各牌号生铁的含碳量，均不作报废依据。</SPAN></P>
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