低合金高强度结构钢的牌号和化学成分
<TABLE style="WIDTH: 645px; HEIGHT: 515px" cellSpacing=0 cellPadding=0 width=645 align=center border=1><TBODY>
<TR>
<TD width="5%" rowSpan=2>
<DIV align=center><FONT size=2>牌号</FONT></DIV></TD>
<TD width="3%" rowSpan=2>
<DIV align=center><FONT size=2>等</FONT></DIV>
<DIV align=center><FONT size=2>级</FONT></DIV></TD>
<TD width="90%" colSpan=11>
<DIV align=center><FONT size=2>化学成分(质量分数)(％)</FONT></DIV></TD></TR>
<TR>
<TD width="7%">
<DIV align=center><FONT size=2>C≤</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>Mn</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>Si</FONT></DIV>
<DIV align=center><FONT size=2>≤</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>P</FONT></DIV>
<DIV align=center><FONT size=2>≤</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>S</FONT></DIV>
<DIV align=center><FONT size=2>≤</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>V</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>Nb</FONT></DIV></TD>
<TD width="9%">
<DIV align=center><FONT size=2>Ti</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>Al≥</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>Cr≤</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>Ni≤</FONT></DIV></TD></TR>
<TR>
<TD width="5%" rowSpan=2>
<DIV align=center><FONT size=2>Q295</FONT></DIV></TD>
<TD width="3%">
<DIV align=center><FONT size=2>A</FONT></DIV></TD>
<TD width="7%" rowSpan=2>
<DIV align=center><FONT size=2>O.16</FONT></DIV></TD>
<TD width="7%" rowSpan=2>
<DIV align=center><FONT size=2>0.80</FONT></DIV>
<DIV align=center><FONT size=2>～1.50</FONT></DIV></TD>
<TD width="7%" rowSpan=2>
<DIV align=center><FONT size=2>0.55</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.045</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.045</FONT></DIV></TD>
<TD width="8%" rowSpan=2>
<DIV align=center><FONT size=2>0.02</FONT></DIV>
<DIV align=center><FONT size=2>～O.15</FONT></DIV></TD>
<TD width="8%" rowSpan=2>
<DIV align=center><FONT size=2>0.015</FONT></DIV>
<DIV align=center><FONT size=2>～O.060</FONT></DIV></TD>
<TD width="9%" rowSpan=2>
<DIV align=center><FONT size=2>O.02</FONT></DIV>
<DIV align=center><FONT size=2>～0.20</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>B</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.040</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.040</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD></TR>
<TR>
<TD width="5%" rowSpan=5>
<DIV align=center><FONT size=2>Q345</FONT></DIV></TD>
<TD width="3%">
<DIV align=center><FONT size=2>A</FONT></DIV></TD>
<TD width="7%" rowSpan=3>
<DIV align=center><FONT size=2>O.20</FONT></DIV></TD>
<TD width="7%" rowSpan=5>
<DIV align=center><FONT size=2>1.00</FONT></DIV>
<DIV align=center><FONT size=2>～1.60</FONT></DIV></TD>
<TD width="7%" rowSpan=5>
<DIV align=center><FONT size=2>0.55</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.045</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.045</FONT></DIV></TD>
<TD width="8%" rowSpan=5>
<DIV align=center><FONT size=2>0.02</FONT></DIV>
<DIV align=center><FONT size=2>～O.15</FONT></DIV></TD>
<TD width="8%" rowSpan=5>
<DIV align=center><FONT size=2>0.015</FONT></DIV>
<DIV align=center><FONT size=2>～O.060</FONT></DIV></TD>
<TD width="9%" rowSpan=5>
<DIV align=center><FONT size=2>0.02</FONT></DIV>
<DIV align=center><FONT size=2>～O.20</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>B</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.040</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.040</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>C</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.035</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.035</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>D</FONT></DIV></TD>
<TD width="7%" rowSpan=2>
<DIV align=center><FONT size=2>O.18</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.030</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.030</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>E</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.025</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.025</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2></FONT></DIV></TD></TR>
<TR>
<TD width="5%" rowSpan=5>
<DIV align=center><FONT size=2>Q390</FONT></DIV></TD>
<TD width="3%">
<DIV align=center><FONT size=2>A</FONT></DIV></TD>
<TD width="7%" rowSpan=5>
<DIV align=center><FONT size=2>0.20</FONT></DIV></TD>
<TD width="7%" rowSpan=5>
<DIV align=center><FONT size=2>1.00</FONT></DIV>
<DIV align=center><FONT size=2>～1.60</FONT></DIV></TD>
<TD width="7%" rowSpan=5>
<DIV align=center><FONT size=2>O.55</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.045</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.045</FONT></DIV></TD>
<TD width="8%" rowSpan=5>
<DIV align=center><FONT size=2>O.02</FONT></DIV>
<DIV align=center><FONT size=2>～O.20</FONT></DIV></TD>
<TD width="8%" rowSpan=5>
<DIV align=center><FONT size=2>O.015～</FONT></DIV>
<DIV align=center><FONT size=2>0.060</FONT></DIV></TD>
<TD width="9%" rowSpan=5>
<DIV align=center><FONT size=2>O.02</FONT></DIV>
<DIV align=center><FONT size=2>～O.20</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.30</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>0.70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>B</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.040</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.040</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.30</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>C</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.035</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.035</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>0.30</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>D</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.030</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.030</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.30</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>0.70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>E</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.025</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.025</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.30</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>0.70</FONT></DIV></TD></TR>
<TR>
<TD width="5%" rowSpan=5>
<DIV align=center><FONT size=2>Q420</FONT></DIV></TD>
<TD width="3%">
<DIV align=center><FONT size=2>A</FONT></DIV></TD>
<TD width="7%" rowSpan=5>
<DIV align=center><FONT size=2>O.20</FONT></DIV></TD>
<TD width="7%" rowSpan=5>
<DIV align=center><FONT size=2>1.00</FONT></DIV>
<DIV align=center><FONT size=2>～</FONT></DIV>
<DIV align=center><FONT size=2>1.70</FONT></DIV></TD>
<TD width="7%" rowSpan=5>
<DIV align=center><FONT size=2>O.55</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.045</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.045</FONT></DIV></TD>
<TD width="8%" rowSpan=5>
<DIV align=center><FONT size=2>O.02</FONT></DIV>
<DIV align=center><FONT size=2>～0.20</FONT></DIV></TD>
<TD width="8%" rowSpan=5>
<DIV align=center><FONT size=2>O.015</FONT></DIV>
<DIV align=center><FONT size=2>～0.060</FONT></DIV></TD>
<TD width="9%" rowSpan=5>
<DIV align=center><FONT size=2>0.02</FONT></DIV>
<DIV align=center><FONT size=2>～O.20</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.40</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>B</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.040</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.040</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2></FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.40</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>C</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.035</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.035</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>0.40</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>D</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.030</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.030</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.40</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>E</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.025</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.025</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.40</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.70</FONT></DIV></TD></TR>
<TR>
<TD width="5%" rowSpan=3>
<DIV align=center><FONT size=2>Q460</FONT></DIV></TD>
<TD width="3%">
<DIV align=center><FONT size=2>C</FONT></DIV></TD>
<TD width="7%" rowSpan=3>
<DIV align=center><FONT size=2>O.20</FONT></DIV></TD>
<TD width="7%" rowSpan=3>
<DIV align=center><FONT size=2>1.00</FONT></DIV>
<DIV align=center><FONT size=2>～</FONT></DIV>
<DIV align=center><FONT size=2>1.70</FONT></DIV></TD>
<TD width="7%" rowSpan=3>
<DIV align=center><FONT size=2></FONT></DIV>
<DIV align=center><FONT size=2>O.55</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.035</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.035</FONT></DIV></TD>
<TD width="8%" rowSpan=3>
<DIV align=center><FONT size=2>0.02</FONT></DIV>
<DIV align=center><FONT size=2>～0.20</FONT></DIV></TD>
<TD width="8%" rowSpan=3>
<DIV align=center><FONT size=2>0.015</FONT></DIV>
<DIV align=center><FONT size=2>～O.060</FONT></DIV></TD>
<TD width="9%" rowSpan=3>
<DIV align=center><FONT size=2>0.02</FONT></DIV>
<DIV align=center><FONT size=2>～O.20</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>O.70</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>0.70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>D</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.030</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.030</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>0.70</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>0.70</FONT></DIV></TD></TR>
<TR>
<TD width="3%">
<DIV align=center><FONT size=2>E</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>0.025</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.025</FONT></DIV></TD>
<TD width="8%">
<DIV align=center><FONT size=2>O.015</FONT></DIV></TD>
<TD width="7%">
<DIV align=center><FONT size=2>0.70</FONT></DIV></TD></TR></TBODY></TABLE>
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