非合金钢、低合金钢和合金钢合金元素规定含量界限值
非合金钢、低合金钢和合金钢合金元素规定含量界限值<B></B><DIV align=center><B>(GB／T 13304—1991)</B><B></B></DIV>
<DIV align=center>
<TABLE style="WIDTH: 640px; HEIGHT: 629px" cellSpacing=0 cellPadding=0 border=1>
<TBODY>
<TR>
<TD vAlign=top width=138 rowSpan=2>
<DIV align=right>按化学成份</DIV>
<DIV>合金元素</DIV></TD>
<TD vAlign=top width=546 colSpan=3>
<DIV align=center>合金元素规定含量(质量分数)界限值(％)</DIV></TD></TR>
<TR>
<TD vAlign=top width=97>
<DIV align=center>非合金钢</DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>低合金钢</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>合金钢</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>A1</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．10< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>—</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．10</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>B</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><0．0005</DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>—</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥0．O005</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Bi</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．10< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>—</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．10</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Cr</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．30< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>O．30～<O．50< DIV></DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．50</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>C0</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><0.10</DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>—</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．10</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Cu</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．10< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>O．10～<O．50< DIV></DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥0.50</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Mn</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><1．00</DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>1．00～<1.40</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥1.4</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Mo</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．05< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>0.05～<0.10</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．10</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Ni</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．30< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>0.30～<0.50</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．50</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Nb</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><0.02</DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>0.02～<0.06</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．06</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Pb</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center>(O．40</DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>—</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥0.40</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Se</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．10< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>—</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥0.10</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Si</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．50< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>O．50～<0.90</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．90</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Te</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．10< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>—</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．10</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Tj</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．05< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>O．05～<O．15< DIV></DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．13</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>W</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><O．10< DIV></DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>—</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥0.10</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>V</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><0.04</DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>O．04～<O．12< DIV></DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥O．12</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>Zr</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><0.05</DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>0.05～<0.12</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥0.12</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>La系 (每一种元素)</DIV></TD>
<TD vAlign=top width=97>
<DIV align=center><0.02</DIV></TD>
<TD vAlign=top width=137>
<DIV align=center>0.02～<0.05</DIV></TD>
<TD vAlign=top width=312>
<DIV align=center>≥0.05</DIV></TD></TR>
<TR>
<TD vAlign=top width=138>
<DIV align=center>其他规定元素</DIV>
<DIV align=center>(S、P、c、N除外)</DIV></TD>
<TD width=97>
<DIV align=center><0.05</DIV></TD>
<TD width=137>
<DIV>—</DIV></TD>
<TD width=312>
<DIV align=center>≥0.05</DIV></TD></TR></TBODY></TABLE></DIV>
<DIV align=left>注：La系元素含量，也可为混合稀土含量总量。</DIV>
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