美国标准低温下用铁素体和马氏体铸钢的残余元素含量（质量分数）（%）
<TABLE width=748 border=1><TBODY>
<TR>
<TD colSpan=2>
<DIV align=center>钢号</DIV></TD>
<TD rowSpan=2>
<DIV align=center>Cu</DIV></TD>
<TD rowSpan=2>
<DIV align=center>Ni</DIV></TD>
<TD rowSpan=2>
<DIV align=center>Cr </DIV></TD>
<TD rowSpan=2>
<DIV align=center>Mo</DIV></TD>
<TD rowSpan=2>
<DIV align=center>W</DIV></TD>
<TD rowSpan=2>
<DIV align=center>V</DIV></TD>
<TD rowSpan=2>
<DIV align=center>残余元素</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>ASTM</DIV></TD>
<TD>
<DIV align=center>UNS</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>A1Q</DIV></TD>
<TD>
<DIV align=center></DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>0.40</DIV></TD>
<TD>
<DIV align=center>0.25</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>1.00</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>A2Q</DIV></TD>
<TD>
<DIV align=center>J02503</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>0.40</DIV></TD>
<TD>
<DIV align=center>0.25</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>1.00</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>B2N，B2Q</DIV></TD>
<TD>
<DIV align=center>J22501</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.40</DIV></TD>
<TD>
<DIV align=center>0.25</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>1.00</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>B3N，B3Q</DIV></TD>
<TD>
<DIV align=center>J31500</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.40</DIV></TD>
<TD>
<DIV align=center>0.25</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>1.00</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>B4N，B4Q</DIV></TD>
<TD>
<DIV align=center>J41501</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.40</DIV></TD>
<TD>
<DIV align=center>0.25</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>1.00</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>C1Q</DIV></TD>
<TD>
<DIV align=center>J12582</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.40</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>1.00</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>D1N1，D1Q1</DIV></TD>
<TD>
<DIV align=center>J22092</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.10</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>1.00</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>D1N2，D1Q3</DIV></TD>
<TD>
<DIV align=center>J22092</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.10</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>1.00</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>D1N3，D1Q3</DIV></TD>
<TD>
<DIV align=center>J22092</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.10</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>1.00</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>E1Q</DIV></TD>
<TD>
<DIV align=center>J42220</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>0.70</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>E2N，E2Q</DIV></TD>
<TD>
<DIV align=center>J42065</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.10</DIV></TD>
<TD>
<DIV align=center>0.03</DIV></TD>
<TD>
<DIV align=center>0.70</DIV></TD></TR>
<TR>
<TD height=17>
<DIV align=center>E3N</DIV></TD>
<TD>
<DIV align=center>J91500</DIV></TD>
<TD>
<DIV align=center>0.50</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.10</DIV></TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>
<DIV align=center>0.70</DIV></TD></TR></TBODY></TABLE>
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