美国标准低温下用铁素体和马氏体铸钢的力学性能
<TABLE width=748 border=1><TBODY>
<TR>
<TD rowSpan=2>
<DIV align=center>钢号</DIV></TD>
<TD rowSpan=2>
<DIV align=center>热处理状态</DIV></TD>
<TD colSpan=4>
<DIV align=center>力学性能(不小于)</DIV></TD>
<TD colSpan=2>
<DIV align=center>夏比冲击吸收功/J</DIV></TD></TR>
<TR>
<TD>
<P align=center>σ <SUB>b</SUB>/MPa </P></TD>
<TD>
<P align=center>σ <SUB>0.2</SUB> / Mpa </P></TD>
<TD>
<P align=center>δ(%) </P></TD>
<TD>
<P align=center>ψ(%) </P></TD>
<TD>
<DIV align=center>平均值</DIV></TD>
<TD>
<DIV align=center>单个值</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>A1Q</DIV></TD>
<TD>
<DIV align=center>淬火和回火</DIV></TD>
<TD>
<DIV align=center>450</DIV></TD>
<TD>
<DIV align=center>240</DIV></TD>
<TD>
<DIV align=center>24</DIV></TD>
<TD>
<DIV align=center>35</DIV></TD>
<TD>
<DIV align=center>17</DIV></TD>
<TD>
<DIV align=center>14</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>A2Q</DIV></TD>
<TD>
<DIV align=center>淬火和回火</DIV></TD>
<TD>
<DIV align=center>485</DIV></TD>
<TD>
<DIV align=center>275</DIV></TD>
<TD>
<DIV align=center>22</DIV></TD>
<TD>
<DIV align=center>35</DIV></TD>
<TD>
<DIV align=center>20</DIV></TD>
<TD>
<DIV align=center>16</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>B2N,B2Q</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>485</DIV></TD>
<TD>
<DIV align=center>275</DIV></TD>
<TD>
<DIV align=center>24</DIV></TD>
<TD>
<DIV align=center>35</DIV></TD>
<TD>
<DIV align=center>20</DIV></TD>
<TD>
<DIV align=center>16</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>B3N,B3Q</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>485</DIV></TD>
<TD>
<DIV align=center>275</DIV></TD>
<TD>
<DIV align=center>24</DIV></TD>
<TD>
<DIV align=center>35</DIV></TD>
<TD>
<DIV align=center>20</DIV></TD>
<TD>
<DIV align=center>16</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>B4N,B4Q</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>485</DIV></TD>
<TD>
<DIV align=center>275</DIV></TD>
<TD>
<DIV align=center>24</DIV></TD>
<TD>
<DIV align=center>35</DIV></TD>
<TD>
<DIV align=center>20</DIV></TD>
<TD>
<DIV align=center>16</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>C1Q</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>515</DIV></TD>
<TD>
<DIV align=center>380</DIV></TD>
<TD>
<DIV align=center>22</DIV></TD>
<TD>
<DIV align=center>35</DIV></TD>
<TD>
<DIV align=center>20</DIV></TD>
<TD>
<DIV align=center>16</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>D1N1,D1Q1</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>585<BR>795</DIV></TD>
<TD>
<DIV align=center>380</DIV></TD>
<TD>
<DIV align=center>20</DIV></TD>
<TD>
<DIV align=center>35</DIV></TD>
<TD colSpan=2>
<DIV align=center>(由供需双方协议)<BR>(同上)</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>D1N2,D1Q3</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>655<BR>860</DIV></TD>
<TD>
<DIV align=center>515</DIV></TD>
<TD>
<DIV align=center>18</DIV></TD>
<TD>
<DIV align=center>35</DIV></TD>
<TD colSpan=2>
<DIV align=center>(由供需双方协议)<BR>(同上)</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>D1N3,D1Q3</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>725<BR>930</DIV></TD>
<TD>
<DIV align=center>585</DIV></TD>
<TD>
<DIV align=center>15</DIV></TD>
<TD>
<DIV align=center>30</DIV></TD>
<TD colSpan=2>
<DIV align=center>(由供需双方协议)<BR>(同上)</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>E1Q</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>620</DIV></TD>
<TD>
<DIV align=center>450</DIV></TD>
<TD>
<DIV align=center>22</DIV></TD>
<TD>
<DIV align=center>40</DIV></TD>
<TD>
<DIV align=center>41</DIV></TD>
<TD>
<DIV align=center>34</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>E2N1,E2Q1</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>620<BR>825</DIV></TD>
<TD>
<DIV align=center>485</DIV></TD>
<TD>
<DIV align=center>18</DIV></TD>
<TD>
<DIV align=center>35</DIV></TD>
<TD>
<DIV align=center>41<BR>41</DIV></TD>
<TD>
<DIV align=center>34<BR>34</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>E2N2,E2Q2</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>725<BR>930</DIV></TD>
<TD>
<DIV align=center>585</DIV></TD>
<TD>
<DIV align=center>15</DIV></TD>
<TD>
<DIV align=center>30</DIV></TD>
<TD>
<DIV align=center>27<BR>27</DIV></TD>
<TD>
<DIV align=center>20<BR>20</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>E2N3,E2Q3</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>795<BR>1000</DIV></TD>
<TD>
<DIV align=center>690</DIV></TD>
<TD>
<DIV align=center>13</DIV></TD>
<TD>
<DIV align=center>30</DIV></TD>
<TD>
<DIV align=center>20<BR>20</DIV></TD>
<TD>
<DIV align=center>16<BR>16</DIV></TD></TR>
<TR>
<TD>
<DIV align=center>E3N</DIV></TD>
<TD>
<DIV align=center>正火和回火<BR>或淬火和回火</DIV></TD>
<TD>
<DIV align=center>760</DIV></TD>
<TD>
<DIV align=center>550</DIV></TD>
<TD>
<DIV align=center>15</DIV></TD>
<TD>
<DIV align=center>35</DIV></TD>
<TD>
<DIV align=center>27</DIV></TD>
<TD>
<DIV align=center>20</DIV></TD></TR></TBODY></TABLE>
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