英国标准室温和高温用承压铸钢的热处理与室温力学性能
<TABLE width=748 border=1><TBODY>
<TR>
<TD width="12%" rowSpan=2>钢号</TD>
<TD width="10%" rowSpan=2>数字<BR>牌号</TD>
<TD colSpan=3 height=17>
<DIV align=center>热处理</DIV></TD>
<TD width="6%" rowSpan=2>铸件<BR>厚度<BR>≤/mm <BR></TD>
<TD colSpan=4>
<DIV align=center>室温力学性能</DIV></TD></TR>
<TR>
<TD width="6%" height=36>代号<SUP>①</SUP></TD>
<TD width="11%">
<P>正火或淬火<BR>温度/℃</P></TD>
<TD width="10%">回火温度<BR>/℃</TD>
<TD noWrap width="9%">
<P align=center>σ<SUB>b</SUB>/MPa</P></TD>
<TD noWrap width="15%">
<P align=center>σ<SUB>s</SUB><SUP>②</SUP>≥ <BR>/MPa</P></TD>
<TD noWrap width="9%">
<P align=center>δ<BR>≥(%) </P></TD>
<TD width="12%"><EM>A </EM><SUB>KV</SUB> <BR>≥/J</TD></TR>
<TR>
<TD>GP240GR</TD>
<TD>1.0621</TD>
<TD>+N</TD>
<TD>900～980</TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>100</TD>
<TD>420～600</TD>
<TD>240</TD>
<TD>22</TD>
<TD>27</TD></TR>
<TR>
<TD rowSpan=2>GP240GH</TD>
<TD rowSpan=2>1.0619</TD>
<TD>+N</TD>
<TD>900～980</TD>
<TD>
<DIV align=center>—</DIV></TD>
<TD>100</TD>
<TD>420～600</TD>
<TD>240</TD>
<TD>22</TD>
<TD>27</TD></TR>
<TR>
<TD>+QT</TD>
<TD>890～980</TD>
<TD>600～700</TD>
<TD>100</TD>
<TD>420～600</TD>
<TD>240</TD>
<TD>22</TD>
<TD>40</TD></TR>
<TR>
<TD rowSpan=2>GP280GH</TD>
<TD rowSpan=2>1.0625</TD>
<TD>+N</TD>
<TD>900～980</TD>
<TD>—</TD>
<TD>100</TD>
<TD>480～640</TD>
<TD>280</TD>
<TD>22</TD>
<TD>27</TD></TR>
<TR>
<TD>+QT</TD>
<TD>890～980</TD>
<TD>600～700</TD>
<TD>100</TD>
<TD>480～640</TD>
<TD>280</TD>
<TD>22</TD>
<TD>35</TD></TR>
<TR>
<TD>G20Mo5</TD>
<TD>1.5419</TD>
<TD>+QT</TD>
<TD>920～980</TD>
<TD>650～730</TD>
<TD>100</TD>
<TD>440～590</TD>
<TD>245</TD>
<TD>22</TD>
<TD>27</TD></TR>
<TR>
<TD>G17CrMo5-5</TD>
<TD>1.7357</TD>
<TD>+QT</TD>
<TD>920～960</TD>
<TD>680～730</TD>
<TD>100</TD>
<TD>490～690</TD>
<TD>315</TD>
<TD>20</TD>
<TD>27</TD></TR>
<TR>
<TD>G17CrMo9-10</TD>
<TD>1.7379</TD>
<TD>+QT</TD>
<TD>930～970</TD>
<TD>680～740</TD>
<TD>150</TD>
<TD>490～740</TD>
<TD>400</TD>
<TD>18</TD>
<TD>40</TD></TR>
<TR>
<TD>G12CrMoV5-2</TD>
<TD>1.7720</TD>
<TD>+QT</TD>
<TD>950～1000</TD>
<TD>680～720</TD>
<TD>100</TD>
<TD>510～660</TD>
<TD>195</TD>
<TD>17</TD>
<TD>27</TD></TR>
<TR>
<TD>G17CrMoV5-10</TD>
<TD>1.7706</TD>
<TD>+QT</TD>
<TD>920～960</TD>
<TD>680～740</TD>
<TD>150</TD>
<TD>590～780</TD>
<TD>440</TD>
<TD>15</TD>
<TD>27</TD></TR>
<TR>
<TD>GX15CrMo5</TD>
<TD>1.7365</TD>
<TD>+QT</TD>
<TD>930～990</TD>
<TD>680～730</TD>
<TD>150</TD>
<TD>630～760</TD>
<TD>420</TD>
<TD>16</TD>
<TD>27</TD></TR>
<TR>
<TD rowSpan=2>GX8CrNi12</TD>
<TD rowSpan=2>1.4107</TD>
<TD>+QT1</TD>
<TD>1000～1060</TD>
<TD>680～730</TD>
<TD>300</TD>
<TD>540～690</TD>
<TD>355</TD>
<TD>18</TD>
<TD>45</TD></TR>
<TR>
<TD>+QT2</TD>
<TD>1000～1060</TD>
<TD>600～680</TD>
<TD>300</TD>
<TD>600～800</TD>
<TD>500</TD>
<TD>16</TD>
<TD>40</TD></TR>
<TR>
<TD>GX4CrN13-4</TD>
<TD>1.4317</TD>
<TD>+QT</TD>
<TD>1000～1050</TD>
<TD>590～630</TD>
<TD>300</TD>
<TD>760～960</TD>
<TD>550</TD>
<TD>15</TD>
<TD>50</TD></TR>
<TR>
<TD>GX23CrMoV12-1</TD>
<TD>1.4931</TD>
<TD>+QT</TD>
<TD>1030～1080</TD>
<TD>700～750</TD>
<TD>150</TD>
<TD>740～880</TD>
<TD>540</TD>
<TD>15</TD>
<TD>27</TD></TR>
<TR>
<TD>GX4CrNiMo16-5-1</TD>
<TD>1.4405</TD>
<TD>+QT</TD>
<TD>1020～1070</TD>
<TD>580～630</TD>
<TD>300</TD>
<TD>760～960</TD>
<TD>540</TD>
<TD>15</TD>
<TD>60</TD></TR></TBODY></TABLE>
<P> ① 热处理代号：N—正火；Q—淬火，冷却介质：液体或空冷；T—回火。</P>
<P> ② 屈服点或屈服强度</P>
<P> c.室温和高温用承压铸钢的高温屈服强度，见表5-141。</P>
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