奥氏体化温度对灰铸铁淬火后（油淬）硬度的影响
<TABLE cellSpacing=0 cellPadding=0 border=1><TBODY>
<TR>
<TD width=81 rowSpan=2>
<P align=center><STRONG>灰铸铁</STRONG></P></TD>
<TD width=82 rowSpan=2>
<P align=center><STRONG>铸态</STRONG></P></TD>
<TD width=337 colSpan=4>
<P align=center><STRONG>HBS</STRONG></P></TD></TR>
<TR>
<TD width=84>
<P align=center>790℃</P></TD>
<TD width=84>
<P align=center>815℃</P></TD>
<TD width=84>
<P align=center>845℃</P></TD>
<TD width=84>
<P align=center>870℃</P></TD></TR>
<TR>
<TD width=81>
<P align=center>A</P></TD>
<TD width=82>
<P align=center>217</P></TD>
<TD width=84>
<P align=center>159</P></TD>
<TD width=84>
<P align=center>269</P></TD>
<TD width=84>
<P align=center>444</P></TD>
<TD width=84>
<P align=center>477</P></TD></TR>
<TR>
<TD width=81>
<P align=center>B</P></TD>
<TD width=82>
<P align=center>255</P></TD>
<TD width=84>
<P align=center>207</P></TD>
<TD width=84>
<P align=center>444</P></TD>
<TD width=84>
<P align=center>514</P></TD>
<TD width=84>
<P align=center>601</P></TD></TR>
<TR>
<TD width=81>
<P align=center>C</P></TD>
<TD width=82>
<P align=center>223</P></TD>
<TD width=84>
<P align=center>311</P></TD>
<TD width=84>
<P align=center>477</P></TD>
<TD width=84>
<P align=center>485</P></TD>
<TD width=84>
<P align=center>529</P></TD></TR>
<TR>
<TD width=81>
<P align=center>D</P></TD>
<TD width=82>
<P align=center>241</P></TD>
<TD width=84>
<P align=center>355</P></TD>
<TD width=84>
<P align=center>469</P></TD>
<TD width=84>
<P align=center>485</P></TD>
<TD width=84>
<P align=center>460</P></TD></TR>
<TR>
<TD width=81>
<P align=center>E</P></TD>
<TD width=82>
<P align=center>235</P></TD>
<TD width=84>
<P align=center>208</P></TD>
<TD width=84>
<P align=center>487</P></TD>
<TD width=84>
<P align=center>520</P></TD>
<TD width=84>
<P align=center>512</P></TD></TR>
<TR>
<TD width=81>
<P align=center>F</P></TD>
<TD width=82>
<P align=center>235</P></TD>
<TD width=84>
<P align=center>270</P></TD>
<TD width=84>
<P align=center>477</P></TD>
<TD width=84>
<P align=center>480</P></TD>
<TD width=84>
<P align=center>465</P></TD></TR></TBODY></TABLE>
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