美国标准抗磨白口铸铁的力学性能
<TABLE cellSpacing=0 cellPadding=0 width="100%" align=center border=1><TBODY>
<TR>
<TD width="5%" rowSpan=4>
<DIV>级</DIV>
<DIV>别</DIV></TD>
<TD width="5%" rowSpan=4>
<DIV>种</DIV>
<DIV>类</DIV></TD>
<TD width="18%" rowSpan=4>
<DIV> 名称</DIV></TD>
<TD width="54%" colSpan=5>
<DIV>布 氏 硬 度</DIV></TD>
<TD width="16%" rowSpan=4>
<DIV> 典型截面厚度</DIV>
<DIV>≤/mm</DIV></TD></TR>
<TR>
<TD width="33%" colSpan=3>
<DIV>砂型铸造</DIV></TD>
<TD width="10%" rowSpan=3>
<DIV>冷硬铸造≥HBW</DIV></TD>
<TD width="10%" rowSpan=3>
<DIV> </DIV>
<DIV>退火</DIV>
<DIV>≤HBS</DIV></TD></TR>
<TR>
<TD width="12%" rowSpan=2>
<DIV>铸态</DIV>
<DIV>≥HBW</DIV></TD>
<TD width="21%" colSpan=2>
<DIV>淬火≥HBW</DIV></TD></TR>
<TR>
<TD width="10%">
<DIV>水平1</DIV></TD>
<TD width="10%">
<DIV>水平2</DIV></TD></TR>
<TR>
<TD width="5%">
<DIV>I</DIV></TD>
<TD width="5%">
<DIV>A</DIV>
<DIV>B</DIV>
<DIV>C</DIV>
<DIV>D</DIV></TD>
<TD width="18%">
<DIV>Ni-Cr-Hc</DIV>
<DIV>Ni-Cr-Lc</DIV>
<DIV>Ni-Cr-GB</DIV>
<DIV>Ni-HiCr</DIV></TD>
<TD width="12%">
<DIV align=center>550</DIV>
<DIV align=center>550</DIV>
<DIV align=center>550</DIV>
<DIV align=center>500</DIV></TD>
<TD width="10%">
<DIV align=center>600</DIV>
<DIV align=center>600</DIV>
<DIV align=center>600</DIV>
<DIV align=center>600</DIV></TD>
<TD width="10%">
<DIV align=center>650</DIV>
<DIV align=center>650</DIV>
<DIV align=center>650</DIV>
<DIV align=center>650</DIV></TD>
<TD width="10%">
<DIV align=center>600</DIV>
<DIV align=center>600</DIV>
<DIV align=center>600</DIV>
<DIV align=center>550</DIV></TD>
<TD width="10%">
<DIV align=center>—</DIV>
<DIV align=center>—</DIV>
<DIV align=center>400</DIV>
<DIV align=center>—</DIV></TD>
<TD width="16%">
<DIV align=center>200</DIV>
<DIV align=center>200</DIV>
<DIV align=center>75（球直径）</DIV>
<DIV align=center>300</DIV></TD></TR>
<TR>
<TD width="5%">
<DIV>II</DIV></TD>
<TD width="5%">
<DIV>A</DIV>
<DIV>B</DIV>
<DIV>C</DIV>
<DIV>D</DIV>
<DIV>E</DIV></TD>
<TD width="18%">
<DIV>12%Cr</DIV>
<DIV>15%Cr-Mo</DIV>
<DIV>15%Cr-Mo-Hc</DIV>
<DIV>20%Cr-Mo</DIV>
<DIV>20%Cr-Mo-Hc</DIV></TD>
<TD width="12%">
<DIV align=center>550</DIV>
<DIV align=center>450</DIV>
<DIV align=center>550</DIV>
<DIV align=center>450</DIV>
<DIV align=center>550</DIV></TD>
<TD width="10%">
<DIV align=center>600</DIV>
<DIV align=center>600</DIV>
<DIV align=center>600</DIV>
<DIV align=center>600</DIV>
<DIV align=center>600</DIV></TD>
<TD width="10%">
<DIV align=center>650</DIV>
<DIV align=center>650</DIV>
<DIV align=center>—</DIV>
<DIV align=center>650</DIV>
<DIV align=center>—</DIV></TD>
<TD width="10%">
<DIV align=center>550</DIV>
<DIV align=center>—</DIV>
<DIV align=center>—</DIV>
<DIV align=center>—</DIV>
<DIV align=center>—</DIV></TD>
<TD width="10%">
<DIV align=center>400</DIV>
<DIV align=center>400</DIV>
<DIV align=center>400</DIV>
<DIV align=center>400</DIV>
<DIV align=center>400</DIV></TD>
<TD width="16%">
<DIV align=center>25（球直径）</DIV>
<DIV align=center>100</DIV>
<DIV align=center>75</DIV>
<DIV align=center>200</DIV>
<DIV align=center>300</DIV></TD></TR>
<TR>
<TD width="5%">
<DIV>III</DIV></TD>
<TD width="5%">
<DIV>A</DIV></TD>
<TD width="18%">
<DIV>25%Cr</DIV></TD>
<TD width="12%">
<DIV align=center>450</DIV></TD>
<TD width="10%">
<DIV align=center>600</DIV></TD>
<TD width="10%">
<DIV align=center>650</DIV></TD>
<TD width="10%">
<DIV align=center>—</DIV></TD>
<TD width="10%">
<DIV align=center>400</DIV></TD>
<TD width="16%">
<DIV align=center>200</DIV></TD></TR></TBODY></TABLE>
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