球墨铸铁附铸试块V形缺口试样的冲击强度
<TABLE cellSpacing=0 cellPadding=0 border=1><TBODY>
<TR>
<TD width="16%" rowSpan=2>
<DIV align=center>牌号</DIV></TD>
<TD width="12%" rowSpan=2>
<DIV align=center>铸件壁厚</DIV>
<DIV align=center>/mm</DIV></TD>
<TD width="34%" colSpan=2>
<DIV align=center>室温冲击韧度(23±5℃)</DIV>
<DIV align=center>α<SUB>K</SUB>≥/(J/cm<SUP>2</SUP>)</DIV></TD>
<TD width="36%" colSpan=2>
<DIV align=center>低温冲击韧度(-20±2℃)</DIV>
<DIV align=center>α<SUB>K</SUB>≥/(J/cm<SUP>2</SUP>)</DIV></TD></TR>
<TR>
<TD width="18%">
<DIV align=center>3试样平均值</DIV></TD>
<TD width="16%">
<DIV align=center>单个试样值</DIV></TD>
<TD width="20%">
<DIV align=center>3试样平均值</DIV></TD>
<TD width="15%">
<DIV align=center>单个试样值</DIV></TD></TR>
<TR>
<TD width="16%">
<DIV align=center>QT400-18A</DIV></TD>
<TD width="12%">
<DIV align=center>>30~60</DIV>
<DIV align=center>>60~200</DIV></TD>
<TD width="18%">
<DIV align=center>14</DIV>
<DIV align=center>12</DIV></TD>
<TD width="16%">
<DIV align=center>11</DIV>
<DIV align=center>9</DIV></TD>
<TD width="20%">
<DIV align=center>-</DIV>
<DIV align=center>-</DIV></TD>
<TD width="15%">
<DIV align=center>-</DIV>
<DIV align=center>-</DIV></TD></TR>
<TR>
<TD width="16%">
<DIV align=center>QT400-18AL</DIV></TD>
<TD width="12%">
<DIV align=center>>30~60</DIV>
<DIV align=center>>60~120</DIV></TD>
<TD width="18%">
<DIV align=center>-</DIV>
<DIV align=center>-</DIV></TD>
<TD width="16%">
<DIV align=center>-</DIV>
<DIV align=center>-</DIV></TD>
<TD width="20%">
<DIV align=center>12</DIV>
<DIV align=center>10</DIV></TD>
<TD width="15%">
<DIV align=center>9</DIV>
<DIV align=center>7</DIV></TD></TR></TBODY></TABLE>
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