美国标准承压铸钢的力学性能
<TABLE width=748 border=1><TBODY>
<TR>
<TD rowSpan=2>
<DIV align=center>等 级</DIV></TD>
<TD rowSpan=2>
<DIV align=center>型 号</DIV></TD>
<TD colSpan=4>
<DIV align=center>力学性能</DIV></TD>
<TD rowSpan=2>
<DIV align=center>硬度<BR>HBS</DIV></TD></TR>
<TR>
<TD noWrap>
<P align=center>σ<SUB>b</SUB>/MPa</P></TD>
<TD noWrap>
<P align=center>σ<SUB>0.2</SUB>/MPa</P></TD>
<TD noWrap>
<P align=center>δ<BR>(%) </P></TD>
<TD>
<P align=center>φ(%) </P></TD></TR>
<TR>
<TD>Grade1</TD>
<TD>
<P>Class A<BR> B<BR> C </P></TD>
<TD>585～760<BR>620～795<BR>≥620 </TD>
<TD>380<BR>450<BR>450</TD>
<TD>22<BR>22<BR>22</TD>
<TD>40<BR>45<BR>45</TD>
<TD>—<BR>—<BR>22</TD></TR>
<TR>
<TD>Grade2</TD>
<TD>Class A<BR> B<BR> C</TD>
<TD>585～760<BR>620～795<BR>≥620 </TD>
<TD>365<BR>450<BR>450</TD>
<TD>22<BR>22<BR>22</TD>
<TD>35<BR>40<BR>40</TD>
<TD>—<BR>—<BR>22</TD></TR>
<TR>
<TD>Grade4</TD>
<TD>Class A<BR> B<BR> C<BR> D<BR> E</TD>
<TD>620～795<BR>725～895<BR>≥620<BR>≥690<BR>≥795 </TD>
<TD>415<BR>585<BR>415<BR>515<BR>655</TD>
<TD>18<BR>17<BR>18<BR>17<BR>15</TD>
<TD>
<P>40<BR>35<BR>35<BR>35<BR>35 </P></TD>
<TD>
<P>—<BR>—<BR>22<BR>22 <BR>—<BR></P></TD></TR>
<TR>
<TD>Grade6</TD>
<TD>Class A<BR> B<BR></TD>
<TD>≥795<BR>≥825</TD>
<TD>550<BR>650</TD>
<TD>18<BR>12</TD>
<TD>30<BR>25</TD>
<TD>—<BR>—</TD></TR>
<TR>
<TD>Grade7</TD>
<TD>Class A</TD>
<TD>≥795</TD>
<TD>690</TD>
<TD>15</TD>
<TD>30</TD>
<TD>—</TD></TR>
<TR>
<TD>Grade8</TD>
<TD>Class A<BR> B<BR> C </TD>
<TD>585～760<BR>≥725<BR>≥690</TD>
<TD>380<BR>585<BR>515</TD>
<TD>20<BR>17<BR>17</TD>
<TD>35<BR>30<BR>35</TD>
<TD>—<BR>—<BR>22</TD></TR>
<TR>
<TD>Grade9</TD>
<TD>Class A<BR> B<BR> C<BR> D<BR> E</TD>
<TD>≥620<BR>≥725<BR>≥620<BR>≥690<BR>≥795</TD>
<TD>415<BR>585<BR>415<BR>515<BR>655</TD>
<TD>18<BR>16<BR>18<BR>17<BR>15</TD>
<TD>35<BR>35<BR>35<BR>35<BR>35</TD>
<TD>—<BR>—<BR>—<BR>22<BR>—</TD></TR>
<TR>
<TD>Grade10</TD>
<TD>Class A<BR> B</TD>
<TD>≥690<BR>≥860<BR></TD>
<TD>485<BR>690</TD>
<TD>15<BR>15</TD>
<TD>35<BR>35</TD>
<TD>—<BR>—</TD></TR>
<TR>
<TD>Grade11</TD>
<TD>Class A<BR> B</TD>
<TD>485～655<BR>725～895</TD>
<TD>275<BR>585</TD>
<TD>20<BR>17</TD>
<TD>35<BR>35</TD>
<TD>—<BR>—</TD></TR>
<TR>
<TD>Grade12</TD>
<TD>Class A<BR> B</TD>
<TD>485～655<BR>725～895</TD>
<TD>275<BR>585</TD>
<TD>20<BR>17</TD>
<TD>35<BR>35</TD>
<TD>—<BR>—</TD></TR>
<TR>
<TD>Grade13</TD>
<TD>Class A<BR> B</TD>
<TD>620～795<BR>725～895</TD>
<TD>415<BR>585</TD>
<TD>18<BR>17</TD>
<TD>35<BR>35</TD>
<TD>—<BR>—</TD></TR>
<TR>
<TD>Grade14</TD>
<TD>Class A</TD>
<TD>825～1000</TD>
<TD>655</TD>
<TD>14</TD>
<TD>30</TD>
<TD>—</TD></TR>
<TR>
<TD>Grade16</TD>
<TD>Class A</TD>
<TD>485～655</TD>
<TD>275</TD>
<TD>22</TD>
<TD>35</TD>
<TD>—</TD></TR>
<TR>
<TD>CA15</TD>
<TD>Class A<BR> B<BR> C<BR> D</TD>
<TD>965～1170<BR>620～795<BR>≥620<BR>≥620</TD>
<TD>760～895<BR>450<BR>415<BR>515</TD>
<TD>10<BR>18<BR>18<BR>17</TD>
<TD>25<BR>30<BR>35<BR>35</TD>
<TD>—<BR>—<BR>22<BR>22</TD></TR>
<TR>
<TD>CA15M</TD>
<TD>Class A</TD>
<TD>620～795<BR></TD>
<TD>450</TD>
<TD>18</TD>
<TD>30<BR></TD>
<TD>—</TD></TR>
<TR>
<TD>CA6NM</TD>
<TD>Class A<BR> B</TD>
<TD>760～930<BR>≥690</TD>
<TD>515<BR>520</TD>
<TD>15<BR>17</TD>
<TD>35<BR>35</TD>
<TD>—<BR>23</TD></TR></TBODY></TABLE>
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