英国标准室温和高温用承压铸钢的高温屈服强度
<TABLE width=748 border=1><TBODY>
<TR>
<TD rowSpan=2>
<DIV align=center>钢 号</DIV></TD>
<TD rowSpan=2>数字<BR>牌号</TD>
<TD rowSpan=2>热处理<BR>代号<SUP>①</SUP></TD>
<TD rowSpan=2>铸件厚度<BR>≤/mm</TD>
<TD colSpan=6 height=25>下列温度的高温屈服强度σ<SUB>0.2</SUB>/MPa</TD></TR>
<TR>
<TD>100℃</TD>
<TD>200℃</TD>
<TD>300℃</TD>
<TD>400℃</TD>
<TD>500℃</TD>
<TD>550℃</TD></TR>
<TR>
<TD>GP240GR</TD>
<TD>1.0621</TD>
<TD>+N</TD>
<TD>100</TD>
<TD>—</TD>
<TD>—</TD>
<TD>—</TD>
<TD>—</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD rowSpan=2>GP240GH</TD>
<TD rowSpan=2>1.0619</TD>
<TD>+N</TD>
<TD>100</TD>
<TD>210</TD>
<TD>175</TD>
<TD>145</TD>
<TD>130</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>+QT</TD>
<TD>100</TD>
<TD>210</TD>
<TD>175</TD>
<TD>145</TD>
<TD>130</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD rowSpan=2>GP280GH</TD>
<TD rowSpan=2>1.0625</TD>
<TD>+N</TD>
<TD>100</TD>
<TD>250</TD>
<TD>220</TD>
<TD>190</TD>
<TD>160</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>+QT</TD>
<TD>100</TD>
<TD>250</TD>
<TD>220</TD>
<TD>190</TD>
<TD>160</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>G20Mo5</TD>
<TD>1.5419</TD>
<TD>+QT</TD>
<TD>100</TD>
<TD>
<DIV align=left>—</DIV></TD>
<TD>190</TD>
<TD>165</TD>
<TD>150</TD>
<TD>135</TD>
<TD>—</TD></TR>
<TR>
<TD>G17CrMo5-5</TD>
<TD>1.7357</TD>
<TD>+QT</TD>
<TD>100</TD>
<TD>
<DIV align=left>—</DIV></TD>
<TD>355</TD>
<TD>230</TD>
<TD>200</TD>
<TD>175</TD>
<TD>160</TD></TR>
<TR>
<TD>G17CrMo9-10</TD>
<TD>1.7379</TD>
<TD>+QT</TD>
<TD>150</TD>
<TD>—</TD>
<TD>244</TD>
<TD>345</TD>
<TD>315</TD>
<TD>280</TD>
<TD>240</TD></TR>
<TR>
<TD>G12CrMoV5-2</TD>
<TD>1.7720</TD>
<TD>+QT</TD>
<TD>100</TD>
<TD>264</TD>
<TD>385</TD>
<TD>230</TD>
<TD>214</TD>
<TD>194</TD>
<TD>144</TD></TR>
<TR>
<TD>G17CrMoV5-10</TD>
<TD>1.7706</TD>
<TD>+QT</TD>
<TD>150</TD>
<TD>
<DIV align=left>—</DIV></TD>
<TD>385</TD>
<TD>365</TD>
<TD>335</TD>
<TD>300</TD>
<TD>260</TD></TR>
<TR>
<TD>GX15CrMo5</TD>
<TD>1.7365</TD>
<TD>+QT</TD>
<TD>150</TD>
<TD>
<DIV align=left>—</DIV></TD>
<TD>390</TD>
<TD>380</TD>
<TD>370</TD>
<TD>305</TD>
<TD>250</TD></TR>
<TR>
<TD rowSpan=2>GX8CrNi12</TD>
<TD rowSpan=2>1.4107</TD>
<TD>+QT1</TD>
<TD>300</TD>
<TD>—</TD>
<TD>275</TD>
<TD>265</TD>
<TD>255</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>+QT2</TD>
<TD>300</TD>
<TD>—</TD>
<TD>410</TD>
<TD>390</TD>
<TD>370</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>GX4CrN13-4</TD>
<TD>1.4317</TD>
<TD>+QT</TD>
<TD>300</TD>
<TD>515</TD>
<TD>485</TD>
<TD>455</TD>
<TD>—</TD>
<TD>340</TD>
<TD>290</TD></TR>
<TR>
<TD>GX23CrMoV12-1</TD>
<TD>1.4931</TD>
<TD>+QT</TD>
<TD>150</TD>
<TD>—</TD>
<TD>450</TD>
<TD>430</TD>
<TD>390</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>GX4CrNiMo16-5-1</TD>
<TD>1.4405</TD>
<TD>+QT</TD>
<TD>300</TD>
<TD>515</TD>
<TD>485</TD>
<TD>455</TD>
<TD>—</TD>
<TD>—</TD>
<TD>—</TD></TR></TBODY></TABLE>
<P> ① 热处理代号：N—正火；Q—淬火，T—回火。热处理温度同表5-140。</P>
<P> （2）英国BS标准低温用承压铸钢</P>
<P> a.低温用承压铸钢的钢号与化学成分，见表5-142</P>
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