灰铸铁的硬度与抗拉强度间的关系
<TABLE cellSpacing=0 cellPadding=0 border=1><TBODY>
<TR>
<TD width="22%" rowSpan=3>
<P align=center><STRONG>抗拉强度</STRONG></P>
<P align=center><STRONG><STRONG style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">σ</SPAN><SUB><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">b</SPAN></SUB></STRONG>/ MPa</STRONG></P></TD>
<TD width="77%" colSpan=5>
<P align=center><STRONG>RH</STRONG></P></TD></TR>
<TR>
<TD width="15%">
<P align=center>0.8</P></TD>
<TD width="15%">
<P align=center>0.9</P></TD>
<TD width="15%">
<P align=center>1.0</P></TD>
<TD width="15%">
<P align=center>1.1</P></TD>
<TD width="15%">
<P align=center>1.2</P></TD></TR>
<TR>
<TD width="77%" colSpan=5>
<P align=center>HBS</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>80</P></TD>
<TD width="15%">
<P align=center>82</P></TD>
<TD width="15%">
<P align=center>92</P></TD>
<TD width="15%">
<P align=center>102</P></TD>
<TD width="15%">
<P align=center>112</P></TD>
<TD width="15%">
<P align=center>122</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>100</P></TD>
<TD width="15%">
<P align=center>93</P></TD>
<TD width="15%">
<P align=center>105</P></TD>
<TD width="15%">
<P align=center>116</P></TD>
<TD width="15%">
<P align=center>128</P></TD>
<TD width="15%">
<P align=center>140</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>120</P></TD>
<TD width="15%">
<P align=center>105</P></TD>
<TD width="15%">
<P align=center>118</P></TD>
<TD width="15%">
<P align=center>131</P></TD>
<TD width="15%">
<P align=center>144</P></TD>
<TD width="15%">
<P align=center>157</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>140</P></TD>
<TD width="15%">
<P align=center>116</P></TD>
<TD width="15%">
<P align=center>131</P></TD>
<TD width="15%">
<P align=center>145</P></TD>
<TD width="15%">
<P align=center>160</P></TD>
<TD width="15%">
<P align=center>174</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>160</P></TD>
<TD width="15%">
<P align=center>129</P></TD>
<TD width="15%">
<P align=center>144</P></TD>
<TD width="15%">
<P align=center>160</P></TD>
<TD width="15%">
<P align=center>176</P></TD>
<TD width="15%">
<P align=center>192</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>180</P></TD>
<TD width="15%">
<P align=center>139</P></TD>
<TD width="15%">
<P align=center>157</P></TD>
<TD width="15%">
<P align=center>174</P></TD>
<TD width="15%">
<P align=center>192</P></TD>
<TD width="15%">
<P align=center>209</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>200</P></TD>
<TD width="15%">
<P align=center>150</P></TD>
<TD width="15%">
<P align=center>169</P></TD>
<TD width="15%">
<P align=center>188</P></TD>
<TD width="15%">
<P align=center>206</P></TD>
<TD width="15%">
<P align=center>225</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>220</P></TD>
<TD width="15%">
<P align=center>157</P></TD>
<TD width="15%">
<P align=center>177</P></TD>
<TD width="15%">
<P align=center>196</P></TD>
<TD width="15%">
<P align=center>216</P></TD>
<TD width="15%">
<P align=center>236</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>240</P></TD>
<TD width="15%">
<P align=center>164</P></TD>
<TD width="15%">
<P align=center>185</P></TD>
<TD width="15%">
<P align=center>205</P></TD>
<TD width="15%">
<P align=center>226</P></TD>
<TD width="15%">
<P align=center>247</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>260</P></TD>
<TD width="15%">
<P align=center>171</P></TD>
<TD width="15%">
<P align=center>192</P></TD>
<TD width="15%">
<P align=center>214</P></TD>
<TD width="15%">
<P align=center>235</P></TD>
<TD width="15%">
<P align=center>257</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>280</P></TD>
<TD width="15%">
<P align=center>178</P></TD>
<TD width="15%">
<P align=center>200</P></TD>
<TD width="15%">
<P align=center>223</P></TD>
<TD width="15%">
<P align=center>245</P></TD>
<TD width="15%">
<P align=center>267</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>300</P></TD>
<TD width="15%">
<P align=center>185</P></TD>
<TD width="15%">
<P align=center>208</P></TD>
<TD width="15%">
<P align=center>231</P></TD>
<TD width="15%">
<P align=center>255</P></TD>
<TD width="15%">
<P align=center>278</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>320</P></TD>
<TD width="15%">
<P align=center>192</P></TD>
<TD width="15%">
<P align=center>216</P></TD>
<TD width="15%">
<P align=center>240</P></TD>
<TD width="15%">
<P align=center>264</P></TD>
<TD width="15%">
<P align=center>288</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>340</P></TD>
<TD width="15%">
<P align=center>199</P></TD>
<TD width="15%">
<P align=center>224</P></TD>
<TD width="15%">
<P align=center>249</P></TD>
<TD width="15%">
<P align=center>274</P></TD>
<TD width="15%">
<P align=center>298</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>360</P></TD>
<TD width="15%">
<P align=center>205</P></TD>
<TD width="15%">
<P align=center>232</P></TD>
<TD width="15%">
<P align=center>258</P></TD>
<TD width="15%">
<P align=center>283</P></TD>
<TD width="15%">
<P align=center>309</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>380</P></TD>
<TD width="15%">
<P align=center>213</P></TD>
<TD width="15%">
<P align=center>240</P></TD>
<TD width="15%">
<P align=center>266</P></TD>
<TD width="15%">
<P align=center>293</P></TD>
<TD width="15%">
<P align=center>320</P></TD></TR>
<TR>
<TD width="22%">
<P align=center>400</P></TD>
<TD width="15%">
<P align=center>220</P></TD>
<TD width="15%">
<P align=center>248</P></TD>
<TD width="15%">
<P align=center>275</P></TD>
<TD width="15%">
<P align=center>303</P></TD>
<TD width="15%">
<P align=center>330</P></TD></TR></TBODY></TABLE>
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