灰铸铁的牌号、力学性能及用途
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<P align=center>铸铁类别 </P></TD>
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<P align=center>牌号</P></TD>
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<P align=center>铸件壁厚/mm </P></TD>
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<P align=center>力学性能 </P></TD>
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<P align=center>应用 </P></TD></TR>
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<P align=center><STRONG>σ<SUB><SPAN lang=EN-US style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: Arial">b</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; mso-bidi-font-size: 12.0pt"> </SPAN>/MPa ≥ </STRONG></P></TD>
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<P align=center><STRONG>HBS </STRONG></P></TD></TR>
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<P align=center>铁素体 </P>
<P align=center>灰铸铁 </P></TD>
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<P align=center>HT100 </P></TD>
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<P align=center>2.5~10 </P></TD>
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<P align=center>130 </P></TD>
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<P align=center>10~166 </P></TD>
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<P align=left>适用于载荷小、对摩擦和磨损无特殊要求的不重要铸件,如防护罩、盖、油盘、手轮、支架、底板、重锤、小手柄等 </P></TD></TR>
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<P align=center>10~20 </P></TD>
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<P align=center>100 </P></TD>
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<P align=center>93~140 </P></TD></TR>
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<P align=center>20~30 </P></TD>
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<P align=center>90 </P></TD>
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<P align=center>87~131 </P></TD></TR>
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<P align=center>30~50 </P></TD>
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<P align=center>80 </P></TD>
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<P align=center>82~122 </P></TD></TR>
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<P align=center>铁素体—珠光体 </P>
<P align=center>灰铸铁 </P></TD>
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<P align=center>HT150 </P></TD>
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<P align=center>2.5~10 </P></TD>
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<P align=center>175 </P></TD>
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<P align=center>137~205 </P></TD>
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<P align=left>承受中等载荷的铸件,如机座、支架、箱体、刀架、床身、轴承座、工作台、带轮、端盖、泵体、阀体、管路、飞轮、电机座等 </P></TD></TR>
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<P align=center>10~20 </P></TD>
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<P align=center>145 </P></TD>
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<P align=center>119~179 </P></TD></TR>
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<P align=center>20~30 </P></TD>
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<P align=center>130 </P></TD>
<TD width=87>
<P align=center>110~166 </P></TD></TR>
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<P align=center>30~50 </P></TD>
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<P align=center>120 </P></TD>
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<P align=center>105~157 </P></TD></TR>
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<P align=center>珠光体 </P>
<P align=center>灰铸铁 </P></TD>
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<P align=center>HT200 </P></TD>
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<P align=center>2.5~10 </P></TD>
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<P align=center>220 </P></TD>
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<P align=center>157~236 </P></TD>
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<P align=left>承受较大载荷和要求一定的气密性或耐蚀性等较重要铸件,如汽缸、齿轮、机座、飞轮、床身、气缸体、气缸套、活塞、齿轮箱、刹车轮、联轴器盘、中等压力阀体等 </P></TD></TR>
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<P align=center>10~20 </P></TD>
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<P align=center>195 </P></TD>
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<P align=center>148~222 </P></TD></TR>
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<P align=center>20~30 </P></TD>
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<P align=center>170 </P></TD>
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<P align=center>134~200 </P></TD></TR>
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<P align=center>30~50 </P></TD>
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<P align=center>160 </P></TD>
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<P align=center>129~192 </P></TD></TR>
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<P align=center>HT250 </P></TD>
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<P align=center>4.0~10 </P></TD>
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<P align=center>270 </P></TD>
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<P align=center>175~262 </P></TD></TR>
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<P align=center>10~20 </P></TD>
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<P align=center>240 </P></TD>
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<P align=center>164~247 </P></TD></TR>
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<TD width=67>
<P align=center>20~30 </P></TD>
<TD width=54>
<P align=center>220 </P></TD>
<TD width=87>
<P align=center>157~236 </P></TD></TR>
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<TD width=67>
<P align=center>30~50 </P></TD>
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<P align=center>200 </P></TD>
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<P align=center>150~225 </P></TD></TR>
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<P align=center>孕育铸铁 </P></TD>
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<P align=center>HT300 </P></TD>
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<P align=center>10~20 </P></TD>
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<P align=center>290 </P></TD>
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<P align=center>182~272 </P></TD>
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<P align=left>承受高载荷、耐磨和高气密性重要铸件,如重型机床、剪床、压力机、自动车床的床身、机座、机架,高压液压件,活塞环,受力较大的齿轮、凸轮、衬套,大型发动机的曲轴、气缸体、缸套、气缸盖等 </P></TD></TR>
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<P align=center>20~30 </P></TD>
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<P align=center>250 </P></TD>
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<P align=center>168~251</P></TD></TR>
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<P align=center>30~50 </P></TD>
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<P align=center>230 </P></TD>
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<P align=center>161~241</P></TD></TR>
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<P align=center>HT350 </P></TD>
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<P align=center>10~20 </P></TD>
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<P align=center>340 </P></TD>
<TD width=87>
<P align=center>199~298 </P></TD></TR>
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<TD width=67>
<P align=center>20~30 </P></TD>
<TD width=54>
<P align=center>290 </P></TD>
<TD width=87>
<P align=center>182~272 </P></TD></TR>
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<P align=center>30~50 </P></TD>
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<P align=center>260 </P></TD>
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<P align=center>171~257 </P></TD></TR></TBODY></TABLE>
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