英国标准奥氏体型和奥氏体-铁素体型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<SUP>①</SUP></TD></TR>
<TR>
<TD>100℃</TD>
<TD>200℃</TD>
<TD>300℃</TD>
<TD>400℃</TD>
<TD>500℃</TD>
<TD>550℃</TD></TR>
<TR>
<TD>GX2CrNi19-11</TD>
<TD>1.4309</TD>
<TD>1050～1150</TD>
<TD>150</TD>
<TD>165</TD>
<TD>130</TD>
<TD>110</TD>
<TD>—</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>GX5CrNi19-11</TD>
<TD>1.4308</TD>
<TD>1050～1150</TD>
<TD>150</TD>
<TD>160</TD>
<TD>125</TD>
<TD>110</TD>
<TD>—</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>GX5CrNiNb19-11</TD>
<TD>1.4552</TD>
<TD>1050～1150</TD>
<TD>150</TD>
<TD>165</TD>
<TD>145</TD>
<TD>130</TD>
<TD>120</TD>
<TD>110</TD>
<TD>100</TD></TR>
<TR>
<TD>GX2CrNiMo19-11-2</TD>
<TD>1.4409</TD>
<TD>1080～1150</TD>
<TD>150</TD>
<TD>175</TD>
<TD>145</TD>
<TD>115</TD>
<TD>105</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>GX5CrNiMo19-11-2</TD>
<TD>1.4408</TD>
<TD>1080～1150</TD>
<TD>150</TD>
<TD>170</TD>
<TD>135</TD>
<TD>115</TD>
<TD>105</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>GX5CrNiMoNbN19-11-2</TD>
<TD>1.4581</TD>
<TD>1080～1150</TD>
<TD>150</TD>
<TD>185</TD>
<TD>160</TD>
<TD>145</TD>
<TD>130</TD>
<TD>120</TD>
<TD>115</TD></TR>
<TR>
<TD>GX2CrNiMo28-20-2</TD>
<TD>1.4458</TD>
<TD>1100～1180</TD>
<TD>150</TD>
<TD>165</TD>
<TD>135</TD>
<TD>120</TD>
<TD>110</TD>
<TD>110</TD>
<TD>—</TD></TR>
<TR>
<TD>GX2CrNiMoN22-5-3</TD>
<TD>1.4470</TD>
<TD>1120～1150</TD>
<TD>150</TD>
<TD>330</TD>
<TD>280</TD>
<TD>② </TD>
<TD>—</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>GX2CrNiMoCuN25-6-3-3</TD>
<TD>1.4517</TD>
<TD>1120～1150</TD>
<TD>150</TD>
<TD>390</TD>
<TD>330</TD>
<TD>② </TD>
<TD>—</TD>
<TD>—</TD>
<TD>—</TD></TR>
<TR>
<TD>GX2CrNiMoN26-7-4</TD>
<TD>1.4469S</TD>
<TD>1140～1180</TD>
<TD>150</TD>
<TD>390</TD>
<TD>330</TD>
<TD>② </TD>
<TD>—</TD>
<TD>—</TD>
<TD>—</TD></TR></TBODY></TABLE>
<P> ① σ<SUB>0.2</SUB>值与σ<SUB>0.1</SUB>下限值相差约25MPa。</P>
<P> ② 奥氏体型和奥氏体-铁素体型承压铸钢通常用于不超过250℃的压力容器。<BR></P>
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