| 摘要 |
A martensitic stainless steel for a disc brake rotor includes, in mass percent, <table-cwu id="TABLE-US-00001"> <number>1</number> <table frame="none" colsep="0" rowsep="0"> <tgroup align="left" colsep="0" rowsep="0" cols="3"> <colspec colname="1" colwidth="63PT" align="left"/> <colspec colname="2" colwidth="56PT" align="left"/> <colspec colname="3" colwidth="98PT" align="left"/> <thead> <row> <entry></entry> </row> <row><entry namest="1" nameend="3" align="center" rowsep="1"></entry> </row> </thead> <tbody valign="top"> <row> <entry>C: 0.04-0.10%,</entry> <entry>Si: at most 1.0%,</entry> <entry>Mn: 0.1-2.0%,</entry> </row> <row> <entry>P: at most 0.04%,</entry> <entry>S: at most 0.01%,</entry> <entry>Cr: greater than 11.5 to 13.5%,</entry> </row> <row> <entry>Al: at most 0.1%,</entry> <entry>N: at most 0.04%,</entry> <entry>Cu: 0-1.0%,</entry> </row> <row> <entry>Ni: 0-1.0%,</entry> <entry>Ti: 0-0.03%</entry> </row> <row><entry namest="1" nameend="3" align="center" rowsep="1"></entry> </row> </tbody> </tgroup> </table> </table-cwu> and one or more of Nb: 0.01-0.08% and V: 0.05-0.5%, with the value of GP expressed by the following formula being at least 50 (%):<paragraph lvl="0"><in-line-formula>GP (%)=700C(%)+800N(%)+20Ni(%)+10[Cu(%)+Mn(%)]-6.2Cr(%)-9.2Si(%)-9.3Mo(%)-14V(%)-74.4Ti(%)-37.2A1(%)+63.2.</in-line-formula>
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