Precipitation hardened heat-resistant steel

The present invention relates to a precipitation hardened heat-resistant steel containing, in terms of % by mass: 0.005 to 0.2 % of C, not more than 2 % of Si, 1.6 to 5 % of Mn, 15 % or more and less than 20 % ofNi, 10 to 20 % of Cr, more than 2 % and up to 4 % of Ti, 0.1 to 2 % of Al, and 0.001 to...

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Bibliographische Detailangaben
Hauptverfasser: Imaizumi, Kaoru, Kamiya, Naohide
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The present invention relates to a precipitation hardened heat-resistant steel containing, in terms of % by mass: 0.005 to 0.2 % of C, not more than 2 % of Si, 1.6 to 5 % of Mn, 15 % or more and less than 20 % ofNi, 10 to 20 % of Cr, more than 2 % and up to 4 % of Ti, 0.1 to 2 % of Al, and 0.001 to 0.02 % ofB, with the balance being Fe and inevitable impurities, in which a ratio (Ni/Mn) of an amount ofNi to an amount of Mn is 3 to 10, a total amount ofNi and Mn (Ni + Mn) is 18 % or more and less than 25 %, and a ratio (Ti/Al) of an amount of Ti to an amount of A1 is 2 to 20.