DUPLEX STAINLESS STEEL

There is provided a duplex stainless steel including a chemical composition consisting of, in mass%, C: 0.10% or less, Si: 3.0% or less, Mn: 8.0% or less, P: 0.040% or less, S: 0.020% or less, Cr: 20.0 to 38.0%, Ni: 3.00 to 12.00%, Mo: 1.0 to 6.5%, Cu: 3.0% or less, N: 0.200 to 0.700%, Al: 0 to 1.0%...

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Bibliographische Detailangaben
Hauptverfasser:	AMAFUJI, Kyohtaroh, OGYU, Shinsuke, ITOH, Hiroki, IWASAKI, Yuuji
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	There is provided a duplex stainless steel including a chemical composition consisting of, in mass%, C: 0.10% or less, Si: 3.0% or less, Mn: 8.0% or less, P: 0.040% or less, S: 0.020% or less, Cr: 20.0 to 38.0%, Ni: 3.00 to 12.00%, Mo: 1.0 to 6.5%, Cu: 3.0% or less, N: 0.200 to 0.700%, Al: 0 to 1.0%, Sn: 0 to 1.0%, W: 0 to 6.0%, Co: 0 to 3.0%, Nb: 0 to 0.50%, Ti: 0 to 1.5%, V: 0 to 1.0%, Zr: 0 to 0.50%, Ta: 0 to 0.100%, B: 0 to 0.100%, Ca: 0 to 0.50%, Mg: 0 to 0.50%, and REM: 0 to 0.10%, with the balance: Fe and impurities, wherein PRE is 41.0 or more, Creq/Nieq is 2.360 to 2.530, an average Md value is 0.9140 or less, and an area fraction of a σ phase is 2.0% or less.