AUSTENITIC STAINLESS STEEL FOR APPARATUS FOR HIGH-TEMPERATURE USE HAVING WELDED TUBULAR STRUCTURE

Provided is an austenitic stainless steel which exhibits excellent weldability and which is suitable for an apparatus that has a welded pipe structure and that is to be used at high temperature. The austenitic stainless steel contains, in mass%, 0.001 to 0.2% of C, 0.01 to 1.5% of Si, 0.01 to 1.5% o...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUYAMA, Hiroyuki, ISHIMARU, Eiichiro, NAKATA, Michio
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:	Provided is an austenitic stainless steel which exhibits excellent weldability and which is suitable for an apparatus that has a welded pipe structure and that is to be used at high temperature. The austenitic stainless steel contains, in mass%, 0.001 to 0.2% of C, 0.01 to 1.5% of Si, 0.01 to 1.5% of Mn, up to 0.022% of P, up to 0.004% of S, 20.0 to 26.0% of Cr, 15.0 to 23.0% of Ni, 0.001 to 0.07% of N, 0.003 to 0.05% of Al and 0.0003 to 0.005% of Ca, with the contents of Al and Ca satisfying the relationship (1) 0.015 ¤ 0.29(%Al) + 17.92 (%Ca) ¤ 0.093 (1), and may further contain one or more selected from among Cu, Mo, Sn, W, Co, Ti, Nb, V, Zr, B, Mg and REMs in a prescribed amount.