HARDENABLE MARTENSITIC HEAT TREATED STEEL AND METHOD FOR HEAT TREATING THE STEEL

PROBLEM TO BE SOLVED: To obtain hardenable martensitic heat treated steel exhibiting increased heat resistance at 300 to 600 deg.C compared with the case of steel X12 CrNiMo12 and having high ductility. SOLUTION: This steel has the following composition of, by mass, 9 to 13% Cr, 0.001 to 0.25% Mn, 2...

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Bibliographische Detailangaben
Hauptverfasser:	GOECMEN ALKAN, ERNST PETER DR
Format:	Patent
Sprache:	eng
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:	PROBLEM TO BE SOLVED: To obtain hardenable martensitic heat treated steel exhibiting increased heat resistance at 300 to 600 deg.C compared with the case of steel X12 CrNiMo12 and having high ductility. SOLUTION: This steel has the following composition of, by mass, 9 to 13% Cr, 0.001 to 0.25% Mn, 2 to 7% Ni, 0.001 to 8% Co, at least one of W and Mo by 0.5 to 4% in total, 0.5 to 0.8% V, at least one selected from Nb, Ta, Zr and Hf by 0.001 to 0.1% in total, 0.001 to 0.05% Ti, 0.001 to 0.15% Si, 0.01 to 0.1% C, 0.12 to 0.18% N,