Maraging steel

The present invention provides a maraging steel containing: C is not less than 0.10 and not more than 0.30 mass%, Ni is not less than 6.0 and not more than 9.4 mass%, Co is not less than 11.0 and not more than 20.0 mass%, Mo is not less than 1.0 and not more than 6.0 mass%, Cr is not less than 2.0 a...

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Bibliographische Detailangaben
Hauptverfasser:	KOSHIRO YAMANE, KOTA SASAKI, SHIGEKI UETA, YUTA TANAKA, EI KIMURA, SATOSHI TAKAHASHI, ISAO NAKANOWATARI, HIROYUKI TAKABAYASHI, SATORU YUSA
Format:	Patent
Sprache:	chi ; 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:	The present invention provides a maraging steel containing: C is not less than 0.10 and not more than 0.30 mass%, Ni is not less than 6.0 and not more than 9.4 mass%, Co is not less than 11.0 and not more than 20.0 mass%, Mo is not less than 1.0 and not more than 6.0 mass%, Cr is not less than 2.0 and not more than 6.0 mass%, Al is not less than 0.5 and not more than 1.3 mass%, and Ti is not more than 0.1 mass%, with the balance being Fe and unavoidable impurities, and satisfying A is not less than 1.00 and not more than 1.08, in which A is 0.95+0.35[C]-0.0092[Ni]+0.011[Co]-0.02[Cr]-0.001[Mo], where [C] indicates a content (mass%) of C, [Ni] indicates a content (mass%) of Ni, [Co] indicates a content (mass%) of Co, [Cr] indicates a content (mass%) of Cr, and [Mo] indicates a content (mass%) of Mo, respectively. The maraging steel has a tensile strength of 2,300 MPa or more and is also excellent in the toughness/ductility and fatigue characteristics.