AUSTENITIC STAINLESS STEEL PROCESSED PRODUCT HAVING EXCELLENT SURFACE CHARACTERISTICS, AND MANUFACTURING METHOD THEREFOR

AUSTENITIC STAINLESS STEEL PROCESSED PRODUCT HAVING EXCELLENT SURFACE CHARACTERISTICS, AND MANUFACTURING METHOD THEREFOR

An austenitic stainless steel product having excellent surface characteristics and a manufacturing method therefor are disclosed. The disclosed austenitic stainless steel product comprises an austenitic stainless steel comprising, by weight percent, 0.005 to 0.15% of C, 0.1 to 1.0% of Si, 0.1 to 2.0...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHIM, Jae-Hong, KANG, Hyung Gu, JO, Gyu Jin, CHAE, Dong Chul
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:An austenitic stainless steel product having excellent surface characteristics and a manufacturing method therefor are disclosed. The disclosed austenitic stainless steel product comprises an austenitic stainless steel comprising, by weight percent, 0.005 to 0.15% of C, 0.1 to 1.0% of Si, 0.1 to 2.0% of Mn, 6.0 to 8.0% of Ni, 16 to 18% of Cr, 0.1 to 4.0% of Cu, 0.005 to 0.2% of N, 0.01 to 0.2% of Mo, and the remainder comprising iron (Fe) and other unavoidable impurities, and a Ni surface negative segregation thereof defined by the following formula (1) is 0.6 to 0.9 and the martensite fraction thereof is 10 to 30%.Here, CNi-Minis the minimum concentration of Ni on the surface and CNi-Aveis the average concentration of Ni on the surface.