Austenitic stainless steel product having excellent surface properties and manufacturing method of the same

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United States of America

PATENT NO 11299799
APP PUB NO 20200190643A1
SERIAL NO

16472973

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Abstract

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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%.

description='In-line Formulae' end='lead'(CNi-Min)/(CNi-Ave)  formula (1)description='In-line Formulae' end='tail'

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Patent Owner(s)

Patent OwnerAddress
POSCO CO LTDPOHANG-SI

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chae, Dong Chul Pohang-si, KR 7 2
Jo, Gyu Jin Pohang-si, KR 9 3
Kang, Hyung Gu Pohang-si, KR 7 7
Shim, Jae-Hong Seoul, KR 4 16

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