FERRITIC STAINLESS STEEL HAVING EXCELLENT STRENGTH AND CORROSION RESISTANCE TO ACID AND METHOD OF MANUFACTURING THE SAME
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Jun 18, 2020
app pub date -
Dec 4, 2017
filing date -
Dec 23, 2016
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Abstract
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%.
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