发明名称 |
HIGH-NITROGEN NICKEL-FREE DUPLEX STAINLESS STEELS WITH AN EXCELLENT ECO-INDEX AND PITTING CORROSION RESISTANCE |
摘要 |
<p>PURPOSE: A high functional nickel (Ni)-free-high nitrogen duplex stainless steel having a high pitting corrosion resistance is provided to replace Ni with manganese (Mn) and nitrogen (N), thereby improving economic efficiency, price stability, and eco-friendliness for the steel. CONSTITUTION: A high functional nickel (Ni)-free-high nitrogen duplex stainless steel having a high pitting corrosion resistance includes 16.5 to 19.5 wt% of Cr, 2.5 to 3.5 wt% of Mo, 1.0 to 5.5 wt% of W, 5.5 to 7.0 wt% of Mn, 0.35 to 0.45 wt% of N, and remnants Fe and impurities having below 0.03 wt% of C and below 0.5 wt% of Si. [Reference numerals] (AA) Comparison example 1; (BB) Comparison example 2; (CC) Implementation example 1; (DD) Implementation example 2; (EE) Implementation example 3; (FF) Implementation example 4</p> |
申请公布号 |
KR20130088511(A) |
申请公布日期 |
2013.08.08 |
申请号 |
KR20120009787 |
申请日期 |
2012.01.31 |
申请人 |
KOREA INSTITUTE OF MACHINERY & MATERIALS |
发明人 |
HA, HEON YOUNG;LEE, TAE HO;HWANG, BYOUNG CHUL |
分类号 |
C22C38/00;C22C38/22;C22C38/38 |
主分类号 |
C22C38/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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