FERRITIC STAINLESS STEEL
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United States of America Patent
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Issued Date -
Dec 11, 2014
app pub date -
Dec 13, 2012
filing date -
Dec 27, 2011
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Abstract
Provided is ferritic stainless steel that realizes high corrosion resistance of a welded zone and that has high resistance to weld cracking. The ferritic stainless steel contains, by mass %, C: 0.001% to 0.030%, Si: 0.03% to 0.80%, Mn: 0.05% to 0.50%, P: 0.03% or less, S: 0.01% or less, Cr: 19.0% to 28.0%, Ni: 0.01% to less than 0.30%, Mo: 0.2% to 3.0%, Al: more than 0.15% to 1.2%, V: 0.02% to 0.50%, Cu: less than 0.1%, Ti: 0.05% to 0.50%, N: 0.001% to 0.030%, and Nb: less than 0.05%. The expression Nb×P≦0.0005 is satisfied in which each element symbol represents the content (by mass %) of the element, and the balance is Fe and inevitable impurities.
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