Duplex stainless steel

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United States of America Patent

PATENT NO 11555231
APP PUB NO 20140219856A1
SERIAL NO

14342865

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Abstract

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The invention relates a duplex ferritic austenitic stainless steel having high formability utilizing the TRIP effect and high corrosion resistance with the balanced pitting resistance equivalent. The duplex stainless steel contains less than 0.04 weight % carbon, less than 0.7 weight % silicon, less than 2.5 weight % manganese, 18.5-22.5 weight % chromium, 0.8-4.5 weight % nickel, 0.6-1.4 weight % molybdenum, less than 1 weight % copper, 0.10-0.24 weight % nitrogen, the rest being iron and inevitable impurities occurring in stainless steels.

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Patent Owner(s)

  • OUTOKUMPU OYJ

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jonsson, Jan Y Avesta, SE 8 12
Oliver, James Fjärdhundra, SE 62 557
Thulin, Alexander Luleå, SE 2 4

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