Stainless steel having excellent brazeability

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United States of America Patent

PATENT NO 10669606
APP PUB NO 20180037968A1
SERIAL NO

15555678

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Abstract

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A stainless steel exhibiting an excellent brazeability includes in mass %: C: from 0.001% to 0.1%; Si: from more than 1.5% to 4.0%; Mn: from 0.05% to 4.0%; Cr: from 10.5% to 30%; Ni: 35% or less; N: from 0.001% to 0.4%; one or both of Ti: 0.002% to 0.030% and Al: 0.002% to 0.10%; and a balance being Fe and inevitable impurities, in which an Si content, a Ti content and an Al content satisfy Formula 1, and an oxide film with a composition satisfying Formula 2 is formed on a surface of the stainless steel,

description='In-line Formulae' end='lead'Sim/(Tim+Alm)≥40  Formula 1description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'1.2×SimFem≤Sif/Fef≤5×Sim/Fem  Formula 2description='In-line Formulae' end='tail'

in Formula 1 and Formula 2, a suffix “f” expresses the oxide film in a unit of atom %, and a suffix “m” expresses a base material in a unit of mass %.

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL STAINLESS STEEL CORPORATION8-2 MARUNOUCHI 1-CHOME CHIYODA-KU TOKYO 1000005

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayashi, Atsutaka Hikari, JP 9 33
Hiraide, Nobuhiko Hikari, JP 21 89

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