Stainless steel for use under circumstance where organic acid and saline are present
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United States of America Patent
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Issued Date -
Jan 27, 2005
app pub date -
Apr 22, 2004
filing date -
Nov 22, 2001
priority date (Note) -
Abandoned
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Abstract
The present invention provides a stainless steel which is suitable for use in the food manufacturing plant, particularly a soy sauce manufacturing plant. A stainless steel to be used in the environment which contains organic acid and common salt comprising, C; 0.05 wt % or less, Si; 1.00 wt % or less, Mn; 1.00 wt % or less, P; 0.040 wt % or less, S; 0.03 wt % or less, Ni; 40.0 wt % or less, 16.0 wt %.ltoreq.Cr.ltoreq.26.0 wt %, 2.0 wt %.ltoreq.Mo.ltoreq.8.0 wt %, 0.05 wt %.ltoreq.Al.ltoreq.0.100 wt %, 0.10 wt %.ltoreq.N.ltoreq.0.30 wt %, Mg: 0.005 wt % or less, Ca; 0.0010 wt % or less and balance consisting of Fe and inevitable impurities, and satisfying equation (1), Cr+3.3Mo+20N.gtoreq.38 (1) wherein, Cr, Mo and N show the content of each ingredients by weight %.
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