POSCO Holdings Inc.
NON-MAGNETIC AUSTENITIC STAINLESS STEEL HAVING EXCELLENT CORROSION RESISTANCE AND MANUFACTURING METHOD THEREFOR

Abstract:

Disclosed is a non-magnetic austenitic stainless steel with excellent corrosion resistance which is applicable to an environment requiring corrosion resistance along with excellent non-magnetic properties, and manufacturing method thereof. The non-magnetic austenitic stainless steel with excellent corrosion resistance according to an embodiment of the present disclosure includes, in percent (%) by weight of the entire composition, C: 0.05% or less, Si: 1.0% or less, Mn: 0.5 to 2.0%, Cr: 16 to 24%, Ni: 10 to 16%, N: 0.2% or less, the remainder of iron (Fe) and other inevitable impurities, and satisfies a following equation (1). Ni.gtoreq.-2.7-5.8*C-1.77*Si-0.066*Mn+0.893*Cr+1.05*Mo-0.88*Cu-13.8*N (1)