The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2026
Filed:
May. 29, 2020
Posco, Pohang-si, KR;
POSCO CO., LTD, Pohang-si, KR;
Abstract
Provided is an austenitic stainless steel having excellent hot workability and exhibiting enhanced corrosion resistance of welded parts of hot-rolled and cold-rolled materials. The austenitic stainless steel having excellent corrosion resistance of welded parts according to an embodiment of the present disclosure includes, in percent (%) by weight, 0.02 to 0.07% of C, 0.2 to 0.7% of Si, 2.5 to 4.0% of Mn, 2.5 to 4.0% of Ni, 17.0 to 19.0% of Cr, less than 0.1% of P, less than 0.01% of S, 1.0 to 3.0% of Cu, 0.1 to 0.2% of N, and the remainder of Fe and other inevitable impurities, wherein a crack resistance index (CRN) represented by Formula (1) below is equal to or greater than 0.CRN=542+715C−27Si−1.49Mn+38.8Ni−52.5Cr+35.8Cu+939N (1).