Invention Application
- Patent Title: INDUCTION HEATABLE STAINLESS STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND METHOD OF MANUFACTURING THE SAME
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Application No.: US15372800Application Date: 2016-12-08
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Publication No.: US20170175236A1Publication Date: 2017-06-22
- Inventor: Seong In JEONG , Sun Mi KIM , Man Jin HA
- Applicant: POSCO
- Priority: KR10-2015-0183267 20151221
- Main IPC: C22C38/42
- IPC: C22C38/42 ; C22C38/02 ; C22C38/00 ; B21B1/22 ; C21D8/02 ; C21D8/00 ; C21D6/00 ; B21B3/00 ; C22C38/04 ; C21D9/46

Abstract:
A stainless steel sheet for cookware and a method of manufacturing the same and, particularly, an induction heatable stainless steel sheet having excellent corrosion resistance and a method of manufacturing the same are provided. The induction heatable stainless steel sheet having excellent corrosion resistance includes, by wt %, C: 0.1% or less (excepting 0%), Si: 0.2% to 3.0%, Mn: 1.0% to 4.0%, Cr: 19.0% to 23.0%, Ni: 0.3% to 2.5%, N: 0.18% to 0.3%, Cu: 0.3% to 2.5%, iron (Fe) as a residual component thereof, and other unavoidable impurities, and has relative permeability of 20μr to 80μr. In addition, a microstructure includes, by volume %, ferrite: 30% to 70% and austenite as a remainder thereof.
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