POSCO Holdings Inc.
ULTRAHIGH-STRENGTH AND HIGH-DUCTILITY STEEL SHEET HAVING EXCELLENT COLD FORMABILITY, AND MANUFACTURING METHOD THEREFOR

Abstract:

The present invention relates to an automotive steel sheet and, more specifically, provides: an ultrahigh-strength and high-ductility steel sheet ensuring ultrahigh strength and high ductility and, simultaneously, having excellent cold formability due to a high yield strength ratio, and improved collision characteristics.