POSCO Holdings Inc.
HOT-ROLLED STEEL SHEET HAVING EXCELLENT EXPANDABILITY AND METHOD FOR MANUFACTURING SAME

Abstract:

The present invention relates to steel used for a sash component and the like of a vehicle and, more specifically, to a hot-rolled steel sheet for a high-strength electric resistance welded steel pipe having excellent expandability and a method for manufacturing same, the hot-rolled steel sheet having a smaller decrease in the strength of a welding heat-affected zone (HAZ) formed during electric resistance welding, in comparison with a base material.