POSCO Holdings Inc.
AL-FE-ALLOY PLATED STEEL SHEET FOR HOT FORMING, HAVING EXCELLENT TWB WELDING CHARACTERISTICS, HOT FORMING MEMBER, AND MANUFACTURING METHODS THEREFOR

Abstract:

Provided is an Al--Fe-alloy plated steel sheet for hot forming, having excellent TWB welding characteristics since excellent hardness uniformity of a TWB weld zone after hot forming is obtained by suitably controlling a batch annealing condition, after plating Al, such that an Al--Fe-alloy layer is formed; a hot forming member; and manufacturing methods therefor.