HOT PRESS FORMED PARTS HAVING EXCELLENT POWDERING RESISTANCE DURING HOT PRESS FORMING AND METHOD FOR MANUFACTURING SAME

摘要

Provided are: hot press formed (HPF) member having excellent powdering resistance during hot press forming; and a method for manufacturing same. The present invention relates to an HPF member having excellent powdering resistance during hot press forming the HPF member having a hot dip coating layer containing Al on a surface of a base steel sheet wherein the base steel sheet includes based on wt% 0.18 0.25% of C 0.1 1.0% of Si 0.9 1.5% of Mn 0.03% or less of P 0.01% or less of S 0.01 0.05% of Al 0.05 0.5% of Cr 0.01 0.05% of Ti 0.001 0.005% of B 0.009% or less of N the balance Fe and the other impurities; the hot dip coating layer comprises a soft diffusion layer and a hard alloy layer; the alloy layer has a Tau phase in the range of 10 30% in terms of area percent; and the Tau phase contains 10% or more of Si and 0.2% or more of Cr on the basis of wt% of the Tau phase itself such that the alloy layer has a thickness of 35 or less.