| 摘要 |
An HPF member having excellent delamination resistance and a preparation method therefor are provided. The present invention relates to an HPF member having excellent delamination resistance and having a hot dipped aluminized layer formed on the surface of a base steel sheet, wherein the base steel sheet comprises 0.18-0.25 wt% of C, 0.1-0.5 wt% of Si, 0.9-1.5 wt% of Mn, 0.03 wt% or less of P, 0.01 wt% or less of S, 0.01-0.05 wt% of Al, 0.05-0.5 wt% of Cr, 0.01-0.05 wt% of Ti, 0.001-0.005 wt% of B, 0.009 wt% or less of N and the balance of Fe and other impurities, the aluminized layer comprises a single soft diffusion layer comprising α-Fe with solid-solubilized Al, and the hardness of the diffusion layer is 300-600 (Hv). |
