Hyundai Steel Company

Hee Joong Lim

Byung Gil Yoo

Chee Woong Song

Sung Yul Huh

Hyeong Hyeop Do

A method for manufacturing a hot-stamped part includes reheating a steel slab at a temperature of 1,200&#xb0; C. to 1,250&#xb0; C., the steel slab including, by wt %, 0.20 to 0.50% carbon (C), 0.05 to 1.00% silicon (Si), 0.10 to 2.50% manganese (Mn), more than 0% and not more than 0.015% phosphorus (P), more than 0% and not more than 0.005% sulfur (S), 0.05 to 1.00% chromium (Cr), 0.001 to 0.009% boron (B), 0.01 to 0.09% titanium (Ti), and a balance of iron (Fe) and inevitable impurities; finish-rolling the reheated steel slab at a temperature of 880&#xb0; C. to 950&#xb0; C.; cooling the hot-rolled steel plate without using water, and coiling the cooled steel plate at a temperature of 680&#xb0; C. to 800&#xb0; C. to form a hot-rolled decarburized layer on a surface of the steel plate; pickling the coiled steel plate, followed by cold rolling; annealing the cold-rolled steel plate in a reducing atmosphere; plating the annealed steel plate; and hot-stamping the plated steel plate.

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Gyeonggi-do, South Korea

Hee Joong Lim