Hyundai Steel Company

Dong Yong Kim

Byung Gil Yoo

Je Woo Soo Kim

Seong Kyung Han

A steel sheet for hot press comprises carbon (C) in an amount of 0.03 to 0.15 wt %, silicon (Si) in an amount of 0.1 to 1.5 wt %, manganese (Mn) in an amount of 1.0 to 2.0 wt %, phosphorus (P) in an amount of 0.1 wt % or less, sulfur (S) in an amount of 0.01 wt % or less, boron (B) in an amount of 0.0005 to 0.005 wt %, a sum of one or more of titanium (Ti), niobium (Nb), and vanadium (V) in an amount of 0.01 to 1.0 wt %, chromium (Cr) in an amount of 0.01 to 0.5 wt %, the balance of iron (Fe), and other unavoidable impurities. The steel sheet for hot press includes MnS-based inclusions, and an area fraction of the MnS-based inclusions is 5% or less.

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Incheon, South Korea

Dong Yong Kim