Patent ID: 11904572
Assignee: POSCO CO., LTD
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 4:
5. The hot press formed member of claim 1,
wherein the base iron comprises, by wt %, 0.18 to 0.25% of C, 0.1 to 0.5% of Si, 0.9 to 1.5% of Mn, 0.03% or less of P, 0.01% or less of S, 0.01 to 0.05% of Al, 0.01 to 0.5% of Cr, 0.01 to 0.05% of Ti, 0.001 to 0.005% of B, 0.009% or less of N, and a balance of Fe and inevitable impurities.