Steel for hot stamping, hot stamping process and molded components

摘要

The present invention provides steel used for hot stamping, a hot stamping process and molded components. The present invention can achieve high elongation with steel used for hot stamping using a simple hot stamping process. The molded component has excellent yield strength, toughness strength and elongation. The steel used for hot stamping according to the invention comprises, by weight, 0.1 to 0.19% C, 5.09 to 9.5% Mn, 0.11 to 0.4% V, and 0 to 2% Si + Al, The combination of C and V here fulfills the following two requirements: 1) 0.1 to 0.17% C and 0.11 to 0.4% V; And 2) 0.171 to 0.19% C and 0.209 to 0.4% V.