Steel plate member combination structure, automotive structural member, center pillar, bumper and door beam

摘要

The steel plate member combination structure includes a first steel plate member having a main wall portion, a rising wall portion rising from an end edge of the main wall portion, and a flange portion extending in parallel to the main wall portion from an end edge of the rising wall portion; ; A second steel plate member having a horizontal wall portion that is joined to at least one of an inner surface or an outer surface of the first steel plate member and abuts the main wall portion, and a vertical wall portion that abuts the rising wall portion, wherein the first steel sheet member and the first agent are provided. 2 steel plate member satisfies a predetermined relational expression.