Vehicle underbody component material, method of manufacturing vehicle underbody component material, and method of manufacturing vehicle underbody component

摘要

Provided is a technique capable of preventing or suppressing fatigue fracture of a vehicle underbody part material by 3DQ. The vehicle underbody component material according to the present disclosure includes a quenched and bent steel pipe and 30% by mass or more of Al provided on the surface of the steel pipe, and an Al-Fe alloy on the surface. And an existing plating film layer.