HOT STAMP MOLDED ARTICLE METHOD FOR PRODUCING HOT STAMP MOLDED ARTICLE ENERGY ABSORBING MEMBER AND METHOD FOR PRODUCING ENERGY ABSORBING MEMBER

摘要

The hot stamp molded article has a mass%, C: 0.002 to 0.1%, Si: 0.01 to 0.5%, Mn + Cr: 0.5 to 2.5%, P limited to 0.1% or less, S limited to 0.01% or less, 0.05% or less T-Al and N limited to 0.005% or less, and when Mn + Cr is 1.0% or more, it contains 0.0005 to 0.004% of B, and has a component composition consisting of the remaining amount Fe and unavoidable impurities, 99.5% to 100% of bainitic ferrite by metal structure consisting of 0 to 90% of martensite, 10 to 100% of bainite, and less than 0.5% of unavoidable mixed structure, or area ratio. And a metal structure composed of less than 0.5% of unavoidable mixed structure.