INTERIOR HIGH PRESSURE-FORMED COMPONENT MADE OF STEEL, USE OF A STEEL FOR PRECURSORS FOR PRODUCING AN INTERIOR HIGH PRESSURE-FORMED COMPONENT, AND PRECURSOR THEREFOR

摘要

The invention relates to an interior high pressure-formed component made of ferritic-bainitic steel, characterized by a precursor having at least 5 volume-% bainite, which has a composition containing 0.04-0.12 wgt.-% C, 0.8-2.0 wgt.-% Mn, ≤ 0.60 wgt.-% Si, ≤ 0.02 wgt.-% P, ≤ 0.01 wgt.-% S, 0.01-0.08 wgt.-% Al, 0.008 wgt.-% B, ≤ 0.3 wgt.-% Cu, ≤ 0.6 wgt.-% Cr, ≤ 0.3 wgt.-% Ni, ≤ 0.3 wgt.-% Mo, ≤ 0.1 wgt.-% Ti, ≤ 0.1 wgt.-% V, and ≤ 0.06 wgt.-% Nb, the remainder iron and routine contaminants due to melting and a total proportion of Nb and/or V and/or Ti in the composition of at least 0.02 wgt.-%.