Search International and National Patent Collections
|1. (WO2018163871) HIGH-STRENGTH HOT-ROLLED PLATED STEEL SHEET|
|Applicants:||JFE STEEL CORPORATION
|Title:||HIGH-STRENGTH HOT-ROLLED PLATED STEEL SHEET|
Provided is a high-strength hot-rolled plated steel sheet having excellent forming properties. The present invention has a component composition containing, in terms of mass%, 0.03-0.15% C, 0.4% or less of Si, 1.2-1.9% Mn, 0.05-0.25% Ti, 0.0005-0.0050% B, 0.03% or less of P, 0.005% or less of S, 0.005-0.4% Al, and 0.01% or less of N, the remainder comprising Fe and unavoidable impurities, and has a structure in which the total area ratio of ferrite and/or tempering bainite is 90% or greater, and the volume fraction of Ti carbide having a particle diameter of 20 nm or less is 0.05 vol% or greater.