The present invention relates to a high strength hot rolled steel sheet
consisting of 0.04 to 0.15% C, 1.5% or less Si, 0.5 to 1.6% Mn, 0.04% or
less P, 0.005% or less S, 0.04% or less Al, 0.03 to 0.15% Ti, 0.03 to
0.5% Mo, by mass, and balance of Fe and inevitable impurities, and having
a microstructure consisting of ferrite containing precipitates, second
phase of bainite and/or martensite, and other phase, wherein the
percentage of the ferrite containing precipitates is 40 to 95%, and the
percentage of the other phase is 5% or less. For example, the high
strength hot rolled steel sheet having a thickness of 1.4 mm shows a
tensile strength of 780 MPa or higher, an elongation of 22% or higher
elongation, and a hole expansion ratio of 60% or higher, thus the steel
sheet is suitable for reinforcing members automobile cabin and crash
worthiness members of automobile.