High strength hot rolled steel sheet

A high strength hot rolled steel sheet comprising a chemical composition comprising, by mass %,

• C:
• 0.050 to 0.100%,
• Si:
• 0.010 to 0.200%,
• Mn:
• 1.00 to 2.50%,
• Ti:
• 0.001 to 0.120%,
• Al:
• 0.001 to 0.050%,
• B:
• 0.0005 to 0.0050%,
• P:
• 0.100% or less,
• S:
• 0.050% or less,
• N:
• 0.0050% or less,
• O:
• 0 to 0.0050%,
• Cu:
• 0 to 0.20%,
• Ni:
• 0 to 0.20%,
• Sn:
• 0 to 0.10%,
• Cr:
• 0 to 0.40%,
• Mo:
• 0 to 0.20%,
• Nb:
• 0 to 0.05%,
• V:
• 0 to 0.10%,
• As:
• 0 to 0.100%,
• Zr:
• 0 to 0.100%,
• Ca:
• 0 to 0.0050%,
• Mg:
• 0 to 0.100%,
• Bi:
• 0 to 0.020%,
• Co:
• 0 to 0.20%,
• W:
• 0 to 0.20%,
• Zn:
• 0 to 0.20%,
• REM:
• 0 to 0.1000%, and
• balance:
• Fe and impurities, wherein
• when a total width in a direction perpendicular to a rolling direction and sheet thickness direction is W, a microstructure at a ¼ position in sheet thickness at all positions of a 1/10W position, 3/10W position, 5/10W position, 7/10W position, and 9/10W position from an end in a width direction comprises, by area %,
• tempered martensite:
• 95% or more,
• fresh martensite:
• 5% or less, and
• at least one of ferrite, upper bainite, and pearlite:
• 5% or less in total, and
• a difference between a maximum value and minimum value in tensile strength at all the positions in the width direction is 30 MPa or less.