Hot-rolled steel sheet

A hot-rolled steel sheet having a chemical composition comprising, in mass %,

• C:
• 0.045 to 0.120%,
• Si:
• 0 to 3.00%,
• Mn:
• 1.20 to 2.60%,
• Ti:
• 0.020 to 0.180%,
• Al:
• 0.010 to 0.400%,
• P:
• 0.080% or less,
• S:
• 0.0100% or less,
• N:
• 0.0050% or less,
• O:
• 0.010% or less,
• Nb:
• 0 to 0.100%,
• V:
• 0 to 1.000%,
• Cu:
• 0 to 1.000%,
• Cr:
• 0 to 2.000%,
• Mo:
• 0 to 3.000%,
• Ni:
• 0 to 0.500%,
• B:
• 0 to 0.0100%,
• Ca:
• 0 to 0.0500%,
• Mg:
• 0 to 0.0500%,
• REM:
• 0 to 0.100%,
• Bi:
• 0 to 0.100%,
• Ta:
• 0 to 0.100%,
• Zr:
• 0 to 0.500%,
• Co:
• 0 to 3.000%,
• Zn:
• 0 to 0.200%,
• W:
• 0 to 0.200%,
• Sb:
• 0 to 0.500%,
• As:
• 0 to 0.050%,
• Sn:
• 0 to 0.050%, and
• a remainder comprising Fe and impurities,
• wherein GAMS/GAMI, which is a ratio of GAMI, which is an area average value of GAM values of grains at a position of ¼ depth from a surface in a sheet thickness direction, to GAMS, which is an area average value of GAM values of grains in a region from the surface to a depth of 200 μm in the sheet thickness direction, is 0.70 to 1.05, and
• in a microstructure at the position of ¼ depth from the surface in the sheet thickness direction,
• the area ratio of a region having a GAM value of more than 0.6° is 50% or more, and the sum of the area ratio of a region having a GAM value of more than 3.0° and the area ratio of residual austenite is less than 15%, and
• a standard deviation of the area average value of the GAM values of grains in a region from the surface to a depth of 200 μm in the sheet thickness direction is 0.25 to 0.65°.