Hot rolled steel sheet

A hot rolled steel sheet having a chemical composition consisting of, in mass %,

• C:
• 0.07 to 0.22%,
• Si:
• 1.00 to 3.20%,
• Mn:
• 0.80 to 2.20%,
• Al:
• 0.010 to 1.000%,
• N:
• 0.0060% or less,
• P:
• 0.050% or less,
• S:
• 0.005% or less,
• Ti:
• 0 to 0.150%,
• Nb:
• 0 to 0.100%,
• V:
• 0 to 0.300%,
• Cu:
• 0 to 2.00%,
• Ni:
• 0 to 2.00%,
• Cr:
• 0 to 2.00%,
• Mo:
• 0 to 1.00%,
• B:
• 0 to 0.0100%,
• Mg:
• 0 to 0.0100%,
• Ca:
• 0 to 0.0100%,
• REM:
• 0 to 0.1000%,
• Zr:
• 0 to 1.000%,
• Co:
• 0 to 1.000%,
• Zn:
• 0 to 1.000%,
• W:
• 0 to 1.000%,
• Sn:
• 0 to 0.050%, and
• the balance:
• Fe and impurities, wherein
• when a width and a thickness of the steel sheet in a cross section perpendicular to a rolling direction of the steel sheet are defined as W and t, respectively, a metal microstructure includes, in area %, at a position ¼W or ¾W from an end face of the steel sheet and ¼t or ¾t from a surface of the steel sheet,
• retained austenite:
• more than 2% to 10% or less,
• martensite:
• 2% or less,
• bainite:
• 10 to 70%,
• pearlite:
• 2% or less,
• the balance:
• ferrite
• an average circle-equivalent diameter of a metallic phase consisting of retained austenite and/or martensite is 1.0 to 5.0 μm,
• an average of minimum distances between adjacent metallic phases is 3 μm or more,
• a standard deviation of nano hardness is 2.5 GPa or less,
• the hot rolled steel sheet has an equivalent plastic strain of 0.50 or more.