Hot-stamping formed body

A hot-stamping formed body comprising, as a chemical composition, by mass %:

• C:
• 0.20% to 0.70%;
• Si:
• 0.010% to 2.000%;
• Mn:
• 0% to 2.00%;
• P:
• 0.100% or less;
• S:
• 0.0100% or less;
• N:
• 0.0100% or less;
• O:
• 0.0200% or less;
• Al:
• 0.0010% to 0.5000%;
• Mo:
• 0.0010% to 1.0000%;
• B:
• 0.0005% to 0.0100%;
• Ti:
• 0.010% to 0.100%;
• Nb:
• 0% to 0.100%;
• Cr:
• 0% to 1.00%;
• Co:
• 0% to 3.00%;
• Ni:
• 0% to 3.00%;
• Cu:
• 0% to 1.00%;
• V:
• 0% to 1.000%;
• W:
• 0% to 1.00%;
• Ca:
• 0% to 1.0000%;
• Mg:
• 0% to 1.0000%;
• REM:
• 0% to 1.0000%;
• Sb:
• 0% to 1.000%;
• Zr:
• 0% to 1.000%;
• As:
• 0% to 1.000%;
• one or more of Ta, Re, Os, Ir, Tc, Pb, Se, Bi, and Sn:
• 0% to 1.000% in total;
• and
• a remainder:
• Fe and impurities,
• wherein in a case where a range from a position at ⅛ of a thickness to a position at ⅜ of the thickness in a thickness direction from a surface is set as a ¼-depth position,
• a microstructure at the ¼-depth position includes, by area ratio,
• martensite:
• 80.0% or more, and
• retained austenite:
• 0.0% or more and less than 5.0%,
• in the microstructure at the ¼-depth position, a number density of an iron-based carbide present in the martensite and having a circle equivalent diameter of more than 0.5 μm is less than 0.050 particles/μm2, and an average distance between the iron-based carbide and another iron-based carbide nearest to the iron-based carbide is 3.0 μm or more, and
• in the microstructure at the ¼-depth position, a prior austenite grain size is 20.0 μm or less.