Steel material and component

A component comprising

• a hardened layer, and
• a core portion inner than the hardened layer, wherein
• the hardened layer has a martensite area fraction of 90% or more, and
• the core portion has
• a chemical composition consisting of, in mass %:
• C:
• 0.40 to 0.70%,
• Si:
• 0.15 to 2.10%,
• Mn:
• 0.30 to 1.15%,
• Cr:
• 0.01 to less than 0.50%,
• S:
• 0.005 to 0.070%,
• N:
• 0.0020 to 0.0200%,
• Ti:
• 0.0080 to 0.2000%,
• B:
• 0.0005 to 0.0050%,
• Al:
• 0.005 to 0.100%,
• P:
• less than 0.050%,
• Mo:
• 0 to 1.00%,
• Ni:
• 0 to 1.00%,
• Cu:
• 0 to 1.00%,
• Ca:
• 0 to 0.0050%,
• Mg:
• 0 to 0.0050%,
• Te:
• 0 to 0.20%,
• rare earth metal:
• 0 to 0.0050%,
• Zr:
• 0 to 0.0050%,
• Nb:
• 0 to 0.20%,
• V:
• 0 to 0.35%,
• Sb:
• 0 to 0.015%,
• Pb:
• 0 to 0.09%, and
• with the balance being Fe and impurities, and
• satisfying Formula (1) to Formula (5), wherein
• a ferrite area fraction is 40% or less, and a martensite area fraction is 10% or less:
• 290C+50Si+430≥631.0 (1)
• C+( 1/7)Si+(⅕)Mn+( 1/9)Cr+V+( 1/25)Mo≤0.900 (2)
• (1+0.7Si)×(1+3.3333Mn)×(1+2.16Cr)×(1+3.00Mo)×(1+1.73V)×(1+0.365Cu)×(1+0.363Ni)×(2.616−1.6C)≥5.80 (3)
• Ti−4×N≥0 (4)
• 9.7Mnθ+32.4Crθ≤25.9 (5)
• where each symbol of an element in Formula (1) to Formula (4) is to be substituted by a content of a corresponding element (mass %), Mnθ in Formula (5) is to be substituted by a concentration of Mn (mass %) in cementite, and Crθ in Formula (5) is to be substituted by a concentration of Cr (mass %) in cementite.