Steel for nitriding and nitrided component

A nitrided component having a chemical composition consisting of, by mass percent, C:

• 0.07 to 0.14%, Si:
• 0.10 to 0.30%, Mn:
• 0.4 to 1.0%, S:
• 0.005 to 0.030%, Cr:
• 1.0 to 1.5%, Mo:
• 0.05% or less (including 0%), Al:
• 0.010% or more to less than 0.10%, and V:
• 0.10 to 0.25%, Fn1 expressed by Formula (1) is 2.30 or less, and the balance of Fe and impurities, wherein P, N, Ti and O among the impurities are P:
• 0.030% or less, N:
• 0.008% or less, Ti:
• 0.005% or less, and O:
• 0.0030% or less, in which the surface hardness is 650 to 900 in Vickers hardness, the core hardness is 150 or higher in Vickers hardness, and the effective case depth is 0.15 mm or larger:
• Fn1=0.61Mn+1.11Cr+0.35Mo+0.47V (1)
• where, the symbol of each element in Formula (1) represents the content thereof in mass percent.

A nitrided component having a chemical composition consisting of, by mass percent, C:

• 0.07 to 0.14%, Si:
• 0.10 to 0.30%, Mn:
• 0.4 to 1.0%, S:
• 0.005 to 0.030%, Cr:
• 1.0 to 1.5%, Mo:
• 0.05% or less (including 0%), Al:
• 0.010% or more to less than 0.10%, and V:
• 0.10 to 0.25%, Fn1 expressed by Formula (1) is 2.30 or less, at least one element selected from, by mass percent, Cu:
• 0.30% or less and Ni:
• 0.25% or less, and the balance of Fe and impurities, wherein P, N, Ti and O among the impurities are P:
• 0.030% or less, N:
• 0.008% or less, Ti:
• 0.005% or less, and 0:
• 0.0030% or less, in which the surface hardness is 650 to 900 in Vickers hardness, the core hardness is 150 or higher in Vickers hardness, and the effective case depth is 0.15 mm or larger:
• Fn1=0.61Mn+1.11Cr+0.35Mo+0.47V (1)
• where, the symbol of each element in Formula (1) represents the content thereof in mass percent.