A carburized component made of steel, wherein base steel is a steel having a chemical composition consisting of, by mass%, C: 0.15 to 0.25%, Si: 0.03 to 0.50%, Mn: more than 0.60% and not more than 1.5%, P: not more than 0.015%, S: 0.006 to 0.030%, Cr: 0.05 to 2.0%, Al: 0.005 to 0.10%, N: not more than 0.03%, and O: not more than 0.0020%, and optionally at least one element selected from, by mass%, Mo: less than 0.50%, Cu: not more than 1.0%, Ni: not more than 3.0%, B: not more than 0.0030%, Ti: not more than 0.10%, Nb: not more than 0.10%, and V: not more than 0.30%, the balance being Fe and impurities, wherein a surface hardened layer portion satisfies following conditions of (a) to (c): (a) C(ave): by mass%, 0.35 to 0.60%, (b) surface roughness Rz: not more than 15 μm, and (c) σr : not more than -800 MPa, σr : not more than -800MPa, and residual stress intensity index Ir: not less than 80000, wherein; C(ave) is an average carbon concentration in the region from the outermost surface to a point of 0.2 mm depth, the surface roughness Rz refers to the surface roughness in maximum height defined in JIS B 0601 , σr refers to the compressive residual stress at the outermost surface of the component, and σr to the compressive residual stress at a point 100 μm from the outermost surface of the component, the residual stress intensity index Ir is calculated by [Ir = ∫|σr(y)|dy], where y μm is the depth from the outermost surface and σr(y) is the residual stress for the points from the outermost surface to a depth of 100 μm, here, the integration interval, that is, the range of "y" is 0 to 100 μm, wherein martensite in the surface-hardened layer portion has a lath-type structural form, optionally tempered and optionally including carbide, such as ε or θ carbide, precipitates. (a) C(ave): by mass%, 0.35 to 0.60%, (b) surface roughness Rz: not more than 15 μm, and (c) σr : not more than -800 MPa, σr : not more than -800MPa, and residual stress intensity index Ir: not less than 80000, wherein; C(ave) is an average carbon concentration in the region from the outermost surface to a point of 0.2 mm depth, the surface roughness Rz refers to the surface roughness in maximum height defined in JIS B 0601 , σr refers to the compressive residual stress at the outermost surface of the component, and σr to the compressive residual stress at a point 100 μm from the outermost surface of the component, the residual stress intensity index Ir is calculated by [Ir = ∫|σr(y)|dy], where y μm is the depth from the outermost surface and σr(y) is the residual stress for the points from the outermost surface to a depth of 100 μm, here, the integration interval, that is, the range of "y" is 0 to 100 μm, wherein martensite in the surface-hardened layer portion has a lath-type structural form, optionally tempered and optionally including carbide, such as ε or θ carbide, precipitates. C(ave) is an average carbon concentration in the region from the outermost surface to a point of 0.2 mm depth, the surface roughness Rz refers to the surface roughness in maximum height defined in JIS B 0601 , σr refers to the compressive residual stress at the outermost surface of the component, and σr to the compressive residual stress at a point 100 μm from the outermost surface of the component, the residual stress intensity index Ir is calculated by [Ir = ∫|σr(y)|dy], where y μm is the depth from the outermost surface and σr(y) is the residual stress for the points from the outermost surface to a depth of 100 μm, here, the integration interval, that is, the range of "y" is 0 to 100 μm, wherein martensite in the surface-hardened layer portion has a lath-type structural form, optionally tempered and optionally including carbide, such as ε or θ carbide, precipitates. <EOS>