Surface-coated cutting tool

A surface-coated cutting tool having a substrate and a hard coating film formed on the surface of the substrate, wherein

• the hard coating film has a lower layer formed on the substrate, an intermediate layer formed on the lower layer and consisting of alternating laminated films of layer A and layer B, and an upper layer formed on the intermediate layer,
• the lower layer is a layer having an average composition satisfying 0.30≤a≤0.50 and 0≤b≤0.05 in a compositional formula of (Al1-a-bCraXb)Z (X is one or more elements selected from W, Mo, Ta, Zr, and Nb, and Z is one of N, C, CN, NO, CO, and CNO),
• the layer A of the intermediate layer is a layer having an average composition satisfying 0.30≤c≤0.50 and 0≤d≤0.05 in a compositional formula of (Al1-c-dCrcX′d)Z (X′ is one or more elements selected from W, Mo, Ta, Zr, and Nb, and Z is one of N, C, CN, NO, CO, and CNO),
• the layer B of the intermediate layer is a layer having an average composition satisfying 0.30≤e≤0.50, 0.01≤f≤0.15, 0.01≤g≤0.15, and 0≤h≤0.05 in a compositional formula of (Al1-e-f-g-hCreBfWgX″h)Z (X″ is one or more elements selected from Mo, Ta, Zr, and Nb, and Z is one of N, C, CN, NO, CO, and CNO),
• the upper layer is a layer having an average composition satisfying 0.15≤i≤0.35, 0≤j≤0.05 in a compositional formula of (Ti1-i-jSiiX′″j)Z (X′″ is one or more elements selected from Al, Cr, Zr, B, and W, and Z is one of N, C, CN, NO, CO, and CNO),
• each of the lower layer and the intermediate layer has a crystalline structure, and
• the upper layer has a crystalline structure.