Patent ID: 8389108

Claim:
A surface-coated cutting tool comprising: a substrate; and a coated layer formed on the substrate, wherein the coated layer is a physical-vapor-deposition layer having a thickness of 10 μm or more; wherein the coated layer has a surface region having a thickness of 1 μm from a surface of the coated layer, the surface region includes a first region whose integrated residual stress is a compressive stress and a second region whose integrated residual stress is a tensile stress; wherein the integrated residual stress of the surface region falls within the range of −1.5 to 1.5 GPa in any region included in the surface region, and wherein the surface region includes a region from the surface of the coated layer to a thickness of 0.3 μm or less that includes a point Z 2 , wherein the point Z 2 indicates a point where the tensile stress on the surface side changes to a compressive stress as viewed from the surface side.