CUTTING TOOL

摘要

[Problem] To provide a cutting tool which is formed from a cermet sintered body that is reduced in deformation due to firing and has high strength. [Solution] A cutting tool (1) which is composed of a cermet sintered body (6) that is configured of a hard phase (11) which is composed of two kinds of hard phases, namely a first hard phase (12) and a second hard phase (13), and a binder phase (14) that is composed of Co and/or Ni. At a depth of 400 µm or more from the rake face (2)-side surface of the cermet sintered body (6), the residual stress s11[1i] in the s11 direction of the first hard phase (12) is a compressive stress of 80 MPa or more (s11[1i] = -80 MPa), the residual stress s11[2i] in the s11 direction of the second hard phase (13) is a compressive or tensile stress of from -50 MPa to 50 MPa (s11[2i] = -50 MPa to 50 MPa), and the residual stress s11[bi] in the s11 direction of the binder phase (14) is a compressive or tensile stress of from -50 MPa to 50 MPa (s11[bi] = -50 MPa to 50 MPa) as determined by a 2D method.