Coated cutting tool

A coated cutting tool comprising:

• a substrate;
• a surface coating disposed on the substrate, wherein said coating includes a Ti(C,N) layer comprising at least one columnar MTCVD Ti(C,N) layer with an average grain width of 0.05-0.5μm, measured on a cross section with a surface normal perpendicular to a surface normal of the substrate, on a rake face of said coated cutting tool, along a straight line in a direction parallel to a surface of the substrate, at a centered position between a lowermost and an uppermost interface of said columnar MTCVD Ti(C,N) layer, an atomic ratio of carbon to the sum of carbon and nitrogen (C/(C+N)) contained in said MTCVD Ti(C,N) layer is in average 0.50-0.65, wherein said MTCVD Ti(C,N) layer exhibits an X-ray diffraction pattern, as measured using CuKα radiation, wherein the texture coefficients TC(hkl) are defined as
• TC
• ⁡
• (
• hkl
• )
• =
• I
• ⁡
• (
• hkl
• )
• I
• 0
• ⁡
• (
• hkl
• )
• ⁡
• [
• 1
• n
• ⁢
• ∑
• n
• =
• 1
• n
• ⁢
• ⁢
• I
• ⁡
• (
• hkl
• )
• I
• 0
• ⁡
• (
• hkl
• )
• ]
• -
• 1
• where I(hkl) =measured intensity (peak area) of the (hkl) reflection,
• I0(hkl)=standard intensity according to ICDD's PDF-card No. 42-1489,
• n=number of reflections used in the calculation,
• (hkl) reflections used are:
• (111),(200),(220),(311),(331),(420),(422)and (511), and
• a sum of TC(422) and TC(311) is less than or equal to 5.5;
• and
• an Al2O3 layer deposited above said Ti(C,N,O) layer.