Cubic boron nitride sintered material

A cubic boron nitride sintered material comprising cubic boron nitride grains and a binder, wherein

• a content of the cubic boron nitride grains in the cubic boron nitride sintered material is no less than 30% by volume and no more than 80% by volume,
• the binder includes
• at least one selected from a second group consisting of a material made of a single element selected from a first group consisting of a group 4 element, a group 5 element and a group 6 element of the periodic table, aluminum, silicon, iron, cobalt and nickel, and an alloy and an intermetallic compound each composed of no less than two elements selected from the first group, and/or
• at least one selected from a fourth group consisting of a compound composed of at least one element selected from the first group and at least one element selected from a third group consisting of nitrogen, carbon, boron and oxygen, and a solid solution of the compound, and
• a content of a void in the cubic boron nitride sintered material is no less than 0.001% by volume and no more than 0.20% by volume.