The paper presents the laboratory measurements results of temperature distribution in the cutting zone during orthogonal turning of a GrDe 2 titanium tube. The cutting tool used during the tests was a bimetallic cut-off tool with an uncoated insert made of P10 sintered carbide. The test plan was developed using the miniTab16 computer application and the Taguchi method. The tests were performed in accordance with orthogonal table l9, which describes nine cutting trials for two independent factors, cutting speed