Resulphurized austenitic stainless steel with improved machinability used especially in the field of machining at very high cutting speed and in the field of bar turning

摘要

The present invention relates to a resulphurized austenitic stainless steel with improved machinability, used in particular in the field of machining at high cutting speed and the field of the invention, characterized in that its weight composition is as follows: & br / - carbon to 0,1%, br / - silicon ≦ 2%, br / - manganese ≦ 2%, br / - nickel of 7 to 12%, br / - chromium, 15 to 25%, br / - sulphur, 0,10 to 0,55%, br / - copper, of 1 to 5%, br / - calcium 35.10 * * - 4%, br / - oxygen 70.10 * * - 4%, br / the ratio of the calcium content in the oxygen content being between 0,2 and 0,6.