Austenitic stainless steel having a high machinability and an improved cold deformation

摘要

The weldable austenitic stainless steel having a high machinability and an improved cold deformation has the following composition by weight: C less than 0.1%; Si less than 2%; Mn less than 2%; S less than 0.03%; Ni between 8 and 10%; Cr between 15 and 25%; P less than or equal to 0.04%; Mo less than 0.5%; Cu between 1 and 5%; N between 0.02 and 0.07%; Ca more than 30.1031 4%; 0 more than 70.10-4%; Al less than 50.10-4%; the ratio Ca/O being between 0.3 and 0.6.