This austenitic stainless-steel grade is understood for its free-machining traits, achieved via the addition of sulfur and selenium. These additions cut back friction throughout machining processes, resulting in improved chip breakage and longer software life. Typical functions embody shafts, screws, nuts, and bolts the place ease of fabrication is paramount. Its chemical composition usually contains chromium (17-19%), nickel (8-10%), and managed quantities of sulfur and selenium.
The improved machinability provided by this particular alloy reduces manufacturing prices and time. Whereas it maintains good corrosion resistance in delicate environments, its sulfur content material barely reduces its weldability and corrosion resistance in comparison with different austenitic grades. Developed as a modification of 304 stainless-steel, this variant addresses the challenges related to machining the usual alloy. Its introduction marked a major development within the manufacturing of complicated parts requiring intricate machining operations.