Allegheny Ludlum's ATI 601™ alloy (UNS Designation N06601) is an austenitic nickel-chromium-iron alloy designed for both heat and corrosion resistance. As compared to ATI 600 alloy (UNS Designation N06600), the ATI 601 alloy has, in addition to increased chromium, an aluminum content which together provide outstanding resistance to oxidation. In addition, ATI 601 alloy has good resistance to environments containing carbon and sulfur and this alloy also resists aqueous corrosion.
The ATI 601 alloy is used in aerospace applications, for heat and chemical processing equipment, and in power generation, pollution control and heat treating applications.
Forming, machining and welding properties are similar to those of stable austenitic stainless steels.