C-350-K93540-ATI C-350

ATI C-200TM, ATI C-250TM, and ATI C-350TM alloys (18% nickel maraging steels) are divided into two broad classes depending on the primary strengthening element in the chemical analysis. The original maraging steels, introduced in the early 1960s, depend on cobalt (7-12% cobalt depending on grade) as their strengthening agent; they are cobalt strengthened 18% nickel maraging steels. In the early 1980s, ATI introduced a new type of maraging steel which contains no cobalt and has titanium as a primary strengthening agent; they are titanium-strengthened 18% nickel maraging steels.