AMS 6515

Maraging C350 per AMS 6515 Steel, Maraging, Bars, Forgings, Tubing, and Rings 18.5Ni – 12.0Co – 4.9Mo – 1.40Ti – 0.10Al Double Vacuum Melted, Annealed


The AMS 6515 specification covers Maraging C350 premium aircraft-quality steel in the form of bars, forgings, mechanical tubing, flash welded rings, and stock for forging or flash welded rings.




Maraging 350 is a nickel maraging steel which contains Cobalt as the primary strengthening agent. Maraging 350 has excellent mechanical properties, workability and heat treatment characteristics. Maraging 350 is used for missile and rocket motor cases, landing and takeoff gear components, high performance shafting, gears and fasteners.