11Ni-6Co-3.0Mo-1.1Ti Maraging Steel

11Ni-6Co-3.0Mo-1.1Ti is a high-strength maraging steel that achieves its exceptional strength through precipitation hardening of intermetallic phases (primarily Ni₃Mo and Ni₃Ti) rather than carbon, enabling a very low-carbon martensitic matrix that maintains toughness and weldability. Widely used in aerospace, defense, and precision engineering where weight savings and damage tolerance are critical—applications include missile casings, landing gear components, high-performance structural forgings, and tooling for high-temperature service. Engineers select maraging steels over conventional high-strength steels because they combine ultra-high strength with superior fracture toughness, excellent machinability in the annealed condition, minimal distortion during hardening, and minimal hydrogen embrittlement risk compared to conventional hardened alloys.