14Ni-15Co Maraging Steel

14Ni-15Co Maraging Steel is an iron-based martensitic alloy strengthened by precipitation of intermetallic phases during age-hardening, combining high strength with respectable toughness and ductility at room temperature. Used primarily in aerospace, defense, and precision tooling where weight-critical applications demand ultra-high strength without brittleness, it is favored over conventional high-strength steels and some titanium alloys because it offers superior machinability in the solution-annealed state, excellent weldability, and predictable hardening through controlled heat treatment. Its high cobalt and nickel content makes it more expensive than standard tool steels, but the combination of strength, damage tolerance, and dimensional stability under thermal cycling justifies adoption in demanding environments.