11Ni-13Co Maraging Steel (var. 2) is an iron-nickel-cobalt maraging steel, a precipitation-hardened ultra-high-strength alloy designed to achieve exceptional strength through aging heat treatment rather than carbon content. This composition variant is used in demanding aerospace, defense, and tooling applications where extreme strength combined with reasonable toughness is critical—particularly in rocket motor cases, landing gear, and high-performance dies where weight savings and fatigue resistance justify the material cost.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 15.60 | - | — | ||
Ultimate Tensile Strength(σUTS) | 283.5 | ksi | — | ||
Yield Strength (0.2% offset)(σy) | 257.8 | ksi | — |