18Ni-13Co-2.1Mo-2.2Ti Maraging Steel

metal

18Ni-13Co-2.1Mo-2.2Ti is a high-strength maraging steel—an iron-nickel precipitation-hardened alloy that achieves exceptional strength through aging heat treatment rather than carbon hardening, resulting in very low carbon content (~0.05%) and excellent toughness-to-strength ratio. This grade is employed in aerospace and defense applications requiring damage-tolerant structures, including missile cases, aircraft landing gear, and pressure vessels, where the combination of ultra-high strength, low distortion during heat treatment, and superior fracture toughness outweighs the cost premium versus conventional alloy steels. Engineers select maraging steels when weight savings and reliability under extreme loads justify the investment, and when welding or precision machining are critical—properties where carbon-hardened steels exhibit brittleness or dimensional instability.

aerospace structures and componentsrocket motor casingsaircraft landing gearhigh-pressure vesselsmilitary ordnance housingsprecision tooling and dies

Compliance & Regulations

?ITAR?EAR?ISO 10993?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Elongation at Break(εf)	—	-	—	—
Ultimate Tensile Strength(σUTS)	—	ksi	—	—
Yield Strength (0.2% offset)(σy)	—	ksi	—	—

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Regulatory Screening

Environmental

Export Control

Safety & Biocompatibility

Quality & Standards

Industry-Specific

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.