18Ni-7Co-3.1Mo-0.8Ti Maraging Steel

metal

18Ni-7Co-3.1Mo-0.8Ti is a precipitation-hardening maraging steel engineered for ultra-high strength with controlled ductility, achieved through aging heat treatment rather than carbon content. This composition is used in aerospace and defense applications including rocket motor cases, landing gear, and high-performance tooling where weight savings and damage tolerance are critical; it is also employed in specialized industrial applications demanding both strength and toughness without brittleness. The material's combination of low carbon content, strategic alloying with cobalt and molybdenum, and age-hardening response makes it a preferred choice over conventional high-strength steels when high strength-to-weight ratio and excellent fracture toughness must coexist.

aerospace structuresrocket motor caseslanding gearhigh-strength toolingmissile componentsprecision fasteners

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.