17Ni-11Co-2.5Mo-1.8Ti Maraging Steel

metal

17Ni-11Co-2.5Mo-1.8Ti is a precipitation-hardening maraging steel engineered to achieve ultra-high strength through controlled aging of a martensitic matrix, with nickel and cobalt as primary strengthening elements supported by molybdenum and titanium. This alloy is employed in aerospace and defense applications demanding exceptional strength-to-weight ratios with minimal toughness loss, including landing gear, rocket motor cases, and structural components in hypersonic vehicles. Engineers select maraging steel over conventional high-strength steels when they need excellent fracture toughness at extreme strength levels, superior fatigue resistance, and reliable performance after extended service in critical load paths.

aerospace landing gearrocket motor casesmissile structureshigh-performance tooling dieshypersonic vehicle framescritical structural fasteners

Compliance & Regulations

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

Units:

si imperial

Property OverviewNormalized to typical max values

Property	Value	Unit	Conditions
Elongation at Break(εf)	7.700	-	—
Ultimate Tensile Strength(σUTS)	2.570	GPa	—
Yield Strength (0.2% offset)(σy)	2.510	GPa	—

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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.