18Ni-7Co-2.9Mo Maraging Steel

metal

18Ni-7Co-2.9Mo is a precipitation-hardened maraging steel engineered for ultra-high strength with retained toughness and ductility. This nickel-cobalt-molybdenum system gains its strength through age-hardening rather than carbon content, making it exceptionally clean and damage-tolerant compared to conventional high-strength steels. It is widely used in aerospace structures, tooling, and precision engineering where the combination of high strength, excellent fatigue resistance, and superior fracture toughness is critical, and where the material's ability to be welded and machined before hardening offers significant manufacturing advantages.

aerospace structural componentsrocket motor casingslanding gear and fastenersprecision dies and moldshigh-performance toolingmilitary ordnance applications

Compliance & Regulations

?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)	28.00	-	—
Ultimate Tensile Strength(σUTS)	1.109	GPa	—
Yield Strength (0.2% offset)(σy)	1.006	GPa	—

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Regulatory Screening

Environmental

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.