7Ni-12Co Maraging Steel

metal

7Ni-12Co Maraging Steel is an iron-nickel-cobalt precipitation-hardened steel designed for ultra-high-strength applications requiring excellent toughness and dimensional stability. This grade combines high cobalt content (12.3%) with nickel and molybdenum additions to enable age-hardening without sacrificing ductility—a critical advantage over conventional high-strength steels that often become brittle. It is used in demanding aerospace, tooling, and precision manufacturing sectors where weight savings and reliability under shock or fatigue loading justify the premium material cost, and it is valued for applications requiring both strength and damage tolerance that cannot tolerate delayed cracking or stress-corrosion sensitivity.

aerospace structural forgingsrocket motor casesprecision die casting dieshelicopter rotor hubslanding gear componentshigh-performance tooling

Compliance & Regulations

?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	—	—

Verified Unverified Low confidence (<80%) Link to source

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.