17Ni-8Co Maraging Steel

metal

17Ni-8Co maraging steel is a precipitation-hardened iron-nickel alloy engineered for ultra-high strength with retained toughness, achieved through aging heat treatment of a low-carbon martensitic matrix. This material is primarily used in aerospace and defense applications where weight savings and exceptional strength-to-weight ratio are critical, including missile casings, aircraft landing gear, and rocket motor cases; it is also employed in tooling and die applications where wear resistance and fatigue strength are essential. The cobalt and vanadium additions enhance strength and hardening response compared to standard 18Ni maraging grades, making this variant particularly attractive when maximum performance density is needed despite higher material and processing costs.

aerospace structuresmissile casingsrocket motor componentsaircraft landing gearhigh-performance tooling and diesfatigue-critical applications

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)	—	Pa	—	—
Yield Strength (0.2% offset)(σy)	—	Pa	—	—

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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.