0.05C 5.2Cr-1.8Mo-11.7Ni Low Alloy Steel (var. 2)

metal

This is a precipitation-hardened nickel-chromium-molybdenum low-alloy steel with controlled carbon content, aluminum, and trace refractory elements (Ti, V, Nb). The composition—particularly the high nickel (11.7%) and chromium (5.2%) with molybdenum strengthening—positions it in the family of ultra-high-strength aerospace and defense alloys, where it is engineered to deliver high yield strength with retained toughness and fatigue resistance. Applications span critical load-bearing structural components in aerospace (landing gear, fasteners, pressure vessels), military ordnance, and high-performance industrial equipment where weight efficiency and damage tolerance under cyclic loading are essential; this material family is valued over commodity hardened steels when superior corrosion resistance and reliability in extreme service conditions justify the cost.

aerospace fasteners and structural componentslanding gear and undercarriagehigh-strength pressure vesselsmilitary ordnance and defense systemsfatigue-critical machine components

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.