5.2Cr-1.7Mo-11.0Ni Low Alloy Steel

metal

5.2Cr-1.7Mo-11.0Ni is a precipitation-hardening low-alloy steel designed to achieve very high strength through age-hardening heat treatment, combining chromium and molybdenum for hardenability with substantial nickel content for toughness and corrosion resistance. This material is primarily used in aerospace and defense applications where both extreme strength and damage tolerance are critical—particularly in landing gear, fasteners, and structural components that must survive high-cycle fatigue and occasional impact. The high nickel and chromium content also provides good corrosion resistance compared to conventional steels, making it suitable for environments with salt spray or chemical exposure, while the controlled molybdenum level ensures through-hardening without excessive brittleness.

aircraft landing gearhigh-strength fastenersaerospace structural componentsdefense applicationsfatigue-critical hardwarecorrosion-resistant high-strength parts

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	—	—

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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.