0.09C 5.2Cr-1.9Mo-9.8Ni Low Alloy Steel

metal

A precipitation-hardening low-alloy steel containing high nickel (≈10%) and chromium (≈5%) with molybdenum and aluminum additions, designed for high-strength structural applications requiring corrosion and fatigue resistance. This composition family is used in aerospace landing gear, helicopter components, and high-performance automotive parts where a combination of strength, toughness, and environmental durability is critical. The high nickel content improves low-temperature impact resistance, while the chromium and molybdenum enhance corrosion resistance and hardenability—making it preferable to conventional medium-carbon steels in demanding aerospace and defense applications.

aerospace landing gearhelicopter rotor componentshigh-strength fastenersfatigue-critical structureslow-temperature servicecorrosion-resistant forgings

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)	14.00	-	—
Ultimate Tensile Strength(σUTS)	194.2	ksi	—
Yield Strength (0.2% offset)(σy)	189.2	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.