0.05C 8.4Cr-1.8Mo-11.5Ni Low Alloy Steel

metal

This is a precipitation-hardening martensitic stainless steel combining high chromium (8.4%), nickel (11.5%), and molybdenum (1.8%) content with very low carbon (0.05%), designed to achieve high strength while maintaining reasonable toughness and corrosion resistance. It is used in aerospace and defense applications where components must withstand extreme stress in corrosive or cryogenic environments—such as landing gear, fasteners, and structural fittings in aircraft and missiles. The high nickel and molybdenum content improves toughness compared to conventional martensitic stainless steels, while the low carbon and careful alloying reduce hydrogen embrittlement risk, making it preferred for critical load-bearing parts where both strength and damage tolerance are essential.

aerospace fastenersaircraft landing gearmissile componentscryogenic servicehigh-strength structural partscorrosion-resistant fasteners

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.