5.6Cr-1.9Mo-9.8Ni Low Alloy Steel

metal

5.6Cr-1.9Mo-9.8Ni is a low-alloy steel engineered for high-strength applications requiring good toughness and fatigue resistance, achieved through careful balance of chromium (corrosion and wear resistance), molybdenum (strength and hardness), and nickel (ductility and impact toughness). Primarily used in aerospace landing gear, high-performance automotive components, and heavy-duty machinery requiring both strength and damage tolerance. This composition is notable for maintaining reliable performance in cyclically loaded or shock-prone environments where brittle failure must be avoided, making it preferable to higher-carbon martensitic steels in applications where impact resistance and fatigue life are critical.

aerospace landing gearhigh-strength fastenersautomotive suspension componentsgun barrels and ordnancehigh-performance bearingsfatigue-critical machinery

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)	19.00	-	—
Ultimate Tensile Strength(σUTS)	1.019	GPa	—
Yield Strength (0.2% offset)(σy)	1.019	GPa	—

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.