17.6Ni-1.8Mo Low Alloy Steel

metal

17.6Ni-1.8Mo is a precipitation-hardening low-alloy steel engineered for high-strength applications requiring excellent toughness and fatigue resistance. The high nickel content (17.6%) combined with molybdenum and titanium creates a martensitic matrix capable of age hardening, making it suitable for demanding structural and mechanical components that must withstand cyclic loading and impact without brittleness. This steel family is primarily used in aerospace, defense, and high-performance industrial equipment where weight reduction and reliability are critical—engineers select it over conventional carbon steels when applications demand the strength-to-weight ratio and fracture toughness that precipitation hardening provides.

aerospace structural componentshigh-strength fasteners and boltslanding gear and undercarriagedefense ordnance and pressure vesselsturbine and compressor casingsheavy-duty machinery shafts

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)	—	Pa	—	—
Yield Strength (0.2% offset)(σy)	—	Pa	—	—

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.