0.05C 17.3Ni-1.8Mo Low Alloy Steel

metal

A low-carbon, nickel-molybdenum maraging steel designed for ultra-high-strength applications requiring excellent toughness and dimensional stability. This material combines very low carbon content (~0.05%) with substantial nickel (17.3%) and molybdenum (1.8%) additions, along with controlled amounts of vanadium and titanium, to achieve an age-hardenable microstructure with minimal distortion during heat treatment. It is widely used in aerospace, defense, and precision engineering where weight reduction, repeatability, and resistance to fatigue and stress-corrosion cracking are critical; maraging steels of this composition represent an established alternative to tool steels and precipitation-hardened superalloys when designers need the combination of very high strength with superior toughness and machinability.

aerospace structural componentsrocket motor casingsmissile bodies and warheadshigh-performance tooling and dieslanding gear and fastenersprecision machine components

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.