0.05C 20.3Ni-1.2Mo Low Alloy Steel

metal

A high-nickel low-alloy steel containing approximately 20% nickel, 1.2% molybdenum, and 2.25% titanium with very low carbon content (0.05%), this material is engineered to provide exceptional strength-to-weight performance combined with corrosion and wear resistance. Historically used in aerospace landing gear, rocket motor casings, and high-strength fasteners where extreme reliability under cyclic loading and harsh environments is critical. The high nickel content and molybdenum additions create a material notable for maintaining toughness at cryogenic temperatures and resisting hydrogen embrittlement, making it preferred over conventional structural steels in applications involving liquefied propellants or high-pressure hydrogen service.

aerospace landing gearrocket motor caseshigh-strength fastenerscryogenic pressure vesselshydrogen service equipmentdefense ordnance

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.