Oxidized Zr-2.5Nb (Oxinium)

Verifiedmetal
· Oxinium· OXZR· Oxidized Zirconium

Oxidized Zr-2.5Nb (marketed as Oxinium) is a surface-hardened zirconium alloy created by controlled oxidation of a zirconium-niobium base metal, producing a ceramic oxide layer bonded to a ductile metallic substrate. This material is engineered specifically for bearing and articulating surfaces in orthopedic implants, where the hard oxide exterior minimizes wear and the tough underlying alloy provides damage tolerance. Compared to conventional cobalt-chromium or alumina-on-plastic combinations, Oxinium offers reduced wear rates and improved scratch resistance while maintaining the fracture toughness advantage of metallic substrates, making it particularly valuable in hip and knee replacements where long-term durability and low particulate generation are critical.

orthopedic implantship and knee replacementsbearing surfacesjoint articulationslow-wear applicationsbiomedical devices

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Elongation at Break(εf)
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Hardness (Vickers)(HV)
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HVnotes—
Poisson's Ratio(ν)
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Ultimate Tensile Strength(σUTS)
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ksi——
Yield Strength (0.2% offset)(σy)
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ksi——
Young's Modulus(E)
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ksi——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
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lb/in³——
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

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.
Oxidized Zr-2.5Nb (Oxinium) — Properties & Data | MatWorld