HfNb

metal

· JVASP-111051· HfNb

HfNb is a refractory metal alloy combining hafnium and niobium, designed to operate at extreme temperatures where conventional superalloys reach their limits. This material is primarily investigated for aerospace and nuclear applications requiring exceptional thermal stability, oxidation resistance, and strength retention at temperatures exceeding 1000°C. Its appeal lies in maintaining structural integrity in ultra-high-temperature environments where traditional nickel- or cobalt-based superalloys degrade, though it remains largely experimental and cost-prohibitive for widespread commercial use compared to established refractory systems.

hypersonic vehicle structuresnuclear reactor componentshigh-temperature turbine applicationsextreme environment researchrefractory alloy developmentaerospace propulsion systems

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	11.35	kg/m³	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.09780	eV/atom	—
Formation Energy(ΔHf)	0.09782	eV/atom	—

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.

HfNb

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control