HfAu9

metal

· JVASP-101462· HfAu9

HfAu9 is an intermetallic compound in the hafnium–gold system, representing a specific stoichiometric phase combining a refractory metal (hafnium) with a noble metal (gold). This material is primarily of research and development interest rather than established industrial production, with potential applications leveraging the combined properties of high-temperature stability from hafnium and corrosion resistance from gold.

High-temperature coatingsContact materialsWear-resistant surfacesSpecialty alloy researchElectronics interconnectsCorrosion-resistant applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	17.91	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)	0.01480	eV/atom	—
Formation Energy(ΔHf)	-0.2028	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.

HfAu9

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control