HfAu3

metal

· HfAu3

HfAu3 is an intermetallic compound composed of hafnium and gold, belonging to the class of high-density metallic materials with ordered crystal structures. This material is primarily of research and specialized industrial interest rather than a commodity alloy, valued for applications requiring extreme density, high-temperature stability, or unique electronic properties that arise from hafnium-gold interactions. Its use is limited to niche aerospace, high-performance electronics, and materials research applications where the cost and scarcity of gold can be justified by performance requirements.

aerospace thermal barriershigh-density radiation shieldingintermetallic research compoundsspecialized electronics contactshigh-temperature coatingsmaterials science studies

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	17.50	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
Energy Above Hull(ΔEhull)	0.000	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.5676	eV/atom	—
↳	-0.5083	eV/atom	—

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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.

HfAu3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control