HfAu — Properties & Data | MatWorld

HfAu

Name: HfAu
Brand: MatWorld

metal

· HfAu

HfAu is an intermetallic compound combining hafnium and gold, belonging to the refractory metal alloy family. This material is primarily of research and specialized industrial interest, valued for applications requiring excellent high-temperature stability, corrosion resistance, and the unique properties that arise from hafnium's refractory characteristics combined with gold's nobility. While not widely used in commodity applications, HfAu and similar hafnium-based intermetallics are explored in aerospace, electronics, and advanced catalysis where extreme thermal environments or chemical inertness justify the material cost.

high-temperature structural applicationsaerospace and jet engine componentselectronic contacts and interconnectscatalytic surfacesresearch compounds

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	146.0	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3100	-	DFT · OptB88vdW
Shear Modulus(G)	66.92	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	16.05	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000432	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000418	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	8.690	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	8.477	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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.

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.5768	eV/atom	DFT · OptB88vdW
↳	-0.5911	eV/atom	Measured

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

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

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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.

HfAu

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

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