HfAl — Properties & Data | MatWorld

HfAl

Name: HfAl
Brand: MatWorld

metal

· HfAl

HfAl is an intermetallic compound combining hafnium and aluminum, representing a high-performance metallic material with potential applications in extreme-temperature and high-strength environments. This material belongs to the refractory metal alloy family and is primarily investigated for aerospace, defense, and high-temperature structural applications where conventional alloys reach their performance limits. The hafnium-aluminum system offers the combination of hafnium's high melting point and density with aluminum's lightweight characteristics, making it of particular interest for next-generation engine components, hypersonic vehicle structures, and nuclear or space propulsion systems where thermal stability and specific strength are critical.

aerospace propulsion systemshigh-temperature structural componentsrefractory applicationshypersonic vehicle structuresspace exploration materialsadvanced engine components

Compliance & Regulations

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

Units:

si imperial

Filter by

Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	16,987.8	ksi	DFT
↳	16,937.5	ksi	DFT · OptB88vdW
↳	16,987.8	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.5123	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.2500	-	DFT · OptB88vdW
↳	0.2376	-	DFT · PBE
Shear Modulus(G)3 entries	10,804.1	ksi	DFT
↳	10,664.6	ksi	DFT · OptB88vdW
↳	10,804.1	ksi	DFT · PBE

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3243	lb/in³	DFT · OptB88vdW

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

Filter by

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000902	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000897	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	13.89	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	13.66	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.

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

Filter by

Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.00420	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.3953	eV/atom	DFT · OptB88vdW
↳	-0.4135	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

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.

HfAl

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control