Hf4Al3

metal

· Hf4Al3

Hf4Al3 is an intermetallic compound combining hafnium and aluminum, belonging to the family of refractory metal aluminides. This material is primarily of research and development interest rather than established production use, with potential applications in high-temperature structural systems where the combination of hafnium's thermal stability and aluminum's lightweight characteristics could offer advantages over conventional superalloys or ceramic matrix composites.

high-temperature aerospace structuresrefractory intermetallic researchadvanced turbine component developmentthermal protection systemsmilitary/hypersonic applicationsmaterials science experimentation

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3556	lb/in³	—

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

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	—
↳	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—
Seebeck Coefficient(S)	7.723	µV/K	—

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
Energy Above Hull(ΔEhull)	0.000	eV/atom	—
Formation Energy(ΔHf)	-0.3843	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.

Hf4Al3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control