AlH3

Name: AlH3
Brand: MatWorld

metal

· AlH3

Aluminum hydride (AlH₃) is a lightweight metal hydride compound that exists primarily as a research material rather than a commercial engineering product. It is studied intensively as a potential hydrogen storage medium and as a precursor for aluminum-based materials, given its high hydrogen content by weight and density significantly lower than bulk aluminum. While not yet widely deployed in production applications, AlH₃ and related aluminum hydrides are of interest in aerospace, portable power systems, and chemical industries where compact hydrogen generation or storage is critical; its instability and reactivity with moisture have limited mainstream adoption, but ongoing materials research continues to explore stabilized forms and composite variants for future energy applications.

hydrogen storage researchaerospace propellant precursorportable power systemschemical synthesislightweight structural composites (experimental)defense/specialty applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	5,115.5	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.1500	-	DFT · OptB88vdW
Shear Modulus(G)	4,748.5	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.03858	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.464	eV	DFT · OptB88vdW
↳	3.731	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	12.46	-	DFT · OptB88vdW
↳	11.72	-	DFT · PBE
↳	8.658 range 5.023–12.29median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.348	-	DFT · OptB88vdW
↳	3.238	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.3300	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.963	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000627	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00326	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-90.96	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	459.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.4600	%	DFT · TBmBJ

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)	0.02720	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.07486	eV/atom	DFT · OptB88vdW
↳	-0.02954	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.

AlH3 — Properties & Data | MatWorld

AlH3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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