NpAl4 — Properties & Data | MatWorld

NpAl4

metal

· JVASP-22741· NpAl4

NpAl₄ is an intermetallic compound in the neptunium-aluminum system, representing a research-grade actinide material with potential applications in nuclear fuel development and advanced metallurgical studies. This compound belongs to the broader family of actinide intermetallics, which are primarily investigated in laboratory and specialized nuclear contexts rather than conventional engineering applications. Materials in this class are notable for their unique nuclear properties and extreme processing requirements, making them significant primarily to nuclear materials scientists and specialized defense or energy research programs.

nuclear fuel researchactinide metallurgyadvanced materials characterizationnuclear weapons complex applicationshigh-energy physics researchmaterial phase diagram studies

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2264	lb/in³	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
Thermoelectric Power Factor(PF)2 entries	0.00270	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00269	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	52.99	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	52.83	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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.1242	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.03737	eV/atom	DFT · OptB88vdW

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

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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.

NpAl4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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