NpCr2Si2

metal

· JVASP-4774· NpCr2Si2

NpCr₂Si₂ is an intermetallic compound combining neptunium, chromium, and silicon, belonging to the rare earth and actinide silicide family. This material is primarily a research-phase compound studied for its potential in advanced nuclear applications and high-temperature structural uses where exceptional stiffness and thermal stability are required. The inclusion of neptunium (a transuranic element) limits its practical deployment to specialized nuclear research facilities and theoretical materials development programs rather than conventional industrial manufacturing.

nuclear fuel cladding researchactinide metallurgy studieshigh-temperature structural materialsadvanced reactor conceptsmaterials science researchrefractory intermetallics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	21,014.5	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3500	-	DFT · OptB88vdW
Shear Modulus(G)	5,927.7	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3039	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
Magnetic Moment(μB)	3.988	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00111	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00112	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-30.02	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-30.19	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)	0.1157	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.1724	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.

NpCr2Si2 — Properties & Data | MatWorld

NpCr2Si2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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