NpP3

ceramic

· JVASP-30446· NpP3

NpP3 is a ceramic compound based on neptunium phosphide, belonging to the actinide phosphide family of advanced ceramics. This material exhibits strong elastic properties and high density, making it of interest in nuclear materials research and specialized high-performance applications where radiation resistance and thermal stability are critical requirements. As a research compound, NpP3 represents the broader potential of actinide ceramics for extreme-environment applications, though its use remains largely limited to scientific investigation and specialized nuclear-related engineering contexts.

nuclear materials researchactinide ceramicsradiation-resistant applicationshigh-temperature structural materialsadvanced fuel development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	14,847.5	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2200	-	DFT · OptB88vdW
Shear Modulus(G)	10,645.8	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2983	lb/in³	DFT · OptB88vdW

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

Filter by

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	0.00282	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00281	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	25.02	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	24.82	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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.04030	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5092	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

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.

NpP3 — Properties & Data | MatWorld

NpP3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental