NpB2 — Properties & Data | MatWorld

NpB2

ceramic

· JVASP-20071· NpB2

NpB2 is a neptunium diboride ceramic compound, part of the refractory metal boride family known for extreme hardness and thermal stability. This material is primarily of research and specialized defense/nuclear applications interest rather than mainstream commercial use, as neptunium is an actinide element requiring controlled handling. The diboride ceramic structure offers potential for ultra-high-temperature applications and neutron-absorbing components in nuclear environments where its unique nuclear properties combined with ceramic rigidity could provide advantages over conventional refractory materials.

nuclear reactor componentsresearch refractory materialsactinide ceramicsextreme temperature applicationsneutron shielding studiesdefense/specialized applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	190.2	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.1600	-	DFT · OptB88vdW
Shear Modulus(G)	172.8	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	12.83	kg/m³	DFT · OptB88vdW

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Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
Magnetic Moment(μB)	2.358	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.0000152	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000154	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-2.577	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-2.597	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5309	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.

NpB2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental