NbB — Properties & Data | MatWorld

NbB

metal

· NbB

Niobium boride (NbB) is a refractory ceramic compound combining niobium metal with boron, belonging to the family of transition metal borides known for exceptional hardness and high-temperature stability. It is primarily investigated in research and advanced manufacturing contexts for applications requiring extreme wear resistance and thermal durability, particularly where conventional hard coatings or tool materials reach their performance limits. The material competes with titanium boride, tungsten carbide, and other refractory borides in specialized cutting, coating, and high-temperature structural applications.

refractory coatingscutting tool insertshigh-temperature wear protectionmetal boride researchaerospace thermal barriersextreme environment composites

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	38,264	ksi	DFT
↳	38,063.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2100	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	28,643	ksi	DFT
↳	27,750.1	ksi	DFT · OptB88vdW

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
Density(ρ)	0.2673	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)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00218	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00226	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-22.66	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-23.26	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.7278	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

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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.

NbB

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