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
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 38,264 | ksi | — | ||
| ↳ | 38,063.7 | ksi | — | ||
Poisson's Ratio(ν) | 0.2100 | - | — | ||
Shear Modulus(G)2 entries | 28,643 | ksi | — | ||
| ↳ | 27,750.1 | ksi | — |
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.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.2673 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -22.66 | µV/K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.7278 | eV/atom | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
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.