BN
ceramic· BN
Boron nitride (BN) is a ceramic compound with a hexagonal crystal structure analogous to graphite, offering exceptional thermal stability, chemical inertness, and electrical insulation properties. It is widely used in high-temperature applications including crucibles for molten metal processing, thermal management components in electronics, and refractory coatings in aerospace engines. Engineers select BN when thermal conductivity combined with electrical insulation and oxidation resistance is critical, making it particularly valuable in semiconductor manufacturing, metal casting, and extreme-environment thermal barriers where conventional ceramics or oxides would fail or conduct unwanted electrical current.
High-temperature insulatorsCrucibles and refractory liningsThermal management in electronicsAerospace engine coatingsSemiconductor processing fixturesMolten metal containers
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 14,897.9 | ksi | — | ||
| ↳ | 35,509.6 | ksi | — | ||
| ↳ | 34,516 range 14,897.9–54,134.1median of 2 measurements | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 217.1 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Exfoliation Energy(Eexf) | 70.12 | meV/atom | — | ||
Poisson's Ratio(ν)2 entries | 0.2079 | - | — | ||
| ↳ | 0.2200 | - | — | ||
Shear Modulus(G)3 entries | 10,808.4 | ksi | — | ||
| ↳ | 25,744.2 | ksi | — | ||
| ↳ | 33,208.2 range 10,808.4–55,607.9median of 2 measurements | 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) | 0.08273 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 4.436 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 5.080 | - | — | ||
| ↳ | 6.622 | - | — | ||
| ↳ | 5.697 range 4.572–6.822median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.5177 | C/m² | — | ||
| ↳ | 0.000 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -347.5 | µV/K | — |
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 | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.00460 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -1.300 | eV/atom | — | ||
| ↳ | -1.384 | eV/atom | — |
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
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.