AlN
metal· AlN
Aluminum nitride (AlN) is a wide-bandgap ceramic compound that combines metallic aluminum with nitrogen, forming a hexagonal crystal structure with exceptional thermal and electrical properties. It is widely used in high-power electronics, optoelectronics, and thermal management applications where efficient heat dissipation and electrical isolation are critical—particularly in RF power amplifiers, LED substrates, and integrated circuit packaging. Engineers select AlN over alternatives like alumina or silicon carbide when superior thermal conductivity paired with electrical insulation is needed in space-constrained or high-frequency applications.
RF power amplifiersLED thermal substratesIntegrated circuit packagingHigh-frequency electronicsThermal management ceramicsMicroelectronic device isolation
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 28,196.1 | ksi | — | ||
| ↳ | 28,196.1 | ksi | — | ||
| ↳ | 31,019.2 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.03437 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Exfoliation Energy(Eexf) | 499.2 | meV/atom | — | ||
Poisson's Ratio(ν)2 entries | 0.2413 | - | — | ||
| ↳ | 0.2500 | - | — | ||
Shear Modulus(G)3 entries | 17,626.6 | ksi | — | ||
| ↳ | 17,626.6 | ksi | — | ||
| ↳ | 19,690.3 | 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 | |
|---|---|---|---|---|---|
Thermal Conductivity(k) | 135.8 | BTU/(hr·ft·°F) | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1236 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 5.900 | eV | — | ||
| ↳ | 3.688 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 78.96 | - | — | ||
| ↳ | 11.26 range 5.103–17.43median of 2 measurements | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.2859 | C/m² | — | ||
| ↳ | 0.000 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -100.3 | 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) | 0.1269 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -1.648 | eV/atom | — | ||
| ↳ | -1.523 | 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
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.