MgAl2O4
ceramic· MgAl2O4
Magnesium aluminate spinel (MgAl₂O₄) is a ceramic compound belonging to the spinel family, characterized by its cubic crystal structure and excellent thermal stability. It is widely used in high-temperature applications including refractories for furnace linings, kiln furniture, and crucibles, as well as in optical windows and transparent armor systems where its hardness and chemical inertness are valuable. Engineers select MgAl₂O₄ over alternatives like alumina when superior thermal shock resistance, low porosity, and dimensional stability at elevated temperatures are critical, or when optical clarity combined with mechanical strength is required.
refractory liningshigh-temperature furnace applicationskiln furnituretransparent armor/ballistic windowsoptical domeschemical crucibles
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 26,161.3 | ksi | — | ||
| ↳ | 26,161.3 | ksi | — | ||
| ↳ | 29,832.8 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 1.239 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.2744 | - | — | ||
| ↳ | 0.2500 | - | — | ||
Shear Modulus(G)3 entries | 13,896.3 | ksi | — | ||
| ↳ | 13,896.3 | ksi | — | ||
| ↳ | 19,523.5 | 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) | 9.245 | BTU/(hr·ft·°F) | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1391 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 5.568 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -95.77 | µV/K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.09030 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -3.404 | eV/atom | — | ||
| ↳ | -3.177 | 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.