AlAu2
metal· AlAu2
AlAu2 is an intermetallic compound combining aluminum and gold in a 1:2 stoichiometric ratio, forming a brittle metallic phase with high density. While not widely used in commodity applications, this material belongs to the Al-Au intermetallic family that has been explored in jewelry alloys, wear-resistant coatings, and specialized bonding applications where gold's nobility and aluminum's light weight offer complementary benefits. The compound's notable elastic anisotropy and relatively high stiffness make it of primary interest to materials researchers investigating phase stability and mechanical behavior in precious-metal systems, rather than to general engineering practice.
jewelry alloys and decorative applicationswear-resistant coatingsmicroelectronic bonding layersmaterials research (intermetallics)thermal management interfaces
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 118.4 | GPa | — | ||
| ↳ | 118.4 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.4126 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Poisson's Ratio(ν) | 0.3748 | - | — | ||
Shear Modulus(G)2 entries | 32.35 | GPa | — | ||
| ↳ | 32.35 | GPa | — |
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) | 13.67 | kg/m³ | — |
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 | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.3351 | 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.