Sn4Au
metal· Sn4Au
Sn4Au is an intermetallic compound in the tin-gold system, representing a discrete phase that forms at specific composition ratios. This material belongs to a family of precious-metal intermetallics historically important in electronics and jewelry, though Sn4Au itself is primarily encountered in research contexts and as a phase constituent in lead-free solder systems and gold-tin bonding applications. Its notable characteristics stem from the combination of tin's low melting point with gold's chemical stability and conductivity, making it relevant where hermetic sealing, thermal management, or corrosion resistance in miniaturized assemblies is required.
die attach in semiconductor packaginggold-tin eutectic bondinglead-free solder researchhermetic seals for electronicshigh-reliability interconnectsresearch phase in phase diagrams
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | — | ksi | — | — | |
| ↳ | — | ksi | — | — | |
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | — | |
Elastic Anisotropy(AU) | — | - | — | — | |
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | — | |
Poisson's Ratio(ν) | — | - | — | — | |
Shear Modulus(G)2 entries | — | ksi | — | — | |
| ↳ | — | 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) | — | lb/in³ | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — | |
Magnetic Moment(μB) | — | µB | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | — | eV/atom | — | — | |
Formation Energy(ΔHf)2 entries | — | eV/atom | — | — | |
| ↳ | — | 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.