SnAu5

metal
· SnAu5

SnAu5 is a tin-gold intermetallic compound representing a high-density metallic alloy system that combines tin and gold in a fixed stoichiometric ratio. This material is primarily of research and specialized industrial interest, used in applications requiring specific thermomechanical properties such as solder joint reliability, electronic interconnections, and microelectronic packaging where tin-gold systems offer superior performance over conventional solder materials. The tin-gold family is valued in high-reliability electronics for its resistance to thermal cycling fatigue and whisker mitigation compared to pure tin, making it relevant where extreme thermal cycling or miniaturized interconnects demand exceptional durability.

electronic solder jointsmicroelectronic packaginghigh-reliability interconnectsthermal cycling applicationsspace and aerospace electronicsresearch intermetallic compounds

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)2 entries
16,714.5
ksi—
↳
16,591.7
ksi—
Elastic Compliance Tensor(Sij)
Matrix (redacted)
1/GPa—
Elastic Anisotropy(AU)
0.4930
-—
Elastic Stiffness Tensor(Cij)
Matrix (redacted)
ksi—
Poisson's Ratio(ν)
0.4259
-—
Shear Modulus(G)2 entries
2,607.6
ksi—
↳
2,653.1
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
PropertyValueUnitConditionsSource
Density(ρ)
0.5834
lb/in³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
0.000
eV—
Magnetic Moment(μB)
0.000
µB—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.02250
eV/atom—
Formation Energy(ΔHf)2 entries
-0.06010
eV/atom—
↳
-0.03546
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.