CuSnAu

metal

· JVASP-149337· CuSnAu

CuSnAu is a ternary copper-tin-gold alloy that combines the corrosion resistance and workability of copper with tin's strengthening effects and gold's nobility. This material class is primarily used in high-reliability electrical contacts, connectors, and decorative applications where corrosion resistance, wear resistance, and aesthetic properties are critical; the gold component ensures oxidation resistance while maintaining cost-effectiveness compared to pure gold systems.

electrical contacts and connectorsprecision wear surfacesdecorative plating systemsmarine/corrosive environment hardwarebonding wire and switching applicationslow-friction bearing surfaces

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.4040	lb/in³	—

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)	0.01620	eV/atom	—
Formation Energy(ΔHf)	-0.09977	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.

CuSnAu

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control