BeCu4Sn

metal

· JVASP-67838· BeCu4Sn

BeCu4Sn is a beryllium-copper-tin alloy that belongs to the family of high-strength copper-based materials, combining the exceptional stiffness and electrical conductivity of beryllium copper with tin additions for enhanced wear resistance and damping characteristics. This alloy is found in precision mechanical components, electrical connectors, and spring applications where a combination of high strength, excellent fatigue resistance, and controlled electrical properties is required. The tin addition typically improves machinability and reduces galling compared to standard beryllium-copper alloys, making it particularly valuable in applications demanding tight tolerances and repeated mechanical cycling.

precision electrical connectorsspring elements and fastenersbearing cages and bushingsautomotive suspension componentstelecommunications switching contactshigh-cycle fatigue applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2773	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)	0.2317	eV/atom	—
Formation Energy(ΔHf)	0.1879	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.

BeCu4Sn

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control