Cu3Si — Properties & Data | MatWorld

Cu3Si

Name: Cu3Si
Brand: MatWorld

metal

· Cu3Si

Cu3Si is an intermetallic compound in the copper-silicon system, representing a brittle metallic phase that forms at specific compositional ratios. While not commonly used as a primary structural material, Cu3Si appears in copper-silicon alloys as a secondary phase and has been studied in materials research for its hardening effects and role in precipitation-strengthened copper alloys. Its presence and behavior are relevant to engineers working with age-hardenable copper alloys or studying phase equilibria in multi-phase copper systems.

precipitation-hardened copper alloysphase strengthening researchelectrical contacts and connectorsthermal management materialsmetallurgical phase studies

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2677	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.02650	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	0.02528	eV/atom	DFT · OptB88vdW
↳	-0.06320	eV/atom	Measured

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, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

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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.

Cu3Si

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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