Al4Si

metal

· JVASP-109791· Al4Si

Al4Si is an aluminum-silicon intermetallic compound representing a stoichiometric phase in the Al-Si binary system. This material is primarily of research and metallurgical interest, appearing in cast aluminum-silicon alloys where it forms as a constituent phase during solidification; it is not typically used as a standalone engineering material in structural applications. Engineers encounter Al4Si mainly in the context of understanding microstructure development in commercial Al-Si casting alloys (such as A356 or A380), where controlling its formation and morphology can influence mechanical properties and casting quality.

aluminum casting microstructure controlmetallurgical research and phase studieshigh-silicon aluminum alloysintermetallic phase analysiscasting defect mitigation

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.767	kg/m³	—

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)	0.1216	eV/atom	—
Formation Energy(ΔHf)	0.1206	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.

Al4Si

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control