Al1 Cu3

semiconductor
· Al1 Cu3

Al₁Cu₃ is an intermetallic compound in the aluminum-copper system, classified as a semiconductor material with a defined stoichiometric composition. This phase represents a brittle intermetallic rather than a conventional alloy, making it relevant primarily in research contexts exploring phase diagrams, electronic properties, or high-temperature structural applications where controlled microstructures are engineered into aluminum-copper alloys. While rarely used as a bulk material due to brittleness, understanding this phase is important for controlling precipitation hardening in commercial aluminum-copper alloys (such as 2000-series aluminum alloys used in aerospace), where controlled formation of copper-rich phases strengthens the matrix.

aluminum-copper phase engineeringprecipitation-hardened alloy developmentsemiconductor researchintermetallic structure studieshigh-temperature composite reinforcementmaterials science research

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)
128.6
GPa—
Shear Modulus(G)
57.08
GPa—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
0.00270
eV—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Formation Energy(ΔHf)
-0.1580
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.