ErCuSi

metal

· JVASP-16019· ErCuSi

ErCuSi is an intermetallic compound combining erbium, copper, and silicon, belonging to the rare-earth metal alloy family. This material is primarily of research and developmental interest, investigated for potential applications requiring the combined properties of rare-earth elements with transition metals—including enhanced mechanical strength, thermal stability, and specialized electromagnetic or magnetic properties. Engineers would consider this compound for advanced applications where rare-earth strengthening mechanisms or unique phase stability at elevated temperatures provide advantages over conventional engineering alloys, though commercial availability and cost typically limit deployment to specialized or prototype-stage projects.

rare-earth intermetallic compoundshigh-temperature structural applicationsresearch and development materialsmagnetic or electromagnetic devicesspecialty aerospace or defense prototypingmaterials with enhanced phase stability

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	14,983.8	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2500	-	DFT · OptB88vdW
Shear Modulus(G)	9,077.9	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2841	lb/in³	DFT · OptB88vdW

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

Filter by

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00105	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000977	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-24.33	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-22.91	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.6632	eV/atom	DFT · OptB88vdW

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

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.

ErCuSi — Properties & Data | MatWorld

ErCuSi

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control