ErCrB4 — Properties & Data | MatWorld

ErCrB4

metal

· JVASP-38014· ErCrB4

ErCrB4 is an intermetallic compound combining erbium, chromium, and boron, belonging to the rare-earth boride family of materials. This compound is primarily of research and development interest for its potential in high-temperature structural applications, where rare-earth borides are studied for exceptional hardness and thermal stability. ErCrB4 represents an emerging material system with limited commercial deployment, positioned in the broader context of advanced ceramics and intermetallics being explored for extreme-environment engineering where conventional superalloys reach their performance limits.

High-temperature structural materials (research)Wear-resistant coatingsAdvanced ceramics developmentRefractory applicationsMaterials for extreme environmentsRare-earth intermetallic research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	7.566	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.2690	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	42.65	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.00333	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.00333	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000592	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00121	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-178.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	142	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.6969	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

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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.

ErCrB4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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