BeS2

ceramic

· JVASP-117698· BeS2

BeS2 is an experimental beryllium sulfide ceramic compound that belongs to the II-VI semiconductor/ceramic material family. While not widely commercialized, beryllium chalcogenides are of research interest for specialized optoelectronic and high-performance ceramic applications due to beryllium's low density and high stiffness combined with sulfide's semiconducting properties. This material would be considered by engineers exploring lightweight, high-stiffness ceramics for niche aerospace, thermal management, or wide-bandgap semiconductor device applications, though its toxicity hazards during handling and processing present significant practical constraints.

research/experimental ceramicswide-bandgap semiconductorslightweight structural ceramicsoptoelectronic substratesaerospace prototype materialsthermal management components

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	5,444.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3100	-	DFT · OptB88vdW
Shear Modulus(G)	3,067.5	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.07645	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.039	eV	DFT · OptB88vdW
↳	1.881	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	9.185	-	DFT · OptB88vdW
↳	6.367	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	25.58	%	DFT · TBmBJ

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)	0.2909	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5661	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

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.

BeS2 — Properties & Data | MatWorld

BeS2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental