KYBe2

ceramic

· JVASP-70082· KYBe2

KYBe2 is a beryllium-based ceramic compound that belongs to the family of beryllide ceramics, characterized by high stiffness and low density. This material is primarily investigated for aerospace and defense applications where lightweight structural components with high elastic modulus are critical, such as in satellite components, optical systems, and thermal management structures. KYBe2 represents an advanced ceramic option for engineers seeking alternatives to metals in extreme-environment applications, though its use remains largely specialized due to beryllium's toxicity concerns and the material's relative brittleness compared to metallic beryllium alloys.

aerospace structuressatellite componentsoptical mirror substratesthermal conductorslightweight stiffenersadvanced ceramics research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	6,290.3	ksi	DFT · OptB88vdW
Shear Modulus(G)	-1,612.8	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1134	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.1740	eV	DFT · OptB88vdW
↳	0.1270	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	51.46	-	DFT · OptB88vdW
↳	91.60	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.3700	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.7100	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00289	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00302	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-236.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	340.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	5.840	%	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)	0.7625	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.7603	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.

KYBe2 — Properties & Data | MatWorld

KYBe2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental