HoB2 — Properties & Data | MatWorld

HoB2

Name: HoB2
Brand: MatWorld

ceramic

· HoB2

Holmium diboride (HoB₂) is a rare-earth metal boride ceramic compound that belongs to the hexaboride family of ultra-high-temperature ceramics. This material is primarily of research interest rather than established commercial production, valued for its potential in extreme thermal and chemical environments where conventional ceramics reach their limits. HoB₂ is notable among rare-earth borides for its refractory properties and potential applications in aerospace propulsion, nuclear systems, and high-temperature structural applications where thermal stability and resistance to oxidation are critical.

hypersonic vehicle componentsrocket nozzles and throatsnuclear reactor materialshigh-temperature cruciblesthermal protection systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3129	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	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000127	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000135	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-4.717	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-4.863	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

Filter by

Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.6397	eV/atom	DFT · OptB88vdW
↳	-0.2892	eV/atom	Measured

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

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.

HoB2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental