ZrB2 — Properties & Data | MatWorld

ZrB2

metal

· ZrB2

Zirconium diboride (ZrB2) is an ultra-high-temperature ceramic compound belonging to the transition metal diboride family, characterized by exceptional thermal and mechanical stability at extreme temperatures. It is primarily used in aerospace and defense applications, including hypersonic vehicle leading edges, rocket nozzles, and thermal protection systems, where its combination of high-temperature strength retention and oxidation resistance outperforms conventional refractory materials. Engineers select ZrB2 when operating environments exceed 2000°C, as it maintains structural integrity and resists degradation where standard superalloys fail, though its brittle nature and manufacturing complexity require careful design and processing consideration.

hypersonic vehicle componentsrocket nozzles and throatsthermal protection systemsrefractory liningshigh-temperature cutting toolsaerospace heat shields

Compliance & Regulations

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

Units:

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Method

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)2 entries	34,509.3	ksi	DFT
↳	34,418.9	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.1400	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	32,822.3	ksi	DFT
↳	33,186.1	ksi	DFT · OptB88vdW

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
Thermal Conductivity(k)	42.18	BTU/(hr·ft·°F)	Measured

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2178	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions	Source
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	Measured
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00326	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00340	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-28.91	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-30.17	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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Method

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-1.008	eV/atom	DFT · OptB88vdW
↳	-1.114	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

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.