CoB3W3 — Properties & Data | MatWorld

CoB3W3

metal

· JVASP-24610· CoB3W3

CoB3W3 is a cobalt-tungsten boride compound, part of the refractory metal boride family known for extremely high hardness and thermal stability. This material is primarily of research and specialized industrial interest, valued in applications requiring exceptional wear resistance and thermal shock tolerance where conventional cemented carbides or ceramics fall short. Its high density and hardness characteristics make it relevant for cutting tools, abrasive applications, and high-temperature structural components, though limited commercial availability and processing complexity mean adoption remains restricted to demanding niche applications rather than mainstream use.

Refractory cutting toolsWear-resistant coatingsHigh-temperature applicationsAbrasive materialsResearch/specialty alloysHardened tool inserts

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.5275	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000133	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000186	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	7.927	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	9.663	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)	0.1169	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.3923	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

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.

CoB3W3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control