Co2B

metal

· Co2B

Co₂B is a cobalt boride intermetallic compound that forms as a hard, brittle phase in cobalt-based alloy systems. It is primarily encountered as a constituent in tool steels, wear-resistant coatings, and high-performance alloys rather than as a standalone material, where it contributes exceptional hardness and thermal stability. Engineers select cobalt borides for applications demanding resistance to abrasive wear, high-temperature oxidation, and mechanical impact; common alternatives include tungsten carbides and ceramic composites, though cobalt borides offer superior toughness in certain duty cycles.

wear-resistant tool coatingscutting tool insertsthermal barrier systemshigh-temperature alloysabrasive wear protectionresearch/specialty metallurgy

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	35,786.8	ksi	—
↳	38,319	ksi	—
Poisson's Ratio(ν)	0.3300	-	—
Shear Modulus(G)2 entries	15,081.6	ksi	—
↳	14,492.2	ksi	—

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
Density(ρ)	0.2958	lb/in³	—

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

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	—
Magnetic Moment(μB)	3.725	µB	—
Seebeck Coefficient(S)	-4.310	µV/K	—

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

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.03510	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.2011	eV/atom	—
↳	-0.2094	eV/atom	—

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

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.

Co2B

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control