B4C — Properties & Data | MatWorld

B4C

semiconductor

· B4C

Boron carbide (B₄C) is a hard ceramic compound belonging to the non-oxide ceramics family, known for its extreme hardness and chemical stability at high temperatures. It is widely used in abrasive applications, armor systems, and nuclear shielding, where its exceptional hardness and low density make it preferable to traditional alternatives like silicon carbide or tungsten carbide. Engineers select B₄C for applications requiring wear resistance combined with lightweight construction, particularly in ballistic protection and precision grinding where cost-performance balance is critical.

ballistic armor platesabrasive grinding medianuclear reactor control rodswear-resistant nozzlescutting tool compositeshigh-temperature structural ceramics

Compliance & Regulations

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

Units:

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	33,062.8	ksi	—
Poisson's Ratio(ν)	0.1900	-	—
Shear Modulus(G)	26,514.3	ksi	—

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

Property	Value	Unit	Conditions	Source
Thermal Conductivity(k)	17.33	BTU/(hr·ft·°F)	—

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.08931	lb/in³	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)2 entries	1.640	eV	—
↳	1.660	eV	—
Magnetic Moment(μB)	0.000	µB	—
Seebeck Coefficient(S)	-364.8	µV/K	—

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)	0.03690	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.1299	eV/atom	—
↳	-0.05383	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.