B4W

metal

· B4W

B4W is a boron-tungsten composite or alloy belonging to the refractory metal family, designed for extreme-temperature and high-strength applications. This material is used primarily in aerospace, nuclear, and specialized manufacturing sectors where thermal stability and hardness are critical—such as in rocket nozzles, reactor components, and cutting tools. Its tungsten base combined with boron reinforcement makes it notable for maintaining strength at elevated temperatures and resisting thermal shock better than many conventional superalloys.

rocket nozzles and re-entry componentsnuclear reactor internalshigh-temperature cutting toolsaerospace engine componentsrefractory applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3365	lb/in³	—

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

Property	Unit	Conditions
Band Gap(Eg)2 entries	eV	—
↳	eV	—
Magnetic Moment(μB)	µB	—

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)	0.6357	eV/atom	—
Formation Energy(ΔHf)	0.3501	eV/atom	—

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.

B4W

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control