B4OsW

metal

· JVASP-106138· B4OsW

B4OsW is a refractory metal compound combining boron, osmium, and tungsten—a research-phase material designed to exploit the exceptional hardness of borides and the thermal stability of heavy refractory metals. Materials in this family are investigated for extreme-environment applications where conventional superalloys reach their performance limits, though B4OsW remains largely experimental and lacks widespread industrial deployment.

high-temperature structural applicationsrefractory coatings and wear surfacesaerospace thermal protection researchultra-hard tooling (experimental)hypersonic vehicle components (developmental)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	12.26	kg/m³	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.06470	eV/atom	—
Formation Energy(ΔHf)	-0.2606	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.

B4OsW

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control