HfNbB2

metal

· JVASP-99659· HfNbB2

HfNbB2 is a refractory metal boride compound combining hafnium, niobium, and boron, belonging to the family of ultra-high-temperature ceramics and intermetallic materials. This material is primarily investigated in research and advanced development contexts for extreme-environment applications where conventional superalloys reach their thermal limits. It is notable for its potential in aerospace propulsion systems, hypersonic vehicles, and thermal protection applications where exceptional high-temperature strength and oxidation resistance are critical, though industrial deployment remains limited compared to established alternatives like tungsten-based alloys or yttria-stabilized zirconia.

hypersonic vehicle structuresrocket nozzle componentsrefractory coatingshigh-temperature propulsion systemsthermal protection systemsultra-high-temperature research applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3582	lb/in³	—

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)	0.02220	eV/atom	—
Formation Energy(ΔHf)	-0.7353	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.

HfNbB2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control