HfW

metal

· JVASP-123775· HfW

HfW is a refractory metal alloy combining hafnium and tungsten, belonging to the ultra-high-temperature material family. This composition is primarily investigated in aerospace and materials research contexts for extreme thermal environments where conventional superalloys reach their limits. The hafnium-tungsten system is notable for its potential to maintain structural integrity at temperatures exceeding those of nickel or cobalt-based alternatives, making it relevant for next-generation rocket engines, hypersonic vehicle structures, and nuclear applications where weight and performance trade-offs favor refractory metals over traditional options.

rocket engine nozzleshypersonic re-entry structuresnuclear reactor componentshigh-temperature cruciblesaerospace research applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	16.10	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)	0.9744	eV/atom	—
Formation Energy(ΔHf)	0.6960	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.

HfW

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control