Hf9CoW4

metal

· JVASP-142256· Hf9CoW4

Hf9CoW4 is a refractory high-entropy alloy based on hafnium, cobalt, and tungsten, designed for extreme-temperature applications where conventional superalloys reach their performance limits. This material family is primarily investigated for aerospace propulsion systems, nuclear reactors, and ultra-high-temperature structural applications where superior creep resistance and thermal stability are critical; the multi-principal-element composition aims to achieve exceptional strength retention at temperatures where single-phase superalloys degrade, making it a candidate for next-generation engine turbines and hypersonic vehicle components.

high-temperature turbine bladesaerospace propulsion systemsnuclear reactor componentsrefractory applicationshypersonic vehicle structuresextreme-temperature research materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	14.53	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)	0.2189	eV/atom	—
Formation Energy(ΔHf)	-0.00786	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.

Hf9CoW4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control