Hf9W4S

metal

· JVASP-119631· Hf9W4S

Hf9W4S is a hafnium-tungsten sulfide compound that belongs to the refractory metal sulfide family, combining two of the highest melting-point metallic elements with sulfur. This material is primarily of research and development interest rather than established industrial production, with potential applications in extreme-temperature environments and specialized coatings where conventional alloys reach their limits. Engineers would consider this material for ultra-high-temperature applications or as a matrix phase in composite systems, though its practical use remains limited by processing challenges and the relative maturity of competing refractory solutions.

high-temperature coatingsrefractory materials researchextreme environment protectionaerospace thermal barriersadvanced ceramics development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.5103	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)	0.2525	eV/atom	—
Formation Energy(ΔHf)	-0.1427	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.

Hf9W4S

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control