Hf9Mo4As

metal

· JVASP-60865· Hf9Mo4As

Hf9Mo4As is a hafnium-molybdenum-arsenic intermetallic compound belonging to the refractory metal alloy family. This is a research-phase material under investigation for ultra-high-temperature applications where exceptional thermal stability and hardness are required. The hafnium-molybdenum base provides intrinsic high-temperature strength, while the arsenic addition modifies the crystal structure and mechanical behavior; such ternary compositions are studied as candidates for aerospace thermal protection, advanced reactor systems, and extreme-environment structural components where conventional superalloys reach their limits.

refractory alloys researchultra-high-temperature structural applicationsaerospace thermal barriersadvanced nuclear systemsintermetallic compound developmentextreme environment materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.4414	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)	0.000	eV/atom	—
Formation Energy(ΔHf)	-0.2486	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.

Hf9Mo4As

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control