Re5Si3

ceramic

· Re5Si3

Re5Si3 is an intermetallic ceramic compound belonging to the refractory silicide family, combining rhenium and silicon to form a hard, high-melting-point material. This material is primarily investigated in aerospace and high-temperature applications where extreme thermal stability and oxidation resistance are critical; it represents an advanced research compound rather than a widely commercialized material, positioned as a potential alternative to traditional tungsten silicides and molybdenum silicides for ultra-high-temperature structural components and thermal protection systems.

hypersonic vehicle componentsrocket nozzles and thrust chambersadvanced turbine applicationsthermal barrier coatingsrefractory cruciblesextreme environment research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.5477	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	—

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Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.1456	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.2038	eV/atom	—
↳	0.01388	eV/atom	—

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

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.

Re5Si3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental