U4 Si4

semiconductor

· U4 Si4

U4Si4 is an intermetallic compound in the uranium-silicon system, representing a ceramic-like semiconductor material with potential applications in nuclear and advanced materials research. This compound belongs to the family of uranium silicides, which have been investigated for their thermal properties, radiation stability, and potential use as advanced nuclear fuels or cladding materials. While not widely commercialized, U4Si4 and related uranium silicides are of interest to nuclear engineers and materials scientists studying next-generation fuel concepts and materials capable of withstanding extreme in-pile conditions.

nuclear fuel developmentradiation-resistant materials researchhigh-temperature ceramicsadvanced reactor materialsmaterials science research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	15,169.4	ksi	—
Shear Modulus(G)	5,771.5	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00300	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.1430	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.

U4 Si4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control