U4S3

Name: U4S3
Brand: MatWorld

ceramic

· U4S3

U4S3 is a uranium-based ceramic compound belonging to the uranium sulfide family, characterized by mixed-valence uranium chemistry typical of actinide materials. This material finds primary relevance in nuclear fuel research, advanced refractory applications, and fundamental materials science studying actinide behavior under extreme conditions. Its selection depends on specialized requirements for high-temperature stability, neutron interactions, or dense ceramic matrices where uranium-bearing phases are functionally necessary.

nuclear fuel researchhigh-temperature refractoriesactinide ceramicsradiation-resistant materialsadvanced nuclear materials testingdense ceramic matrices

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	15,297.1	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.4900	-	DFT · OptB88vdW
Shear Modulus(G)	4,104.6	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3952	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
↳	0.000	eV	Measured
Thermoelectric Power Factor(PF)2 entries	0.0000108	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000133	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-3.040	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-3.370	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.3139	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.9421	eV/atom	DFT · OptB88vdW

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

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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.

U4S3 — Properties & Data | MatWorld

U4S3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental