Al4C3

Name: Al4C3
Brand: MatWorld

metal

· Al4C3

Aluminum carbide (Al₄C₃) is an intermetallic ceramic compound formed from aluminum and carbon, belonging to the family of refractory carbides. It is primarily encountered as an unwanted byproduct in aluminum metallurgy and composites manufacturing, though it has potential applications in specialized high-temperature and wear-resistant contexts. The material is notable for its chemical reactivity—particularly its reaction with moisture—which makes it a research focus for understanding interfacial degradation in aluminum-carbon composite systems and for developing protective coating strategies.

aluminum composite reinforcementrefractory materials researchhigh-temperature interfaceswear-resistant coatingscarbide phase controlmaterials degradation studies

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1074	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.527	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)3 entries	19.06	-	DFT · OptB88vdW
↳	17.83	-	DFT · PBE
↳	12.97 range 8.449–17.49median of 2 measurements	-	DFT · PBEsol
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00368	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00170	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-222	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	328.7	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.

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.4351	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)3 entries	0.1912	eV/atom	DFT · OptB88vdW
↳	-0.1897	eV/atom	Measured
↳	-0.3193	eV/atom	Measured

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

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

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.

Al4C3 — Properties & Data | MatWorld

Al4C3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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