Silicon Carbide (SiC)

Name: Silicon Carbide (SiC)
Brand: MatWorld

Verifiedsemiconductor

· SiC· Silicon Carbide· 4H-SiC· Carborundum

Silicon carbide (SiC) is a ceramic compound combining silicon and carbon in a 1:1 ratio, engineered as a wide-bandgap semiconductor with exceptional hardness and thermal stability. It is widely deployed in high-temperature power electronics (MOSFETs and Schottky diodes), abrasive applications, refractories for furnace linings, and emerging automotive/renewable energy inverters where its superior thermal conductivity and thermal shock resistance outperform traditional silicon. Engineers select SiC over conventional semiconductors when operating environments exceed 200°C or when high switching frequencies and power density are critical, though cost and manufacturing maturity remain considerations relative to established Si technology.

High-temperature power electronicsElectric vehicle invertersIndustrial furnace liningsAbrasive grinding wheelsFast-switching RF/microwave devicesRenewable energy converters

Compliance & Regulations

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

Units:

si imperial

Property OverviewNormalized to typical max values

Property	Value	Unit	Conditions
Hardness (Vickers)(HV)	2,600	HV	—
Poisson's Ratio(ν)	0.2100	-	—
Young's Modulus(E)	59,465.5	ksi	—

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3 interactive curves for this material

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Method

Property	Value	Unit	Conditions
Melting Point / Solidus(Tm)	5,119.9	°F	—
Specific Heat Capacity(Cp)	0.1648	BTU/(lb·°F)	—
Thermal Conductivity(k)	214.9	BTU/(hr·ft·°F)	Measured
Thermal Conductivity vs Temperature(k(T))3 entries	Curve (7 pts)	BTU/(hr·ft·°F)	—
↳	Curve (14 pts)	BTU/(hr·ft·°F)	Measured · single crystal
↳	Curve (21 pts)	BTU/(hr·ft·°F)	Measured · CVD polycrystalline (β-SiC)
Coefficient of Thermal Expansion(α (CTE))	2.222	µin/in·°F	—

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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Property	Value	Unit	Conditions	Source
Density(ρ)	0.1160	lb/in³	—

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	3.260	eV	—
↳	2.495	eV	DFT · OptB88vdW
↳	3.232	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	9.700	-	—
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.009	-	DFT · OptB88vdW
↳	6.086	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.4700	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.353	me	DFT · OptB88vdW · 27°C
Thermoelectric Power Factor(PF)2 entries	0.00346	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00181	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-233.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	291.4	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	2.660	%	DFT · TBmBJ

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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2 interactive curves for this material

Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.

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Property	Value	Unit	Conditions	Source
Refractive Index vs Wavelength(n(λ))2 entries	Curve (101 pts)	-	Measured · ordinary ray
↳	Curve (101 pts)	-	Measured · extraordinary ray

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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Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.3794	eV/atom	Measured

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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

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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.

Silicon Carbide (SiC) — Properties & Data | MatWorld

Silicon Carbide (SiC)

Mechanical Properties

Thermal Properties

Physical Properties

Electrical Properties

Optical Properties

Other Properties

Regulatory Screening

Environmental

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