SiC — Properties & Data | MatWorld

SiC

ceramic

· SiC

Silicon carbide (SiC) is a hard ceramic compound formed from silicon and carbon, known for exceptional hardness, thermal stability, and chemical resistance across a wide temperature range. It is widely used in demanding high-temperature and high-stress applications including semiconductor devices, refractory linings in furnaces and kilns, abrasive grinding media, and structural components in aerospace and automotive engines where thermal shock resistance and lightweight strength are critical. SiC is preferred over alumina and other traditional ceramics in applications requiring superior thermal conductivity combined with mechanical strength, making it essential in next-generation power electronics, electric vehicle components, and extreme-environment engineering.

power electronics and semiconductorsturbine and engine componentsrefractory liningsthermal management systemsabrasive and cutting toolsaerospace structural applications

Compliance & Regulations

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

Units:

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)3 entries	213.1	GPa	—
↳	211.4	GPa	—
↳	213.3	GPa	—
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	—
Elastic Anisotropy(AU)	0.1192	-	—
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	Pa	—
Poisson's Ratio(ν)2 entries	0.1608	-	—
↳	0.1600	-	—
Shear Modulus(G)3 entries	186.8	GPa	—
↳	186.9	GPa	—
↳	190.7	GPa	—

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
Thermal Conductivity(k)	372	W/(m·K)	—

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.153	kg/m³	—

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Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.273	eV	—
Dielectric Constant (Relative Permittivity)(εr)3 entries	10.36	-	—
↳	10.68	-	—
↳	9.198 range 7.233–11.36median of 4 measurements	-	—
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	—
Total Dielectric Tensor(ε)	Matrix (redacted)	-	—
Magnetic Moment(μB)	0.000	µB	—
Piezoelectric Modulus(eij)2 entries	0.08380	C/m²	—
↳	0.9792	C/m²	—
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	—
Seebeck Coefficient(S)	-176.5	µV/K	—

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)	0.000400	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.3794	eV/atom	—
↳	-0.2438	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

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.