ZrSiO4

ceramic

· ZrSiO4

Zirconium silicate (ZrSiO₄) is a ceramic compound combining zirconium oxide and silica, forming a hard, refractory material valued for its thermal stability and chemical inertness. It is widely used in industrial applications requiring resistance to high temperatures, corrosion, and thermal shock, particularly in foundry operations, kiln linings, and specialized refractories. Engineers select ZrSiO₄ over alternative refractories where superior thermal conductivity combined with mechanical rigidity is needed without the risk of silica polymorphic inversion, making it especially relevant for precision casting molds and high-performance kiln applications.

refractory liningsinvestment casting moldskiln and furnace wallsfoundry applicationshigh-temperature ceramicsthermal shock resistance

Compliance & Regulations

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

Units:

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Method

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)2 entries	33,290.5	ksi	DFT · OptB88vdW
↳	29,515.1	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	1.018	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.2800	-	DFT · OptB88vdW
↳	0.2967	-	DFT · PBE
Shear Modulus(G)2 entries	17,743.9	ksi	DFT · OptB88vdW
↳	13,884.1	ksi	DFT · PBE

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)	4.622	BTU/(hr·ft·°F)	Measured

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Property	Value	Unit	Conditions	Source
Density(ρ)	0.1865	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions	Source
Band Gap(Eg)2 entries	4.701	eV	DFT · OptB88vdW
↳	5.192	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	8.393 range 4.159–12.63median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.141	-	DFT · OptB88vdW
↳	3.629	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00149	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00128	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-457.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	349.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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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Method

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.1639	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-3.183	eV/atom	DFT · OptB88vdW
↳	-3.496	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

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.

ZrSiO4 — Properties & Data | MatWorld