PbO

ceramic

· PbO

Lead oxide (PbO) is an inorganic ceramic compound that exists primarily in two crystal forms (tetragonal and orthorhombic) and serves as a key precursor and functional component in ceramic systems. It is widely used in lead-based glass formulations, glazes, and frits for tableware and decorative ceramics, where it lowers melting temperature and improves melt fluidity, and also finds application in specialized electrical ceramics and historical pigment production. Engineers select PbO-based systems for their ability to densify ceramics at lower firing temperatures and to modify optical and dielectric properties, though regulatory restrictions on lead content in consumer-facing applications have limited its adoption in modern product design in many regions.

Lead glass and crystal formulationsCeramic glazes and fritsElectrical insulators and capacitorsHistorical pigments and colorantsHigh-temperature sealing glasses

Compliance & Regulations

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

Units:

Property OverviewNormalized to typical max values

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Method

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	4,403.3	ksi	DFT · OptB88vdW
Compressive Strength(σc)	45.51	ksi	—
Elongation at Break(εf)	4.090	%	—
Exfoliation Energy(Eexf)	70.33	meV/atom	DFT · OptB88vdW
Flexural Strength (MOR)(σf)	35.82	ksi	—
Poisson's Ratio(ν)	0.3300	-	DFT · OptB88vdW
Shear Modulus(G)	2,417.8	ksi	DFT · OptB88vdW
Ultimate Tensile Strength(σUTS)	146.3	ksi	—
Young's Modulus(E)	16,604.3	ksi	—

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Property	Value	Unit	Conditions	Source
Glass Transition Temperature(Tg)	278.5	°F	—
Melting Point / Solidus(Tm)	239	°F	—
Maximum Service Temperature(Tmax)	1,163.2	°F	—
Thermal Conductivity(k)	0.1506	BTU/(hr·ft·°F)	—

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Property	Value	Unit	Conditions	Source
Density(ρ)	0.3359	lb/in³	DFT · OptB88vdW

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Method

Property	Value	Unit	Conditions	Source
Band Gap(Eg)3 entries	2.484	eV	—
↳	2.203	eV	DFT · OptB88vdW
↳	2.819	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	231.4	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	5.915	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.00321	C/m²	DFT · OptB88vdW
↳	0.9915	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	6.840	%	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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Property	Value	Unit	Conditions	Source
Refractive Index(n)	2.387	-	—

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Method

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.01580	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-1.229	eV/atom	DFT · OptB88vdW
↳	-1.130	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.

PbO — Properties & Data | MatWorld