BaTiO3
BaTiO3 is a ferroelectric perovskite oxide with a very high dielectric constant, the base dielectric for multilayer ceramic capacitors and for semiconducting PTC thermistors.
Reference datasheet — BaTiO3 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the SINT condition
BaTiO3 tempers and conditions
BaTiO3 is supplied in 3 conditions, soft to hard. SINT is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Donor-doped semiconducting ceramic | Pick when a self-regulating heater or over-current protector is needed: resistivity jumps several decades above the doped Curie point. | 38 | 0.05 | 500 HV | 3 W/m·K | |
SINTDefault Sintered | Standard dense fired body for capacitor dielectrics, piezo discs and dielectric test parts. | 45 | 0.05 | 550 HV | 3 W/m·K | |
Single crystal | Use for photorefractive optics, domain-engineering research and reference dielectric/piezo measurements; expensive and small sizes only. | 55 | 0 | 600 HV | 5 W/m·K |
Supply forms, finishes and certifications
Ways BaTiO3 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
PWD | High-purity fine/nano powder | Supply form |
What is BaTiO3?
BaTiO3 is a ferroelectric perovskite oxide with a very high dielectric constant, the base dielectric for multilayer ceramic capacitors and for semiconducting PTC thermistors. It is supplied as calcined powder, tape-cast layers, pressed and sintered discs, doped PTC bodies and single crystal. Density is 5.9 g/cm³ and maximum service temperature 1000 °C. Permittivity is strongly dependent on temperature, bias and grain size around the Curie point, and the material is a functional rather than structural ceramic, so it is not used for load-bearing parts. BaTiO3 has a density of 5.9 g/cm³ (0.213 lb/in³), heavier than 63% of ceramic grades. It melts at 1,625°C (2,957 °F). BaTiO3 has a tensile strength of 45 MPa (6.53 ksi), weaker than 69% of ceramic grades. Elongation at break is 0.05% and the elastic modulus is 110 GPa (16 Msi).
What is BaTiO3 used for?
- MLCC capacitor dielectrics
- PTC thermistors
- piezoelectric transducers
- PTC heaters
Advantages
- Low embodied carbon — 5 kg CO₂/kg, better than 76% of ceramic grades
Limitations
- Low fracture toughness — 1 MPa·√m (0.91 ksi·√in), worse than 84% of ceramic grades
- Poor heat conductor — 3 W/m·K (1.73 BTU/hr·ft·°F), worse than 77% of ceramic grades
BaTiO3 properties
Typical room-temperature values for BaTiO3-SINT; bars are the position among ceramic grades.
Physical4
BaTiO3 has a density of 5.9 g/cm³ (0.213 lb/in³), heavier than 63% of ceramic grades. It melts at 1,625°C (2,957 °F).
Mechanical11
BaTiO3 has a tensile strength of 45 MPa (6.53 ksi), weaker than 69% of ceramic grades. Elongation at break is 0.05% and the elastic modulus is 110 GPa (16 Msi).
Thermal5
BaTiO3 is rated for continuous service to 1,000°C (1,832 °F). It conducts heat at 3 W/m·K (1.73 BTU/hr·ft·°F), worse than 77% of ceramic grades. Thermal expansion is 9 µm/m·K (5 µin/in·°F).
Electrical5
BaTiO3 is an electrical insulator with a dielectric strength of 5 kV/mm (127 V/mil) and a resistivity of 1×10¹⁰ Ω·m.
Chemical & Environmental2
Corrosion resistance is very good (72/100), worse than 53% of ceramic grades.
Sustainability4
Producing a kilogram of BaTiO3 takes about 60 MJ of energy and emits 5 kg of CO₂ — less than 76% of ceramic grades. Typical recycled content is 0%.
Manufacturability3
BaTiO3's machinability is not recommended (8/100, better than 69% of ceramic grades).
Common Calculations4
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the ceramic family
Yield strength against density for every ceramic grade FabDigit runs. BaTiO3 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with BaTiO3
Is BaTiO3 easy to machine?
Green or bisque machining is the practical route; fired bodies require diamond grinding, dicing and lapping with care for chipping.
Can BaTiO3 be welded?
Not weldable — joined by metallization (Ag, Ni/Cu, Ag-Pd) plus soldering, or by active-metal/glass brazing.
Can BaTiO3 be formed, bent or molded?
Formed as tape-cast layers, uniaxial/isostatic pressed discs or extruded shapes, then sintered 1250–1400 °C (lower with Cu-compatible reducing atmospheres and sintering aids).
BaTiO3 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Bastoichiometric BaTiO3, Ba/Ti typically 0.995–1.005 | 58 – 59.5 | 58.9 |
| Ti | 20 – 21 | 20.5 |
| dopants (Y, Nb, Mn, Mg, Ca, Zr, rare eargrade-specific: donor doping for PTC, Mg/rare-earth core-shell for X7R MLCC | 0 – 3 | 0.5 |
| O | balance |
What surface finishes work on BaTiO3?
Fired surfaces are lapped/polished for electrode adhesion; termination by screen-printed silver, sputtered Ni/Cr or electroless Ni plating.
How much does BaTiO3 cost?
BaTiO3 is a high-cost ceramic ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
BaTiO3 — frequently asked
What is BaTiO3 used for?
BaTiO3 is typically used for MLCC capacitor dielectrics, PTC thermistors, piezoelectric transducers and PTC heaters. In short: highest-permittivity capacitor dielectric; ferroelectric perovskite base material; PTC resistance switching.
What is the tensile strength of BaTiO3?
BaTiO3 has a typical tensile strength of 45 MPa (6.53 ksi) — weaker than 69% of ceramic grades. Strength varies by condition: see the 3 listed tempers.
Is BaTiO3 easy to machine?
Not especially — machinability is rated not recommended (8/100, better than 69% of ceramic grades). Green or bisque machining is the practical route; fired bodies require diamond grinding, dicing and lapping with care for chipping.
Can BaTiO3 be welded?
Not weldable — joined by metallization (Ag, Ni/Cu, Ag-Pd) plus soldering, or by active-metal/glass brazing.
What surface finishes work on BaTiO3?
Fired surfaces are lapped/polished for electrode adhesion; termination by screen-printed silver, sputtered Ni/Cr or electroless Ni plating.
Can BaTiO3 be formed, bent or molded?
Formed as tape-cast layers, uniaxial/isostatic pressed discs or extruded shapes, then sintered 1250–1400 °C (lower with Cu-compatible reducing atmospheres and sintering aids).
What is the maximum service temperature of BaTiO3?
BaTiO3 is rated for continuous use to about 1,000°C (1,832 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does BaTiO3 cost?
BaTiO3 is a high-cost ceramic ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- Engineered Materials Handbook Vol. 4: Ceramics and Glasses — ASM International (1991)
- Principles of Electronic Ceramics / Physical Ceramics — Wiley (1997)
- Barium titanate powders and MLCC dielectric grades — Sakai Chemical / Ferro / Nippon Chemical (2023)
- Landolt-Börnstein: Ferroelectrics and Related Substances (perovskite oxides) — Springer (2002)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.