PZT Material Properties Table: d33, Qm, Curie Temperature, and Grade Selection
A PZT material properties table is useful only when the numbers are connected to the job the ceramic must do. Many teams compare lead zirconate titanate grades by scanning for the biggest d33 value, the highest coupling coefficient, or the widest Curie temperature. That shortcut can produce a reasonable first impression, but it does not produce a reliable material decision. A piezoelectric ceramic that looks strong in one column can be the wrong choice once the design includes duty cycle, heat, impedance matching, mounting stress, aging, and production repeatability.
This guide explains how to read the Yujie PZT material specifications table as an engineering decision tool. It is written for buyers and engineers who need to compare PZT grades before requesting samples, not for readers who only need a basic definition. If you need the starting point first, read what PZT material means and the broader soft vs hard PZT selection guide. Here the question is narrower: how should a team move from table values to a grade shortlist?
For this article, one site-wide mapping is explicit: P51 corresponds to PZT-5A, and P52 corresponds to PZT-5H. Other Yujie table grades are kept by their table names, such as P-33, P-43, P-44, and P-81, unless the project documentation confirms a specific external shorthand. That discipline matters because a material table should reduce ambiguity, not create a second naming problem.
Start With the Operating Role, Not the Highest Number
Engineering decision notes
PZT material and ceramic selection
Use this article when the choice is not just a shape, but a material tradeoff between sensitivity, loss, coupling, stability, and operating field. For "PZT Material Properties Table: d33, Qm, Curie Temperature, and Grade Selection", the practical value is in turning the topic into a measurable selection or sourcing decision.
Yujie manufactures PZT ceramics in-house, so material formulation, sintering, polarization, electrode process, and outgoing inspection can be tied to the final application.
Selection checks
- Separate sensing needs from high-power actuation needs before comparing d33 or coupling values.
- Check dielectric loss, Qm, Curie temperature, aging behavior, and operating field against the real duty cycle.
- Confirm whether the application needs standard PZT grades or a custom formulation and geometry.
Failure risks
- Choosing only the highest d33 can create heat, drift, or depolarization risk in power ultrasonics.
- A ceramic that performs well in free measurement can fail once bonded, clamped, or loaded.
- Material substitutions without batch testing can change capacitance, resonance, and system tuning.
RFQ details
- Is the part used for sensing, actuation, atomization, cleaning, welding, or measurement?
- What field strength, temperature, duty cycle, and mechanical load will the ceramic see?
- Which values must be controlled: d33, capacitance, resonance, impedance, Qm, or dimensional tolerance?
Relevant Yujie pages
- PZT Material Hub
Material grades and application tradeoffs
- Piezoelectric Ceramics
Shapes and ceramic manufacturing options
- Piezoelectric Disc Series
Disc ceramics for sensors, atomizers, and compact devices
Application FAQ
- Is the highest d33 always the best PZT choice?
- No. High d33 can be useful for sensitivity, but high-power ultrasonic systems often need lower loss, higher Qm, better thermal stability, and safer operation under field and stress.
- What makes PZT material selection different from catalog buying?
- The right PZT choice depends on geometry, load, drive field, duty cycle, temperature, and inspection targets. A catalog value is only useful when it is tied to the final assembly conditions.