PZT-8 HP
Other
HP = hot-pressed / high-density fine-grain PZT-8
Choose when near-zero porosity, higher strength and better high-drive stability are needed (deep-submergence sonar, very high stress prestressed stacks).
Values for the HP condition
Other PZT-8 tempers and conditions
PZT-8 is listed in 2 conditions; see the grade overview at PZT-8.
- HP
- SINT
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
HPThis page Hot-pressed / high-density fine-grain PZT-8 | Choose when near-zero porosity, higher strength and better high-drive stability are needed (deep-submergence sonar, very high stress prestressed stacks). | — | 40 | — | 380 HV | — |
SINTDefault Sintered | Standard commercial PZT-8 discs, rings and plates for Langevin stacks and power ultrasonic transducers. | — | — | — | 350 HV | — |
What is PZT-8 HP?
PZT-8 HP is PZT-8 in the HP condition — choose when near-zero porosity, higher strength and better high-drive stability are needed (deep-submergence sonar, very high stress prestressed stacks). PZT-8 HP has a tensile strength of 40 MPa (5.8 ksi), weaker than 70% of ceramic grades. The elastic modulus is 92 GPa (13.3 Msi). PZT-8 HP has a density of 7.75 g/cm³ (0.28 lb/in³), heavier than 75% of ceramic grades. SINT is the default condition FabDigit quotes; HP is available on request or by drawing note.
Limitations
- Poor heat conductor — 1.2 W/m·K (0.693 BTU/hr·ft·°F), worse than 97% of ceramic grades
- Limited service temperature — 150°C (302 °F), worse than 90% of ceramic grades
- Low stiffness — 92 GPa (13.3 Msi), worse than 75% of ceramic grades
- Heavy — 7.75 g/cm³ (0.28 lb/in³), worse than 75% of ceramic grades
PZT-8 HP properties
Typical room-temperature values for PZT-8 HP; 11 are specific to this condition. Other listed values are PZT-8 reference data and may not represent this condition. Bars are the position among ceramic grades.
Physical2
PZT-8 HP has a density of 7.75 g/cm³ (0.28 lb/in³), heavier than 75% of ceramic grades.
Mechanical10
PZT-8 HP has a tensile strength of 40 MPa (5.8 ksi), weaker than 70% of ceramic grades. The elastic modulus is 92 GPa (13.3 Msi).
Thermal5
PZT-8 HP is rated for continuous service to 150°C (302 °F). It conducts heat at 1.2 W/m·K (0.693 BTU/hr·ft·°F), worse than 97% of ceramic grades. Thermal expansion is 4 µm/m·K (2.22 µin/in·°F).
Electrical5
PZT-8 HP is an electrical insulator with a dielectric strength of 4 kV/mm (101.6 V/mil) and a resistivity of 1×10¹¹ Ω·m.
Chemical & Environmental2
Corrosion resistance is very good (70/100), worse than 59% of ceramic grades.
Sustainability3
Producing a kilogram of PZT-8 HP takes about 90 MJ of energy and emits 7 kg of CO₂ — less than 62% of ceramic grades. Typical recycled content is 5%.
Manufacturability3
PZT-8 HP's machinability is not recommended (6/100, better than 61% of ceramic grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with PZT-8 HP
Is PZT-8 easy to machine?
Green machining is preferred; fired parts require diamond grinding, lapping or ultrasonic/laser machining with copious coolant — keep grinding temperature and applied field low to avoid local depoling.
Can PZT-8 be welded?
Not weldable; electrodes are fired silver or sputtered Cr/Ni-Au, joined by low-temperature solder (<230 °C, short dwell) or conductive epoxy to avoid depoling.
Can PZT-8 be formed, bent or molded?
Dry/isostatic pressing or tape casting of calcined PZT powder, sintered ~1200–1300 °C in a PbO-rich atmosphere in sealed crucibles to control lead volatilisation.
What surface finishes work on PZT-8?
Lap to thickness and parallelism, electrode, then DC pole (~2–3 kV/mm in oil at 100–150 °C) and age at least 24 h before parameter measurement.
PZT-8 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 |
|---|---|---|
| Pbas PbO in Pb(Zr,Ti)O3 perovskite; slight PbO excess used to compensate volatilisation | 61 – 65 | 63.5 |
| ZrZr/Ti near morphotropic phase boundary, ~52/48 | 13 – 16 | 14.6 |
| Ti | 6 – 8.5 | 7.1 |
| Mnacceptor dopant giving domain pinning, high Qm and low tan δ | 0.1 – 0.6 | 0.3 |
| Feco-acceptor dopant typical of Navy III 'hard' formulations | 0 – 0.5 | 0.2 |
| Obalance as perovskite oxygen (~14.5 wt %) | balance | — |
PZT-8 HP — frequently asked
What is PZT-8 HP used for?
PZT-8 HP is typically used for high-power sonar arrays, ultrasonic welding horns and power transducers. In short: lowest loss PZT grade; highest continuous power handling; hardest PZT formulation.
What is the tensile strength of PZT-8 HP?
PZT-8 HP has a typical tensile strength of 40 MPa (5.8 ksi) — weaker than 70% of ceramic grades. Strength varies by condition: see the 2 listed tempers.
Is PZT-8 HP easy to machine?
Not especially — machinability is rated not recommended (6/100, better than 61% of ceramic grades). Green machining is preferred; fired parts require diamond grinding, lapping or ultrasonic/laser machining with copious coolant — keep grinding temperature and applied field low to avoid local depoling.
Can PZT-8 HP be welded?
Not weldable; electrodes are fired silver or sputtered Cr/Ni-Au, joined by low-temperature solder (<230 °C, short dwell) or conductive epoxy to avoid depoling.
What surface finishes work on PZT-8 HP?
Lap to thickness and parallelism, electrode, then DC pole (~2–3 kV/mm in oil at 100–150 °C) and age at least 24 h before parameter measurement.
Can PZT-8 HP be formed, bent or molded?
Dry/isostatic pressing or tape casting of calcined PZT powder, sintered ~1200–1300 °C in a PbO-rich atmosphere in sealed crucibles to control lead volatilisation.
What is the maximum service temperature of PZT-8 HP?
PZT-8 HP is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- IEEE Std 176 — Standard on Piezoelectricity — IEEE (1987)
- MIL-STD-1376B — Piezoelectric Ceramic Material and Measurements Guidelines for Sonar Transducers (Navy Type III) — US DoD (1995)
- APC 880 hard PZT material properties — APC International (2023)
- PZT-8 / Channel 5800 piezoelectric ceramic data — CTS / Channel Technologies (2022)
- Pz26 hard piezoceramic datasheet (PZT-8 equivalent) — CTS Ferroperm Piezoceramics (2023)
- Engineered Materials Handbook Vol. 4: Ceramics and Glasses — piezoelectric ceramics — ASM International (1991)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.