bird PIEZO SYSTEMS, INC.
65 Tower Office Park    Woburn,    MA   01801   USA
Tel: 781-933-4850    Fax: 781-933-4743    email: sales@piezo.com

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PIEZOCERAMIC MATERIALS & PROPERTIES
PIEZOCERAMIC PROPERTIES    Values to be used as guidelines
PIEZOELECTRIC
Piezo Systems' Designation PSI-5A4E PSI-5H4E
Industry Designations Navy type II; Industry Type 5A Navy type VI; Industry Type 5H
Composition Lead Zirconate Titanate Lead Zirconate Titanate
Relative Dielectric Constant   (@ 1 KHz) KT3 1800 3800
Piezoelectric "d" coefficients relate the Strain Produced / Electric Field Applied   or   the Short Circuit Charge Density Produced / Stress Applied
d33 meter/Volt   or
Coulomb/Newton
390 x 10-12 650 x 10-12
d31 meter/Volt   or
Coulomb/Newton
-190 x 10-12 -320 x 10-12
Piezoelectric "g" coefficients relate the Open Circuit Electric Field Produced / Stress Applied   or   the Strain Produced / Charge Density Applied
g33 Volt-meter/Newton   or
meter2/Coulomb
24.0 x 10-3 19.0 x 10-3
g31 Volt-meter/Newton   or
meter2/Coulomb
-11.6 x 10-3 -9.5 x 10-3
Coupling Coefficient k33 0.72 0.75
k31 0.35 0.44
Polarizing Field Ep Volt/meter > 2 x 106 > 1.5 x 106
Initial Depolarizing Field Ec Volt/meter ~ 5 x 105 ~ 3 x 105
Coercive Field Ec Volt/meter ~ 1.2 x 106 ~ 8 x 105
MECHANICAL
Density δ Kg/meter3 7800 7800
Mechanical Q 80 32
Elastic Modulus YE3 Newton/meter2 5.2 x 1010 5.0 x 1010
YE1 Newton/meter2 6.6 x 1010 6.2 x 1010
THERMAL
Thermal Expansion Coefficient meter/meter °C ~ 4 x 10-6 ~ 3 x 10-6
Curie Temperature °C 350 230
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