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Physical and Piezoelectric Properties of APC Materials

Download Materials Chart as PDF

APC Material: 840 841 850 855 880
Navy Type Equivalent Navy I -- Navy II Navy VI Navy III
Relative Dielectric Constant
KT 1275 1375 1900 3300 1050
Dielectric Dissipation Factor (Dielectric Loss(%)*
tan δ 0.60 0.40 ≤ 2.00 ≤ 2.50 0.40
Curie Point (°C)**
Tc 325 320 360 200 310
Electromechanical Coupling Factor
kp 0.59 0.60 0.63 0.68 0.50
k33 0.72 0.68 0.72 0.76 0.62
k31 0.35 0.33 0.36 0.40 0.30
k15 0.70 0.67 0.68 0.66 0.55
Piezoelectric Charge Constant (10-12 C/N or 10-12 m/V)
d33 290 300 400 630 215
-d31 125 109 175 276 95
d15 480 450 590 720 330
Piezoelectric Voltage Constant (10-3 Vm/N or 10-3 m2/C)
g33 26.5 25.5 24.8 21.0 25.0
-g31 11.0 10.5 12.4 9.0 10.0
g15 38.0 35.0 36.0 27.0 28.0
Young's Modulus (1010 N/m2)
YE11 8.0 7.6 6.3 5.9 9.0
YE33 6.8 6.3 5.4 5.1 7.2
Frequency Constants (Hz*m or m/s)
NL (longitudinal) 1524 1700 1500 1390 1725
NT (thickness) 2005 2005 2040 2079 2110
NP (planar) 2130 2055 1980 1920 2120
Density (g/cm3)
ρ 7.6 7.6 7.6 7.6 7.6
Mechanical Quality Factor
Qm 500 1400 80 65 1000

 

APC Material: 842 844

851

881
Relative Dielectric Constant
KT 1375 1500

1950

1030
Dielectric Dissipation Factor (Dielectric Loss(%)
tan δ 0.45 0.40

1.50

0.40
Curie Point (°C)
Tc 325 320

360

310
Electromechanical Coupling Factor
kp 0.65 0.68

0.71

0.58

kt

0.48

0.48

0.51

0.46

Piezoelectric Charge Constant (10-12 C/N or 10-12 m/V)
d33 300 300

400

220
Piezoelectric Voltage Constant (10-3 Vm/N or 10-3 m2/C)
g33 26.3 24.5

24.8

26.7
Young's Modulus (1010 N/m2)
YE11 8.0 7.6

6.3

9.0
YE33 6.8 6.3

5.4

7.2
Frequency Constants (Hz*m or m/s)
NT (thickness) 2050 2050

2040

2050
NP (planar) 2230 2250

2080

2300
Density (g/cm3)
ρ 7.6 7.7

7.6

7.6
Mechanical Quality Factor
Qm 600 1500

80

1000

The values listed above pertain to test specimens. They are for reference purposes only and cannot be applied unconditionally to other shapes and dimensions. In practice, piezoelectric materials show varying values depending on their thickness, actual shape, surface finish, shaping process and post-processing.

Note: measurements made 24 hours after polarization.
Maximum voltage:5-7 VAC /mil for 850, 851, 855, Type VI VDC ~2X.
9-11 VAC /mil for 840, 841, 842, 844, 880, 881 VDC ~2X.
*At 1 kHz, low field.
**Maximum operating temperature = Curie point/2.

Standard Tolerances (Tighter tolerances avaliable on request)

- Capacitance: ±20%
- d33 Value: ±20%
- Frequency: ±5% (to ±0.5% on request)

 

For more information about APC International’s piezoelectric materials please consult the following:

Materials Overview
Choosing An APC Material
APC Materials for Sensing Applications
APC Materials for High Power Applications