High Dielectric Piezo-Materials Technical Data (Typical Values) PEP Products Property Dielectric Constant (1 kHz) Dielectric Loss Factor (1 kHz) Dielectric Constant (1 kHz) Clamped Dielectric Constant Density Curie Point Mechanical Quality Factor Coupling Coefficients Piezoelectric Charge (Displacement Coefficient) Piezoelectric Voltage Coefficient (Voltage Coefficient) Frequency Constants Poisson’s Ratio Elastic Constants Short Circuit Elastic Constants Open Circuit Elastic Constants Short Circuit Elastic Constants Open Circuit 1-1 Symbol Units T K3 tanδe KT 1 KS 3 ρ Tc Qm kp k33 k31 kt k15 d31 d33 d15 g31 g33 g15 Nr Ntr Nta N33 N31 υ SE11 SE33 SE12 SE13 SE55 SD11 SD33 SD55 YE11 YE33 YD11 YD33 g/cm3 ºC Coul/N x 10-12 (or) m/V x 10-12 V·m/N x 10-3 Hz·m x 10-12m2/N x 10-12m2/N x 1010N/m2 x 1010N/m2 Material Type 3257HD 3265HD 5700 0.03 5900 2050 8.22 155 75 0.70 0.76 0.41 0.50 0.65 -360 730 850 -7.1 14.5 16.3 1940 2090 2350 1590 1430 0.32 14.7 18.1 -4.7 -7.3 38.1 12.2 7.6 22.0 6.8 5.5 8.1 13.2 6500 0.03 5400 2100 8.22 >135 75 0.66 0.73 0.40 0.49 0.68 -370 750 900 -6.4 13.0 18.8 2020 2095 2340 1550 1440 0.32 14.5 18 -4.7 -7.2 41.4 12.2 8.4 22.3 6.9 5.6 8.2 11.9 October 23, 2015