Material Properties • NCE 40

PropertySymbolUnitsHard Material
NCE40
Dielectric Constant
(1 kHz)
KT31250
Dielectric Loss Factor
(1 kHz)
tanδe0.0025
Dielectric Loss Factor
(at 0.4V/mm)
tanδe0.014
Densityρkg/m37750
Curie PointTc°C318
Mechanical Quality FactorQm700
kp0.58
k330.70
Coupling Coefficientsk310.35
kt0.50
Piezoelectric Charged31Coul/N x 10-12 (or)-140
Displacement Coefficientd33m/V x 10-12320
Piezoelectric Voltage Coefficientg31-12
Voltage Coefficientg33V·m/N x 10-327.5
Np2160
Nt1980
Frequency ConstantsNtaHz·m
N33
N31
Poisson's RatioY
SE1113
SE3317
Elastic Constants Short CircuitSE12x 10-12m2/N-3.4
SE13-5.4
SE5534.5
SE6631.5